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learn Linux sed command 一、参考文档: 1. sed命令详解 http://qifuguang.me/2015/09/21/sed%E5%91%BD%E4%BB%A4%E8%AF%A6%E8%A7%A3/ 2. linux之sed用法 http://www.cnblogs.com/dong008259/archive/2011/12/07/2279897.html 3. Sed 的man手册参数详细解释(一) http://blog.csdn.net/imfinger/article/details/6071175 二、sed命令的使用规则是这样的: sed [option] ‘command‘ input_file 三、options: -n, --quiet, --silent suppress automatic printing of pattern space -e script, --expression=script add the script to the commands to be executed 如果命令行上只有一个指令的时候可以不用写-e,但是如果有多个指令的话一定要在每个指令的前面加-e选项。 -f script-file, --file=script-file add the contents of script-file to the commands to be executed 这里貌似是前面对应的-e对应的脚本 --follow-symlinks follow symlinks when processing in place -i[SUFFIX], --in-place[=SUFFIX] edit files in place (makes backup if extension supplied) -l N, --line-length=N specify the desired line-wrap length for the `l‘ command --posix disable all GNU extensions. -r, --regexp-extended use extended regular expressions in the script. -s, --separate consider files as separate rather than as a single continuous long stream. -u, --unbuffered load minimal amounts of data from the input files and flush the output buffers more often --help display this help and exit --version output version information and exit 四、command有以下几种: a \: append即追加字符串, a \的后面跟上字符串s(多行字符串可以用\n分隔),则会在当前选择的行的后面都加上字符串s; c \: 取代/替换字符串,c \后面跟上字符串s(多行字符串可以用\n分隔),则会将当前选中的行替换成字符串s; d : delete即删除,该命令会将当前选中的行删除; i \: insert即插入字符串,i \后面跟上字符串s(多行字符串可以用\n分隔),则会在当前选中的行的前面都插入字符串s; p : print即打印,该命令会打印当前选择的行到屏幕上; s : 替换,通常s命令的用法是这样的:1,2s/old/new/g,将old字符串替换成new字符串
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原文地址:http://www.cnblogs.com/zengjfgit/p/4970745.html