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NAME lftp - Sophisticated file transfer program SYNTAX lftp [-d] [-e cmd] [-p port] [-u user[,pass]] [site] lftp -f script_file lftp -c commands lftp --version lftp --help VERSION This man page documents lftp version 4.5.3. DESCRIPTION lftp is a file transfer program that allows sophisticated FTP, HTTP and other connections to
other hosts. If site is specified then lftp will connect to that site otherwise a connection
has to be established with the open command. lftp can handle several file access methods - FTP, FTPS, HTTP, HTTPS, HFTP, FISH, SFTP and
file (HTTPS and FTPS are only available when lftp is compiled with GNU TLS or OpenSSL
library). You can specify the method to use in `open URL‘ command, e.g. `open http://www.us.kernel.org/pub/linux‘. HFTP is ftp-over-http-proxy protocol. It can be used
automatically instead of FTP if ftp:proxy is set to `http://proxy[:port]‘. Fish is a protocol
working over an ssh connection to a unix account. SFtp is a protocol implemented in SSH2 as
SFTP subsystem.
Besides FTP-like protocols, lftp has support for BitTorrent protocol as `torrent‘ command.
Seeding is also supported.
Every operation in lftp is reliable, that is any non-fatal error is handled properly and the
operation is repeated. So if downloading breaks, it will be restarted from the point automat‐
ically. Even if FTP server does not support the REST command, lftp will try to retrieve the
file from the very beginning until the file is transferred completely. lftp has shell-like command syntax allowing you to launch several commands in parallel in
background (&). It is also possible to group commands within () and execute them in back‐
ground. All background jobs are executed in the same single process. You can bring a fore‐
ground job to background with ^Z (c-z) and back with command `wait‘ (or `fg‘ which is alias
to `wait‘). To list running jobs, use command `jobs‘. Some commands allow redirecting their
output (cat, ls, ...) to file or via pipe to external command. Commands can be executed con‐
ditionally based on termination status of previous command (&&, ||).
If you exit lftp before all jobs are not finished yet, lftp will move itself to nohup mode in
background. The same thing happens with a real modem hangup or when you close an xterm. lftp has built-in mirror which can download or update a whole directory tree. There is also
reverse mirror (mirror -R) which uploads or updates a directory tree on server. Mirror can
also synchronize directories between two remote servers, using FXP if available.
There is command `at‘ to launch a job at specified time in current context, command `queue‘
to queue commands for sequential execution for current server, and much more.
On startup, lftp executes /etc/lftp.conf and then ~/.lftprc and ~/.lftp/rc (or ~/.con‐ fig/lftp/rc if ~/.lftp does not exist). You can place aliases and `set‘ commands there. Some
people prefer to see full protocol debug, use `debug‘ to turn the debug on. Use `debug 3‘ to
see only greeting messages and error messages. lftp has a number of settable variables. You can use `set -a‘ to see all variables and their
values or `set -d‘ to see list of defaults. Variable names can be abbreviated and prefix can
be omitted unless the rest becomes ambiguous.
If lftp was compiled with OpenSSL (configure --with-openssl) it includes software developed
by the OpenSSL Project for use in the OpenSSL Toolkit. (http://www.openssl.org/) Commands ! shell command Launch shell or shell command.
!ls
To do a directory listing of the local host. alias [name [value]]
Define or undefine alias name. If value is omitted, the alias is undefined, else it takes the
value value. If no argument is given the current aliases are listed.
alias dir ls -lF
alias less zmore at time [ -- command ]
Wait until the given time and execute given (optional) command. See also at(1). attach [PID]
Attach the terminal to specified backgrounded lftp process. bookmark [subcommand]
The bookmark command controls bookmarks.
Site names can be used in the open command directly as-is or in any command that accepts
input URLs using the bm:site/path format.
add <name> [<loc>] add current place or given location to bookmarks and bind to given
name
del <name> remove bookmark with name
edit start editor on bookmarks file
import <type> import foreign bookmarks
list list bookmarks (default) cache [subcommand]
The cache command controls local memory cache. The following subcommands are recognized:
stat print cache status (default)
on|off turn on/off caching
flush flush cache
size lim set memory limit, -1 means unlimited
expire Nx set cache expiration time to N seconds (x=s) minutes (x=m) hours (x=h) or
days (x=d) cat files cat outputs the remote file(s) to stdout. (See also more, zcat and zmore) cd rdir
Change current remote directory. The previous remote directory is stored as `-‘. You can do
`cd -‘ to change the directory back. The previous directory for each site is also stored on
disk, so you can do `open site; cd -‘ even after lftp restart. chmod mode files Change permission mask on remote files. The mode must be an octal number. close [-a]
Close idle connections. By default only with the current server, use -a to close all idle
connections. cls [OPTS] files... `cls‘ tries to retrieve information about specified files or directories and outputs the
information according to format options. The difference between `ls‘ and `cls‘ is that `ls‘
requests the server to format file listing, and `cls‘ formats it itself, after retrieving all
the needed information. See `help cls‘ for options. command cmd args... execute given command ignoring aliases. debug [OPTS] level|off Switch debugging to level or turn it off. Options:
-o <file> redirect debug output to the file
-c show message context
-p show PID
-t show timestamps echo [-n] string Prints (echos) the given string to the display. eval [-f format ] args... without -f it executes given arguments as a command. With -f, arguments are transformed into
a new command. The format can contain plain text and placeholders $0...$9 and $@, correspond‐
ing to the arguments. exit [bg] [top] [parent] [kill] [code]
exit will exit from lftp or move to background if there are active jobs. If no job is active, code is passed to operating system as lftp‘s termination status. If code is omitted, the exit
code of last command is used.
`exit bg‘ forces moving to background when cmd:move-background is false. `exit top‘ makes
top level `shell‘ (internal lftp command executor) terminate. `exit parent‘ terminates the
parent shell when running a nested script. `exit kill‘ kills all numbered jobs before exit‐
ing. The options can be combined, e.g. `at 08:00 -- exit top kill &‘ kills all jobs and
makes lftp exit at specified time. fg Alias for `wait‘. find [OPTS] directory... List files in the directory (current directory by default) recursively. This can help with
servers lacking ls -R support. You can redirect output of this command. Options:
-d MD, --max-depth=MD specify maximum scan depth
-l, --list use long listing format ftpcopy Obsolete. Use one of the following instead:
get ftp://... -o ftp://...
get -O ftp://... file1 file2...
put ftp://...
mput ftp://.../*
mget -O ftp://... ftp://.../*
or other combinations to get FXP transfer (directly between two FTP servers). lftp would
fallback to plain copy (via client) if FXP transfer cannot be initiated or ftp:use-fxp is
false. get [-E] [-a] [-c] [-e] [-O base] rfile [-o lfile] ...
Retrieve the remote file rfile and store it as the local file lfile. If -o is omitted, the
file is stored to local file named as base name of rfile. You can get multiple files by spec‐
ifying multiple instances of rfile (and -o lfile). Does not expand wildcards, use mget for
that.
-c continue, reget
-E delete source files after successful transfer
-e delete target file before the transfer
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed
Examples:
get README
get README -o debian.README
get README README.mirrors
get README -o debian.README README.mirrors -o debian.mirrors
get README -o ftp://some.host.org/debian.README
get README -o ftp://some.host.org/debian-dir/ (end slash is important) get1 [OPTS] rfile Transfer a single file. Options:
-o <lfile> destination file name (default - basename of rfile)
-c continue, reget
-E delete source files after successful transfer
-a use ascii mode (binary is the default)
--source-region=<from-to> transfer specified region of source file
--target-position=<pos> position in target file to write data at glob [OPTS] [command] patterns Glob given patterns containing metacharacters and pass result to given command or return
appropriate exit code.
-f plain files (default)
-d directories
-a all types
--exist return zero exit code when the patterns expand to non-empty list
--not-exist return zero exit code when the patterns expand to an empty list
Examples:
glob echo *
glob --exist *.csv && echo "There are *.csv files" help [cmd]
Print help for cmd or if no cmd was specified print a list of available commands. jobs [-v] [job_no...]
List running jobs. -v means verbose, several -v can be specified. If job_no is specified,
only list a job with that number. kill all|job_no Delete specified job with job_no or all jobs. (For job_no see jobs) lcd ldir Change current local directory ldir. The previous local directory is stored as `-‘. You can
do `lcd -‘ to change the directory back. ln [-s] existing-file new-link Make a hard/symbolic link to an existing file. Option -s selects creation of a symbolic
link. local command Run specified command with local directory file:// session instead of remote session. Exam‐
ples:
local pwd
local ls
local mirror /dir1 /dir2 lpwd Print current working directory on local machine. ls params List remote files. You can redirect output of this command to file or via pipe to external
command. By default, ls output is cached, to see new listing use rels or cache flush. mget [-c] [-d] [-a] [-E] [-O base] files Gets selected files with expanded wildcards.
-c continue, reget.
-d create directories the same as file names and get the files into them
instead of current directory.
-E delete source files after successful transfer
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed mirror [OPTS] [source [target]]
Mirror specified source directory to local target directory. If the target directory ends
with a slash (except the root), the source base name is appended to target directory name.
Source and/or target can be URLs pointing to directories.
-c, --continue continue a mirror job if possible
-e, --delete delete files not present at remote site
--delete-first delete old files before transferring new ones
--depth-first descend into subdirectories before transferring files
-s, --allow-suid set suid/sgid bits according to remote site
--allow-chown try to set owner and group on files
--ascii use ascii mode transfers (implies --ignore-size)
--ignore-time ignore time when deciding whether to download
--ignore-size ignore size when deciding whether to download
--only-missing download only missing files
--only-existing download only files already existing at target
-n, --only-newer download only newer files (-c won‘t work)
--no-empty-dirs don‘t create empty directories (implies
--depth-first)
-r, --no-recursion don‘t go to subdirectories
--no-symlinks don‘t create symbolic links
-p, --no-perms don‘t set file permissions
--no-umask don‘t apply umask to file modes
-R, --reverse reverse mirror (put files)
-L, --dereference download symbolic links as files
-N, --newer-than=SPEC download only files newer than specified time
--older-than=SPEC download only files older than specified time
--size-range=RANGE download only files with size in specified range
-P, --parallel[=N] download N files in parallel
--use-pget[-n=N] use pget to transfer every single file
--on-change=CMD execute the command if anything has been changed
--loop repeat mirror until no changes found
-i RX, --include=RX include matching files
-x RX, --exclude=RX exclude matching files
-I GP, --include-glob=GP include matching files
-X GP, --exclude-glob=GP exclude matching files
-f FILE, --file=FILE mirror a single file or globbed group (e.g.
/path/to/*.txt)
-O DIR, --target-directory=DIR target base path or URL
-v, --verbose[=level] verbose operation
--log=FILE write lftp commands being executed to FILE
--script=FILE write lftp commands to FILE, but don‘t execute them
--just-print, --dry-run same as --script=-
--use-cache use cached directory listings
--Remove-source-files remove files after transfer (use with caution)
-a same as --allow-chown --allow-suid --no-umask
When using -R, the source directory is local and the target is remote. If the target direc‐
tory is omitted, base name of the source directory is used. If both directories are omitted,
current local and remote directories are used. If the target directory ends with a slash
(except the root directory) then base name of the source directory is appended. RX is an extended regular expression, just like in egrep(1). GP is a glob pattern, e.g. `*.zip‘.
Include and exclude options can be specified multiple times. It means that a file or direc‐
tory would be mirrored if it matches an include and does not match to excludes after the
include, or does not match anything and the first check is exclude. Directories are matched
with a slash appended.
Note that symbolic links are not created when uploading to remote server, because FTP proto‐
col cannot do it. To upload files the links refer to, use `mirror -RL‘ command (treat sym‐
bolic links as files).
For options --newer-than and --older-than you can either specify a file or time specification
like that used by at(1) command, e.g. `now-7days‘ or `week ago‘. If you specify a file, then
modification time of that file will be used.
Verbosity level can be selected using --verbose=level option or by several -v options, e.g.
-vvv. Levels are:
0 - no output (default)
1 - print actions
2 - +print not deleted file names (when -e is not specified)
3 - +print directory names which are mirrored
--only-newer turns off file size comparison and uploads/downloads only newer files even if
size is different. By default older files are transferred and replace newer ones.
You can mirror between two servers if you specify URLs instead of directories. FXP is auto‐
matically used for transfers between FTP servers, if possible.
Some FTP servers hide dot-files by default (e.g. .htaccess), and show them only when LIST
command is used with -a option. In such case try to use `set ftp:list-options -a‘. mkdir [-p] [-f] dir(s) Make remote directories. If -p is used, make all components of paths. The -f option makes
mkdir quiet and suppresses messages. module module [ args ]
Load given module using dlopen(3) function. If module name does not contain a slash, it is
searched in directories specified by module:path variable. Arguments are passed to mod‐
ule_init function. See README.modules for technical details. more files Same as `cat files | more‘. if PAGER is set, it is used as filter. (See also cat, zcat and zmore) mput [-c] [-d] [-a] [-E] [-O base] files Upload files with wildcard expansion. By default it uses the base name of local name as
remote one. This can be changed by `-d‘ option.
-c continue, reput
-d create directories the same as in file names and put the files into them
instead of current directory
-E delete source files after successful transfer (dangerous)
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed mrm file(s) Same as `glob rm‘. Removes specified file(s) with wildcard expansion. mv file1 file2 Rename file1 to file2. nlist [args]
List remote file names open [-e cmd] [-u user[,pass]] [-p port] host|url Select a FTP server. pget [OPTS] rfile [-o lfile]
Gets the specified file using several connections. This can speed up transfer, but loads the
net and server heavily impacting other users. Use only if you really have to transfer the
file ASAP. Options:
-c continue transfer. Requires lfile.lftp-pget-status file.
-n maxconn set maximum number of connections (default is taken from pget:default-n setting) put [-E] [-a] [-c] [-O base] lfile [-o rfile]
Upload lfile with remote name rfile. If -o omitted, the base name of lfile is used as remote
name. Does not expand wildcards, use mput for that.
-o <rfile> specifies remote file name (default - basename of lfile)
-c continue, reput. It requires permission to overwrite remote files
-E delete source files after successful transfer (dangerous)
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed pwd [-p]
Print current remote URL. Use `-p‘ option to show password in the URL. queue [-n num ] cmd Add the given command to queue for sequential execution. Each site has its own queue. `-n‘
adds the command before the given item in the queue. Don‘t try to queue `cd‘ or `lcd‘ com‐
mands, it may confuse lftp. Instead do the cd/lcd before `queue‘ command, and it will remem‐
ber the place in which the command is to be done. It is possible to queue up an already run‐
ning job by `queue wait <jobno>‘, but the job will continue execution even if it is not the
first in queue.
`queue stop‘ will stop the queue, it will not execute any new commands, but already running
jobs will continue to run. You can use `queue stop‘ to create an empty stopped queue. `queue
start‘ will resume queue execution. When you exit lftp, it will start all stopped queues
automatically.
`queue‘ with no arguments will either create a stopped queue or print queue status. queue --delete|-d [index or wildcard expression]
Delete one or more items from the queue. If no argument is given, the last entry in the queue
is deleted. queue --move|-m <index or wildcard expression> [index]
Move the given items before the given queue index, or to the end if no destination is given.
-q Be quiet.
-v Be verbose.
-Q Output in a format that can be used to re-queue. Useful with --delete.
Examples:
> get file &
[1] get file
> queue wait 1
> queue get another_file
> cd a_directory
> queue get yet_another_file
queue -d 3 Delete the third item in the queue.
queue -m 6 4 Move the sixth item in the queue before the fourth.
queue -m "get*zip" 1 Move all commands matching "get*zip" to the beginning of the
queue. (The order of the items is preserved.)
queue -d "get*zip" Delete all commands matching "get*zip". quote cmd For FTP - send the command uninterpreted. Use with caution - it can lead to unknown remote
state and thus will cause reconnect. You cannot be sure that any change of remote state
because of quoted command is solid - it can be reset by reconnect at any time.
For HTTP - specific to HTTP action. Syntax: ``quote <command> [<args>]‘‘. Command may be
``set-cookie‘‘ or ``post‘‘.
open http://www.site.net
quote set-cookie "variable=value; othervar=othervalue"
set http:post-content-type application/x-www-form-urlencoded
quote post /cgi-bin/script.cgi "var=value&othervar=othervalue" > local_file
For FISH - send the command uninterpreted. This can be used to execute arbitrary commands on
server. The command must not take input or print ### at new line beginning. If it does, the
protocol will become out of sync.
open fish://server
quote find -name \*.zip reget rfile [-o lfile]
Same as `get -c‘. rels [args]
Same as `ls‘, but ignores the cache. renlist [args]
Same as `nlist‘, but ignores the cache. repeat [OPTS] [[-d] delay] [command]
Repeat specified command with a delay between iterations. Default delay is one second,
default command is empty.
-c <count> maximum number of iterations
-d <delay> delay between iterations
--while-ok stop when command exits with non-zero code
--until-ok stop when command exits with zero code
--weak stop when lftp moves to background.
Examples:
repeat at tomorrow -- mirror
repeat 1d mirror reput lfile [-o rfile]
Same as `put -c‘. rm [-r] [-f] files Remove remote files. Does not expand wildcards, use mrm for that. -r is for recursive direc‐
tory remove. Be careful, if something goes wrong you can lose files. -f suppress error mes‐
sages. rmdir dir(s) Remove remote directories. scache [session]
List cached sessions or switch to specified session. set [var [val]]
Set variable to given value. If the value is omitted, unset the variable. Variable name has
format ``name/closure‘‘, where closure can specify exact application of the setting. See
below for details. If set is called with no variable then only altered settings are listed.
It can be changed by options:
-a list all settings, including default values
-d list only default values, not necessary current ones site site_cmd Execute site command site_cmd and output the result. You can redirect its output. sleep interval Sleep given time interval and exit. Interval is in seconds by default, but can be suffixed
with ‘m‘, ‘h‘, ‘d‘ for minutes, hours and days respectively. See also at. slot [name]
Select specified slot or list all slots allocated. A slot is a connection to a server, some‐
what like a virtual console. You can create multiple slots connected to different servers and
switch between them. You can also use slot:name as a pseudo-URL evaluating to that slot loca‐
tion.
Default readline binding allows quick switching between slots named 0-9 using Meta-0 - Meta-9
keys (often you can use Alt instead of Meta). source file source -e command Execute commands recorded in file file or returned by specified external command.
source ~/.lftp/rc
source -e echo help suspend Stop lftp process. Note that transfers will be also stopped until you continue the process
with shell‘s fg or bg commands. torrent [OPTS] torrent-files... Start BitTorrent process for the given torrent-files, which can be a local file, URL, magnet
link or plain info_hash written in hex. Local wildcards are expanded. Existing files are
first validated unless --force-valid option is given. Missing pieces are downloaded. Files
are stored in specified directory or current working directory by default. Seeding continues
until ratio reachs torrent:stop-on-ratio setting or time of torrent:seed-max-time outs.
Options:
-O <directory> specifies base directory where files should be placed
--force-valid skip file validation (if you are sure they are ok).
--dht-bootstrap=<node> bootstrap DHT by sending a query to specified node. E.g.
dht.transmissionbt.com:6881. This option should be used just
once to fill local node cache. user user [pass] user URL [pass]
Use specified info for remote login. If you specify an URL with user name, the entered pass‐
word will be cached so that future URL references can use it. version Print lftp version. wait [jobno] wait all Wait for specified job to terminate. If jobno is omitted, wait for last backgrounded job.
`wait all‘ waits for all jobs to terminate. zcat files Same as cat, but filter each file through zcat. (See also cat, more and zmore) zmore files Same as more, but filter each file through zcat. (See also cat, zcat and more) Settings On startup, lftp executes ~/.lftprc and ~/.lftp/rc (or ~/.config/lftp/rc if ~/.lftp does not
exist). You can place aliases and `set‘ commands there. Some people prefer to see full pro‐
tocol debug, use `debug‘ to turn the debug on.
There is also a system-wide startup file in /etc/lftp.conf. It can be in different direc‐
tory, see FILES section. lftp has the following settable variables (you can also use `set -a‘ to see all variables and
their values): bmk:save-passwords (boolean)
save plain text passwords in ~/.local/share/lftp/bookmarks or ~/.lftp/bookmarks on
`bookmark add‘ command. Off by default. cache:cache-empty-listings (boolean)
When false, empty listings are not cached. cache:enable (boolean)
When false, cache is disabled. cache:expire (time interval)
Positive cache entries expire in this time interval. cache:expire-negative (time interval)
Negative cache entries expire in this time interval. cache:size (number)
Maximum cache size. When exceeded, oldest cache entries will be removed from cache. cmd:at-exit (string)
the commands in string are executed before lftp exits or moves to background. cmd:at-exit-bg (string)
the commands in string are executed before backgrounded lftp exits. cmd:at-exit-fg (string)
the commands in string are executed before foreground lftp exits. cmd:at-background (string)
the commands in string are executed before lftp moves to background. cmd:at-terminate (string)
the commands in string are executed before lftp terminates (either backgrounded or
foreground). cmd:at-finish (string)
the commands in string are executed once when all jobs are done. cmd:at-queue-finish (string)
the commands in string are executed once when all jobs in a queue are done. cmd:cls-completion-default (string)
default cls options for displaying completion choices. For example, to make completion
listings show file sizes, set cmd:cls-completion-default to `-s‘. cmd:cls-default (string)
default cls command options. They can be overridden by explicitly given options. cmd:cls-exact-time (boolean)
when true, cls would try to get exact file modification time even if it means more
requests to the server. cmd:csh-history (boolean)
enables csh-like history expansion. cmd:default-protocol (string)
The value is used when `open‘ is used with just host name without protocol. Default is
`ftp‘. cmd:fail-exit (boolean)
if true, exit when an unconditional (without || and && at begin) command fails. cmd:interactive (tri-boolean)
when true, lftp acts interactively, handles terminal signals and outputs some extra
messages. Default is auto and depends on stdin being a terminal. cmd:long-running (seconds)
time of command execution, which is considered as `long‘ and a beep is done before
next prompt. 0 means off. cmd:ls-default (string)
default ls argument cmd:move-background (boolean)
when false, lftp refuses to go to background when exiting. To force it, use `exit bg‘. cmd:move-background-detach (boolean)
when true (default), lftp detaches itself from the control terminal when moving to
background, it is possible to attach back using `attach‘ command; when false, lftp
tricks the shell to move lftp to background process group and continues to run, then
fg shell command brings lftp back to foreground unless it has done all jobs and termi‐
nated. cmd:prompt (string)
The prompt. lftp recognizes the following backslash-escaped special characters that
are decoded as follows: \@ insert @ if current user is not default \a an ASCII bell character (07) \e an ASCII escape character (033) \h the hostname you are connected to \n newline \s the name of the client (lftp) \S current slot name \u the username of the user you are logged in as \U the URL of the remote site (e.g., ftp://g437.ub.gu.se/home/james/src/lftp) \v the version of lftp (e.g., 2.0.3) \w the current working directory at the remote site \W the base name of the current working directory at the remote site \nnn the character corresponding to the octal number nnn \\ a backslash \? skips next character if previous substitution was empty. \[ begin a sequence of non-printing characters, which could be used to embed a
terminal control sequence into the prompt \] end a sequence of non-printing characters cmd:parallel (number)
Number of jobs run in parallel in non-interactive mode. For example, this may be use‐
ful for scripts with multiple `get‘ commands. Note that setting this to a value
greater than 1 changes conditional execution behaviour, basically makes it inconsis‐
tent. cmd:queue-parallel (number)
Number of jobs run in parallel in a queue. cmd:remote-completion (boolean)
a boolean to control whether or not lftp uses remote completion. When true, Tab key
guesses if the word being completed should be a remote file name. Meta-Tab does remote
completion always. So you can force remote completion with Meta-Tab when cmd:remote- completion is false or when the guess is wrong. cmd:save-cwd-history (boolean)
when true, lftp saves last CWD of each site to ~/.local/share/lftp/cwd_history or ~/.lftp/cwd_history, allowing to do ``cd -‘‘ after lftp restart. Default is true. cmd:save-rl-history (boolean)
when true, lftp saves readline history to ~/.local/share/lftp/rl_history or ~/.lftp/rl_history on exit. Default is true. cmd:show-status (booleam)
when false, lftp does not show status line on terminal. Default is true. cmd:set-term-status (boolean)
when true, lftp updates terminal status if supported (e.g. xterm). The closure for
this setting is the terminal type from TERM environment variable. cmd:status-interval (timeinterval) the time interval between status updates. cmd:stifle-rl-history (number)
the number of lines to keep in readline history. cmd:term-status (string)
the format string to use to display terminal status. The closure for this setting is
the terminal type from TERM environment variable. Default uses ``tsl‘‘ and ``fsl‘‘
termcap values.
The following escapes are supported:
\a bell
\e escape
\n new line
\s "lftp"
\v lftp version
\T the status string cmd:time-style (string)
This setting is the default value for cls --time-style option. cmd:trace (boolean)
when true, lftp prints the commands it executes (like sh -x). cmd:verify-host (boolean)
if true, lftp resolves host name immediately in `open‘ command. It is also possible
to skip the check for a single `open‘ command if `&‘ is given, or if ^Z is pressed
during the check. cmd:verify-path (boolean)
if true, lftp checks the path given in `cd‘ command. It is also possible to skip the
check for a single `cd‘ command if `&‘ is given, or if ^Z is pressed during the check.
Examples:
set cmd:verify-path/hftp://* false
cd directory & cmd:verify-path-cached (boolean)
When false, `cd‘ to a directory known from cache as existent will succeed immediately.
Otherwise the verification will depend on cmd:verify-path setting. color:use-color (tri-boolean)
when true, cls command and completion output colored file listings according to
color:dir-colors setting. When set to auto, colors are used when output is a termi‐
nal. color:dir-colors (string)
file listing color description. By default the value of LS_COLORS environment variable
is used. See dircolors(1). dns:SRV-query (boolean)
query for SRV records and use them before gethostbyname. The SRV records are only used
if port is not explicitly specified. See link1(RFC2052) for details. dns:cache-enable (boolean)
enable DNS cache. If it is off, lftp resolves host name each time it reconnects. dns:cache-expire (time interval)
time to live for DNS cache entries. It has format <number><unit>+, e.g. 1d12h30m5s or
just 36h. To disable expiration, set it to `inf‘ or `never‘. dns:cache-size (number)
maximum number of DNS cache entries. dns:fatal-timeout (time interval)
limit the time for DNS queries. If DNS server is unavailable too long, lftp will fail
to resolve a given host name. Set to `never‘ to disable. dns:order (list of protocol names)
sets the order of DNS queries. Default is ``inet6 inet‘‘ which means first look up
address in inet6 family, then inet and use them in that order. To disable inet6
(AAAA) lookup, set this variable to ``inet‘‘. dns:use-fork (boolean)
if true, lftp will fork before resolving host address. Default is true. dns:max-retries (number)
If zero, there is no limit on the number of times lftp will try to lookup an address.
If > 0, lftp will try only this number of times to look up an address of each address
family in dns:order. file:charset (string)
local character set. It is set from current locale initially. fish:charset (string)
the character set used by fish server in requests, replies and file listings. Default
is empty which means the same as local. fish:connect-program (string)
the program to use for connecting to remote server. It should support `-l‘ option for
user name, `-p‘ for port number. Default is `ssh -a -x‘. You can set it to `rsh‘, for
example. fish:shell (string)
use specified shell on server side. Default is /bin/sh. On some systems, /bin/sh exits
when doing cd to a non-existent directory. lftp can handle that but it has to recon‐
nect. Set it to /bin/bash for such systems if bash is installed. ftp:acct (string)
Send this string in ACCT command after login. The result is ignored. The closure for
this setting has format user@host. ftp:anon-pass (string)
sets the password used for anonymous FTP access authentication. Default is "lftp@". ftp:anon-user (string)
sets the user name used for anonymous FTP access authentication. Default is "anony‐
mous". ftp:auto-sync-mode (regex)
if first server message matches this regex, turn on sync mode for that host. ftp:charset (string)
the character set used by FTP server in requests, replies and file listings. Default
is empty which means the same as local. This setting is only used when the server does
not support UTF8. ftp:client (string)
the name of FTP client to send with CLNT command, if supported by server. If it is
empty, then no CLNT command will be sent. ftp:bind-data-socket (boolean)
bind data socket to the interface of control connection (in passive mode). Default is
true, exception is the loopback interface. ftp:fix-pasv-address (boolean)
if true, lftp will try to correct address returned by server for PASV command in case
when server address is in public network and PASV returns an address from a private
network. In this case lftp would substitute server address instead of the one returned
by PASV command, port number would not be changed. Default is true. ftp:fxp-passive-source (boolean)
if true, lftp will try to set up source FTP server in passive mode first, otherwise
destination one. If first attempt fails, lftp tries to set them up the other way. If
the other disposition fails too, lftp falls back to plain copy. See also ftp:use-fxp. ftp:home (string)
Initial directory. Default is empty string which means auto. Set this to `/‘ if you
don‘t like the look of %2F in FTP URLs. The closure for this setting has format user@host. ftp:ignore-pasv-address (boolean)
If true, lftp uses control connection address instead of the one returned in PASV
reply for data connection. This can be useful for broken NATs. Default is false. ftp:list-empty-ok (boolean)
if set to false, empty lists from LIST command will be treated as incorrect, and
another method (NLST) will be used. ftp:list-options (string)
sets options which are always appended to LIST command. It can be useful to set this
to `-a‘ if server does not show dot (hidden) files by default. Default is empty. ftp:nop-interval (seconds)
delay between NOOP commands when downloading tail of a file. This is useful for FTP
servers which send "Transfer complete" message before flushing data transfer. In such
cases NOOP commands can prevent connection timeout. ftp:passive-mode (boolean)
sets passive FTP mode. This can be useful if you are behind a firewall or a dumb mas‐
querading router. In passive mode lftp uses PASV command, not the PORT command which
is used in active mode. In passive mode lftp itself makes the data connection to the
server; in active mode the server connects to lftp for data transfer. Passive mode is
the default. ftp:port-ipv4 (ipv4 address)
specifies an IPv4 address to send with PORT command. Default is empty which means to
send the address of local end of control connection. ftp:port-range (from-to)
allowed port range for active mode. Format is min-max, or `full‘ or `any‘ to indicate
any port. Default is `full‘. ftp:prefer-epsv (boolean)
use EPSV as preferred passive mode. Default is `false‘. ftp:proxy (URL)
specifies FTP proxy to use. To disable proxy set this to empty string. Note that it
is a FTP proxy which uses FTP protocol, not FTP over HTTP. Default value is taken from
environment variable ftp_proxy if it starts with ``ftp://‘‘. If your FTP proxy
requires authentication, specify user name and password in the URL. If ftp:proxy
starts with http:// then hftp protocol (FTP over HTTP proxy) is used instead of FTP
automatically. ftp:proxy-auth-type (string)
When set to ``joined‘‘, lftp sends ``user@proxy_user@ftp.example.org‘‘ as user name to
proxy, and ``password@proxy_password‘‘ as password.
When set to ``joined-acct‘‘, lftp sends ``user@ftp.example.org proxy_user‘‘ (with
space) as user name to proxy. The site password is sent as usual and the proxy pass‐
word is expected in the following ACCT command.
When set to ``open‘‘, lftp first sends proxy user and proxy password and then ``OPEN
ftp.example.org‘‘ followed by ``USER user‘‘. The site password is then sent as usual.
When set to ``user‘‘ (default), lftp first sends proxy user and proxy password and
then ``user@ftp.example.org‘‘ as user name. The site password is then sent as usual.
When set to ``proxy-user@host‘‘, lftp first sends ``USER proxy_user@ftp.example.org‘‘,
then proxy password. The site user and password are then sent as usual. ftp:rest-list (boolean)
allow usage of REST command before LIST command. This might be useful for large direc‐
tories, but some FTP servers silently ignore REST before LIST. ftp:rest-stor (boolean)
if false, lftp will not try to use REST before STOR. This can be useful for some buggy
servers which corrupt (fill with zeros) the file if REST followed by STOR is used. ftp:retry-530 (regex)
Retry on server reply 530 for PASS command if text matches this regular expression.
This setting should be useful to distinguish between overloaded server (temporary con‐
dition) and incorrect password (permanent condition). ftp:retry-530-anonymous (regex)
Additional regular expression for anonymous login, like ftp:retry-530. ftp:site-group (string)
Send this string in SITE GROUP command after login. The result is ignored. The clo‐
sure for this setting has format user@host. ftp:skey-allow (boolean)
allow sending skey/opie reply if server appears to support it. On by default. ftp:skey-force (boolean)
do not send plain text password over the network, use skey/opie instead. If skey/opie
is not available, assume failed login. Off by default. ftp:ssl-allow (boolean)
if true, try to negotiate SSL connection with FTP server for non-anonymous access.
Default is true. This and other SSL settings are only available if lftp was compiled
with an ssl/tls library. ftp:ssl-auth (string)
the argument for AUTH command, can be one of SSL, TLS, TLS-P, TLS-C. See link1(RFC4217) for
explanations. By default TLS or SSL will be used, depending on FEAT reply. ftp:ssl-data-use-keys (boolean)
if true, lftp loads ssl:key-file for protected data connection too. When false, it
does not, and the server can match data and control connections by session ID.
Default is true. ftp:ssl-force (boolean)
if true, refuse to send password in clear when server does not support SSL. Default
is false. ftp:ssl-protect-data (boolean)
if true, request SSL connection for data transfers. This is cpu-intensive but provides
privacy. Default is false. ftp:ssl-protect-fxp (boolean)
if true, request SSL connection for data transfer between two FTP servers in FXP mode.
CPSV or SSCN command will be used in that case. If SSL connection fails for some rea‐
son, lftp would try unprotected FXP transfer unless ftp:ssl-force is set for any of
the two servers. Default is false. ftp:ssl-protect-list (boolean)
if true, request SSL connection for file list transfers. Default is true. ftp:ssl-use-ccc (boolean)
if true, lftp would issue CCC command after logon, thus disable ssl protection layer
on control connection. ftp:stat-interval (time interval)
interval between STAT commands. Default is 1 second. ftp:strict-multiline (boolean)
when true, lftp strictly checks for multiline reply format (expects it to end with the
same code as it started with). When false, this check is relaxed. ftp:sync-mode (boolean)
if true, lftp will send one command at a time and wait for response. This might be
useful if you are using a buggy FTP server or router. When it is off, lftp sends a
pack of commands and waits for responses - it speeds up operation when round trip time
is significant. Unfortunately it does not work with all FTP servers and some routers
have troubles with it, so it is on by default. ftp:timezone (string)
Assume this timezone for time in listings returned by LIST command. This setting can
be GMT offset [+|-]HH[:MM[:SS]] or any valid TZ value (e.g. Europe/Moscow or
MSK-3MSD,M3.5.0,M10.5.0/3). The default is GMT. Set it to an empty value to assume
local timezone specified by environment variable TZ. ftp:trust-feat (string)
When true, assume that FEAT returned data are correct and don‘t use common protocol
extensions like SIZE, MDTM, REST if they are not listed. Default is false. ftp:use-abor (boolean)
if false, lftp does not send ABOR command but closes data connection immediately. ftp:use-allo (boolean)
when true (default), lftp sends ALLO command before uploading a file. ftp:use-feat (boolean)
when true (default), lftp uses FEAT command to determine extended features of ftp
server. ftp:use-fxp (boolean)
if true, lftp will try to set up direct connection between two ftp servers. ftp:use-hftp (boolean)
when ftp:proxy points to an http proxy, this setting selects hftp method (GET, HEAD)
when true, and CONNECT method when false. Default is true. ftp:use-ip-tos (boolean)
when true, lftp uses IPTOS_LOWDELAY for control connection and IPTOS_THROUGHPUT for
data connections. ftp:lang (boolean)
the language selected with LANG command, if supported as indicated by FEAT response.
Default is empty which means server default. ftp:use-mdtm (boolean)
when true (default), lftp uses MDTM command to determine file modification time. ftp:use-mdtm-overloaded (boolean)
when true, lftp uses two argument MDTM command to set file modification time on
uploaded files. Default is false. ftp:use-site-idle (boolean)
when true, lftp sends `SITE IDLE‘ command with net:idle argument. Default is false. ftp:use-site-utime (boolean)
when true, lftp sends 5-argument `SITE UTIME‘ command to set file modification time on
uploaded files. Default is true. ftp:use-site-utime2 (boolean)
when true, lftp sends 2-argument `SITE UTIME‘ command to set file modification time on
uploaded files. Default is true. If 5-argument `SITE UTIME‘ is also enabled, 2-argu‐
ment command is tried first. ftp:use-size (boolean)
when true (default), lftp uses SIZE command to determine file size. ftp:use-stat (boolean)
if true, lftp sends STAT command in FXP mode transfer to know how much data has been
transferred. See also ftp:stat-interval. Default is true. ftp:use-stat-for-list (boolean)
when true, lftp uses STAT instead of LIST command. By default `.‘ is used as STAT
argument. Using STAT, lftp avoids creating data connection for directory listing. Some
servers require special options for STAT, use ftp:list-options to specify them (e.g. -la). ftp:use-telnet-iac (boolean)
when true (default), lftp uses TELNET IAC command and follows TELNET protocol as spec‐
ified in link1(RFC959). When false, it does not follow TELNET protocol and thus does not dou‐
ble 255 (0xFF, 0377) character and does not prefix ABOR and STAT commands with TELNET
IP+SYNCH signal. ftp:use-tvfs (tri-boolean)
When set to auto, usage of TVFS feature depends on FEAT server reply. Otherwise this
setting tells whether use it or not. In short, if a server supports TVFS feature then
it uses unix-like paths. ftp:use-utf8 (boolean)
if true, lftp sends `OPTS UTF8 ON‘ to the server to activate UTF-8 encoding (if sup‐
ported). Disable it if the file names have a different encoding and the server has a
trouble with it. ftp:use-quit (boolean)
if true, lftp sends QUIT before disconnecting from ftp server. Default is true. ftp:verify-address (boolean)
verify that data connection comes from the network address of control connection peer.
This can possibly prevent data connection spoofing which can lead to data corruption.
Unfortunately, this can fail for certain ftp servers with several network interfaces,
when they do not set outgoing address on data socket, so it is disabled by default. ftp:verify-port (boolean)
verify that data connection has port 20 (ftp-data) on its remote end. This can possi‐
bly prevent data connection spoofing by users of remote host. Unfortunately, too many
windows and even unix ftp servers forget to set proper port on data connection, thus
this check is off by default. ftp:web-mode (boolean)
disconnect after closing data connection. This can be useful for totally broken ftp
servers. Default is false. ftps:initial-prot (string)
specifies initial PROT setting for FTPS connections. Should be one of: C, S, E, P, or
empty. Default is empty which means unknown, so that lftp will use PROT command uncon‐
ditionally. If PROT command turns out to be unsupported, then Clear mode would be
assumed. hftp:cache (boolean)
allow server/proxy side caching for ftp-over-http protocol. hftp:cache-control (string)
specify corresponding HTTP request header. hftp:decode (boolean)
when true, lftp automatically decodes the entity in hftp protocol when Content-Encod‐
ing header value matches deflate, gzip, compress, x-gzip or x-compress. hftp:proxy (URL)
specifies HTTP proxy for FTP-over-HTTP protocol (hftp). The protocol hftp cannot work
without a HTTP proxy, obviously. Default value is taken from environment variable ftp_proxy if it starts with ``http://‘‘, otherwise from environment variable http_proxy. If your FTP proxy requires authentication, specify user name and password
in the URL. hftp:use-allprop (boolean)
if true, lftp will send `<allprop/>‘ request body in `PROPFIND‘ requests, otherwise it
will send an empty request body. hftp:use-authorization (boolean)
if set to off, lftp will send password as part of URL to the proxy. This may be
required for some proxies (e.g. M-soft). Default is on, and lftp will send password as
part of Authorization header. hftp:use-head (boolean)
if set to off, lftp will try to use `GET‘ instead of `HEAD‘ for hftp protocol. While
this is slower, it may allow lftp to work with some proxies which don‘t understand or
mishandle ``HEAD ftp://‘‘ requests. hftp:use-mkcol (boolean)
if set to off, lftp will try to use `PUT‘ instead of `MKCOL‘ to create directories
with hftp protocol. Default is off. hftp:use-propfind (boolean)
if set to off, lftp will not try to use `PROPFIND‘ to get directory contents with hftp
protocol and use `GET‘ instead. Default is off. hftp:use-type (boolean)
If set to off, lftp won‘t try to append `;type=‘ to URLs passed to proxy. Some broken
proxies don‘t handle it correctly. Default is on. http:accept, http:accept-charset, http:accept-encoding, http:accept-language (string)
specify corresponding HTTP request headers. http:authorization (string)
the authorization to use by default, when no user is specified. The format is
``user:password‘‘. Default is empty which means no authorization. http:cache (boolean)
allow server/proxy side caching. http:cache-control (string)
specify corresponding HTTP request header. http:cookie (string)
send this cookie to server. A closure is useful here:
set cookie/www.somehost.com "param=value" http:decode (boolean)
when true, lftp automatically decodes the entity when Content-Encoding header value
matches deflate, gzip, compress, x-gzip or x-compress. http:post-content-type (string)
specifies value of Content-Type HTTP request header for POST method. Default is
``application/x-www-form-urlencoded‘‘. http:proxy (URL)
specifies HTTP proxy. It is used when lftp works over HTTP protocol. Default value is
taken from environment variable http_proxy. If your proxy requires authentication,
specify user name and password in the URL. http:put-method (PUT or POST)
specifies which HTTP method to use on put. http:put-content-type (string)
specifies value of Content-Type HTTP request header for PUT method. http:referer (string)
specifies value for Referer HTTP request header. Single dot `.‘ expands to current
directory URL. Default is `.‘. Set to empty string to disable Referer header. http:set-cookies (boolean)
if true, lftp modifies http:cookie variables when Set-Cookie header is received. http:use-allprop (boolean)
if true, lftp will send `<allprop/>‘ request body in `PROPFIND‘ requests, otherwise it
will send an empty request body. http:use-mkcol (boolean)
if set to off, lftp will try to use `PUT‘ instead of `MKCOL‘ to create directories
with HTTP protocol. Default is on. http:use-propfind (boolean)
if set to off, lftp will not try to use `PROPFIND‘ to get directory contents with HTTP
protocol and use `GET‘ instead. Default is on. http:user-agent (string)
the string lftp sends in User-Agent header of HTTP request. https:proxy (string)
specifies https proxy. Default value is taken from environment variable https_proxy. mirror:dereference (boolean)
when true, mirror will dereference symbolic links by default. You can override it by
--no-dereference option. Default if false. mirror:exclude-regex (regex)
specifies default exclusion pattern. You can override it by --include option. mirror:include-regex (regex)
specifies default inclusion pattern. It is used just after mirror:exclude-regex is
applied. It is never used if mirror:exclude-regex is empty. mirror:no-empty-dirs (boolean)
when true, mirror doesn‘t create empty directories (like --no-empty-dirs option). mirror:order (list of patterns)
specifies order of file transfers. E.g. setting this to "*.sfv *.sum" makes mirror to
transfer files matching *.sfv first, then ones matching *.sum and then all other
files. To process directories after other files, add "*/" to end of pattern list. mirror:parallel-directories (boolean)
if true, mirror will start processing of several directories in parallel when it is in
parallel mode. Otherwise, it will transfer files from a single directory before moving
to other directories. mirror:parallel-transfer-count (number)
specifies number of parallel transfers mirror is allowed to start. Default is 1. You
can override it with --parallel option. mirror:set-permissions (boolean)
When set to off, mirror won‘t try to copy file and directory permissions. You can
override it by --perms option. Default is on. mirror:skip-noaccess (boolean)
when true, mirror does not try to download files which are obviously inaccessible by
the permission mask. Default is false. mirror:use-pget-n (number)
specifies -n option for pget command used to transfer every single file under mirror.
Default is 1 which disables pget. module:path (string)
colon separated list of directories to look for modules. Can be initialized by envi‐
ronment variable LFTP_MODULE_PATH. Default is `PKGLIBDIR/VERSION:PKGLIBDIR‘. net:connection-limit (number)
maximum number of concurrent connections to the same site. 0 means unlimited. net:connection-takeover (boolean)
if true, foreground connections have priority over background ones and can interrupt
background transfers to complete a foreground operation. net:idle (time interval)
disconnect from server after this idle time. Default is 3 minutes. net:limit-rate (bytes per second)
limit transfer rate on data connection. 0 means unlimited. You can specify two numbers
separated by colon to limit download and upload rate separately. Suffixes are sup‐
ported, e.g. 100K means 102400. net:limit-max (bytes)
limit accumulating of unused limit-rate. 0 means twice of limit-rate. net:limit-total-rate (bytes per second)
limit transfer rate of all connections in sum. 0 means unlimited. You can specify two
numbers separated by colon to limit download and upload rate separately. Note that
sockets have receive buffers on them, this can lead to network link load higher than
this rate limit just after transfer beginning. You can try to set net:socket-buffer to
relatively small value to avoid this. net:limit-total-max (bytes)
limit accumulating of unused limit-total-rate. 0 means twice of limit-total-rate. net:max-retries (number)
the maximum number of sequential tries of an operation without success. 0 means
unlimited. 1 means no retries. net:no-proxy (string)
contains comma separated list of domains for which proxy should not be used. Default
is taken from environment variable no_proxy. net:persist-retries (number)
ignore this number of hard errors. Useful to login to buggy FTP servers which reply
5xx when there is too many users. net:reconnect-interval-base (seconds)
sets the base minimal time between reconnects. Actual interval depends on net:recon‐
nect-interval-multiplier and number of attempts to perform an operation. net:reconnect-interval-max (seconds)
sets maximum reconnect interval. When current interval after multiplication by
net:reconnect-interval-multiplier reaches this value (or exceeds it), it is reset back
to net:reconnect-interval-base. net:reconnect-interval-multiplier (real number)
sets multiplier by which base interval is multiplied each time new attempt to perform
an operation fails. When the interval reaches maximum, it is reset to base value. See
net:reconnect-interval-base and net:reconnect-interval-max. net:socket-bind-ipv4 (ipv4 address)
bind all IPv4 sockets to specified address. This can be useful to select a specific
network interface to use. Default is empty which means not to bind IPv4 sockets, oper‐
ating system will choose an address automatically using routing table. net:socket-bind-ipv6 (ipv6 address)
the same for IPv6 sockets. net:socket-buffer (bytes)
use given size for SO_SNDBUF and SO_RCVBUF socket options. 0 means system default. net:socket-maxseg (bytes)
use given size for TCP_MAXSEG socket option. Not all operating systems support this
option, but Linux does. net:timeout (time interval)
sets the network protocol timeout. pget:default-n (number)
default number of chunks to split the file to in pget. pget:min-chunk-size (number)
minimal chunk size to split the file to. pget:save-status (time interval)
save pget transfer status this often. Set to `never‘ to disable saving of the status
file. The status is saved to a file with suffix .lftp-pget-status. sftp:charset (string)
the character set used by SFTP server in file names and file listings. Default is
empty which means the same as local. This setting is only used for SFTP protocol ver‐
sion prior to 4. Version 4 and later always use UTF-8. sftp:connect-program (string)
the program to use for connecting to remote server. It should support `-l‘ option for
user name, `-p‘ for port number. Default is `ssh -a -x‘. You can set it to `rsh‘, for
example. sftp:max-packets-in-flight (number)
The maximum number of unreplied packets in flight. If round trip time is significant,
you should increase this and size-read/size-write. Default is 16. sftp:protocol-version (number)
The protocol number to negotiate. Default is 4. The actual protocol version used
depends on server. sftp:server-program (string)
The server program implementing SFTP protocol. If it does not contain a slash `/‘, it
is considered a ssh2 subsystem and -s option is used when starting connect-program.
Default is `sftp‘. You can use rsh as transport level protocol like this:
set sftp:connect-program rsh
set sftp:server-program /usr/libexec/openssh/sftp-server
Similarly you can run SFTP over SSH1. sftp:size-read (number)
Block size for reading. Default is 0x8000. sftp:size-write (number)
Block size for writing. Default is 0x8000. ssl:ca-file (path to file)
use specified file as Certificate Authority certificate. ssl:ca-path (path to directory)
use specified directory as Certificate Authority certificate repository (OpenSSL
only). ssl:check-hostname (boolean)
when true, lftp checks if the host name used to connect to the server corresponds to
the host name in its certificate. ssl:crl-file (path to file)
use specified file as Certificate Revocation List certificate. ssl:crl-path (path to directory)
use specified directory as Certificate Revocation List certificate repository (OpenSSL
only). ssl:key-file (path to file)
use specified file as your private key. ssl:cert-file (path to file)
use specified file as your certificate. ssl:use-sni (boolean)
when true, use Server Name Indication (SNI) TLS extension. ssl:verify-certificate (boolean)
if set to yes, then verify server‘s certificate to be signed by a known Certificate
Authority and not be on Certificate Revocation List. torrent:ip (ipv4 address)
IP address to send to the tracker. Specify it if you are using an HTTP proxy. torrent:ipv6 (ipv6 address)
IPv6 address to send to the tracker. By default, first found global unicast address is
used. torrent:max-peers (number)
maximum number of peers for a torrent. Least used peers are removed to maintain this
limit. torrent:port-range (from-to)
port range to accept connections on. A single port is selected when a torrent starts. torrent:retracker (URL)
explicit retracker URL, e.g. `http://retracker.local/announce‘. torrent:save-metadata (boolean)
when true, lftp saves metadata of each torrent it works with to ~/.local/share/lftp/torrent/md or ~/.lftp/torrent/md directory and loads it from there
if necessary. torrent:seed-max-time (time interval)
maximum seed time. After this period of time a complete torrent shuts down indepen‐
dently of ratio. It can be set to infinity if needed. torrent:seed-min-peers (number)
minimum number of peers when the torrent is complete. If there are less, new peers are
actively searched for. torrent:stop-on-ratio (real number)
torrent stops when it‘s complete and ratio reached this number. torrent:use-dht (boolean)
when true, DHT is used. xfer:auto-rename(boolean)
suggested filenames provided by the server are used if user explicitly sets this
option to `on‘. As this could be security risk, default is off. xfer:clobber (boolean)
if this setting is off, get commands will not overwrite existing files and generate an
error instead. xfer:destination-directory (path or URL to directory)
This setting is used as default -O option for get and mget commands. Default is
empty, which means current directory (no -O option). xfer:disk-full-fatal (boolean)
when true, lftp aborts a transfer if it cannot write target file because of full disk
or quota; when false, lftp waits for disk space to be freed. xfer:eta-period (seconds)
the period over which weighted average rate is calculated to produce ETA. xfer:eta-terse (boolean)
show terse ETA (only high order parts). Default is true. xfer:log (boolean)
when true, lftp logs transfers to a file from xfer:log-file setting. xfer:log-file (path to file)
the file to log transfers to. Default is ~/.local/share/lftp/transfer_log or ~/.lftp/transfer_log. xfer:make-backup (boolean)
when true, lftp renames pre-existing file adding ``~‘‘ suffix instead of overwriting
it. xfer:max-log-size (number)
maximum size of the transfer log file. When the size is reached, the file is renamed
and started anew. xfer:max-redirections (number)
maximum number of redirections. This can be useful for downloading over HTTP. 0 pro‐
hibits redirections. xfer:rate-period (seconds)
the period over which weighted average rate is calculated to be shown. xfer:verify (boolean)
when true, verify-command is launched after successful transfer to validate file
integrity. Zero exit code of that command should indicate correctness of the file. xfer:verify-command (string)
the command to validate file integrity. The only argument is the path to the file.
The name of a variable can be abbreviated unless it becomes ambiguous. The prefix before `:‘
can be omitted too. You can set one variable several times for different closures, and thus
you can get a particular settings for particular state. The closure is to be specified after
variable name separated with slash `/‘.
The closure for `dns:‘, `net:‘, `ftp:‘, `http:‘, `hftp:‘ domain variables is currently just
the host name as you specify it in the `open‘ command (with some exceptions where closure is
meaningless, e.g. dns:cache-size). For some `cmd:‘ domain variables the closure is current
URL without path. For other variables it is not currently used. See examples in the sample lftp.conf.
Certain commands and settings take a time interval parameter. It has the format Nx[Nx...],
where N is time amount (floating point) and x is time unit: d - days, h - hours, m - minutes,
s - seconds. Default unit is second. E.g. 5h30m or 5.5h. Also the interval can be `infin‐
ity‘, `inf‘, `never‘, `forever‘ - it means infinite interval. E.g. `sleep forever‘ or `set
dns:cache-expire never‘.
Boolean settings can be one of (true, on, yes, 1, +) for a True value or one of (false, off,
no, 0, -) for a False value.
Tri-boolean settings have either a boolean value or `auto‘.
Integer settings can have a suffix: k - kibi, m - mebi, g - gigi, etc. They can also have a
prefix: 0 - octal, 0x - hexadecimal. FTP asynchronous mode (pipelining) Lftp can speed up FTP operations by sending several commands at once and then checking all
the responses. See ftp:sync-mode variable. Sometimes this does not work, thus synchronous
mode is the default. You can try to turn synchronous mode off and see if it works for you. It
is known that some network software dealing with address translation works incorrectly in the
case of several FTP commands in one network packet. RFC959 says: ``The user-process sending another command before the completion reply would be
in violation of protocol; but server-FTP processes should queue any commands that arrive
while a preceding command is in progress‘‘. Also, RFC1123 says: ``Implementors MUST NOT
assume any correspondence between READ boundaries on the control connection and the Telnet
EOL sequences (CR LF).‘‘ and ``a single READ from the control connection may include more
than one FTP command‘‘.
So it must be safe to send several commands at once, which speeds up operation a lot and
seems to work with all Unix and VMS based ftp servers. Unfortunately, windows based servers
often cannot handle several commands in one packet, and so cannot some broken routers. OPTIONS -d Switch on debugging mode. -e commands Execute given commands and don‘t exit. -p port Use the given port to connect. -u user[,pass]
Use the given username and password to connect. Remember to quote the password prop‐
erly in the shell. Also note that it is not secure to specify the password on command
line, use ~/.netrc file. Alternatively you can use ssh-based protocols with autho‐
rized keys, so you don‘t have to enter a password. -f script_file Execute commands in the file and exit. This option must be used alone without other
arguments. -c commands Execute the given commands and exit. Commands can be separated with a semicolon, `&&‘
or `||‘. Remember to quote the commands argument properly in the shell. This option
must be used alone without other arguments. ENVIRONMENT VARIABLES The following environment variables are processed by lftp: HOME Used for (local) tilde (`~‘) expansion SHELL Used by the ! command to determine the shell to run. PAGER This should be the name of the pager to use. It‘s used by the more and zmore com‐
mands. http_proxy, https_proxy Used to set initial http:proxy, hftp:proxy and https:proxy variables. ftp_proxy Used to set initial ftp:proxy or hftp:proxy variables, depending on URL protocol used
in this environment variable. no_proxy Used to set initial net:no-proxy variable. LFTP_MODULE_PATH Used to set initial module:path variable. LFTP_HOME Used to locate the directory that stores user-specific configuration files. If unset, ~/.lftp will be used. Please note that if this directory does not exist, then XDG
directories will be used. LS_COLORS used to set initial color:dir-colors variable. XDG_CONFIG_DIR, XDG_DATA_DIR, XDG_CACHE_DIR Used to locate the directories for user-specific files when ~/.lftp (or $LFTP_HOME directory) does not exist. Defaults are ~/.config, ~/.local/share and ~/.cache respec‐
tively. The suffix /lftp is appended to make the full path to the directories. FILES /etc/lftp.conf system-wide startup file. Actual location depends on --sysconfdir configure option. It
is /etc when prefix is /usr, /usr/local/etc by default. ~/.config/lftp/rc or ~/.lftp/rc, ~/.lftprc These files are executed on lftp startup after /etc/lftp.conf. ~/.local/share/lftp/log or ~/.lftp/log The file things are logged to when lftp moves into the background in nohup mode. ~/.local/share/lftp/transfer_log or ~/.lftp/transfer_log The file transfers are logged to when xfer:log setting is set to `yes‘. The location
can be changed by xfer:log-file setting. ~/.local/share/lftp/bookmarks or ~/.lftp/bookmarks The file is used to store lftp‘s bookmarks. See the bookmark command. ~/.local/share/lftp/cwd_history or ~/.lftp/cwd_history The file is used to store last working directories for each site visited. ~/.local/share/lftp/bg/ or ~/.lftp/bg/ The directory is used to store named sockets for backgrounded lftp processes. ~/.cache/lftp/DHT/ or ~/.lftp/DHT/" The directory is used to store DHT id and nodes cache for IPv4 and IPv6. File name
suffix is the host name. ~/.local/share/lftp/torrent/md/ or ~/.lftp/torrent/md/" The directory is used to store torrent metadata. It is especially useful for magnet
links, cached metadata can be loaded from the directory. It can also serve as torrent
history, file names are the info_hash of torrents. ~/.netrc The file is consulted to get default login and password to FTP server. Passwords are
also searched here if an URL with user name but with no password is used. SEE ALSO ftpd(8), ftp(1) RFC854 (telnet), RFC959 (ftp), RFC1123, RFC1945 (http/1.0), RFC2052 (SRV RR), RFC2228 (ftp
security extensions), RFC2389 (ftp FEAT), RFC2428 (ftp/ipv6), RFC2518 (WebDAV), RFC2616 (http/1.1), RFC2617 (http/1.1 authentication), RFC2640 (ftp i18n), RFC4217 (ftp over ssl), BEP0003 (BitTorrent Protocol), BEP0005 (DHT Protocol), BEP0006 (Fast Extension), BEP0007 (IPv6 Tracker Extension), BEP0009 (Extension for Peers to Send Metadata Files), BEP0010 (Extension Protocol), BEP0012 (Multitracker Metadata Extension), BEP0023 (Tracker Returns
Compact Peer Lists), BEP0032 (DHT Extensions for IPv6). http://www.ietf.org/internet-drafts/draft-ietf-ftpext-mlst-16.txt (ftp extensions over RFC959), http://www.ietf.org/internet-drafts/draft-ietf-secsh-filexfer-10.txt (sftp). http://wiki.theory.org/BitTorrentSpecification http://www.bittornado.com/docs/multitracker-spec.txt http://www.rasterbar.com/products/libtorrent/dht_sec.html (DHT security extension) http://xbtt.sourceforge.net/udp_tracker_protocol.html (UDP tracker) AUTHOR Alexander V. Lukyanov
lav@yars.free.net ACKNOWLEDGMENTS This manual page was originally written by Christoph Lameter <clameter@debian.org>, for the
Debian GNU/Linux system. The page was improved and updated later by Nicolas Lichtmaier
<nick@Feedback.com.ar>, James Troup <J.J.Troup@comp.brad.ac.uk> and Alexander V. Lukyanov
<lav@yars.free.net>.
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原文地址：http://my.oschina.net/zhangxu0512/blog/297189
