标签：linux sed
linux sed用法
sed用法
sed 是一种在线编辑器，它一次处理一行内容。处理时，把当前处理的行存储在临时缓冲区中，称为“模式空间”（pattern space）
接着用sed命令处理缓冲区中的内容，处理完成后，把缓冲区的内容送往屏幕。接着处理下一行，这样不断重复，直到文件末尾。
文件内容并没有 改变，除非你使用重定向存储输出。
Sed主要用来自动编辑一个或多个文件；简化对文件的反复操作；编写转换程序等。
1、以行为单位的新增/删除
(1)将 /etc/passwd 的内容列出及第 2~5 行删除，然后保存在passwd_sed.txt
cp /etc/passwd /root/shell/
[root@s80sit shell]# cat passwd root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin gopher:x:13:30:gopher:/var/gopher:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:99:99:Nobody:/:/sbin/nologin dbus:x:81:81:System message bus:/:/sbin/nologin usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin rpc:x:32:32:Rpcbind Daemon:/var/cache/rpcbind:/sbin/nologin oprofile:x:16:16:Special user account to be used by OProfile:/home/oprofile:/sbin/nologin vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin rtkit:x:499:497:RealtimeKit:/proc:/sbin/nologin abrt:x:173:173::/etc/abrt:/sbin/nologin hsqldb:x:96:96::/var/lib/hsqldb:/sbin/nologin avahi-autoipd:x:170:170:Avahi IPv4LL Stack:/var/lib/avahi-autoipd:/sbin/nologin apache:x:48:48:Apache:/var/www:/sbin/nologin saslauth:x:498:76:"Saslauthd user":/var/empty/saslauth:/sbin/nologin postfix:x:89:89::/var/spool/postfix:/sbin/nologin rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin haldaemon:x:68:68:HAL daemon:/:/sbin/nologin gdm:x:42:42::/var/lib/gdm:/sbin/nologin ntp:x:38:38::/etc/ntp:/sbin/nologin pulse:x:497:495:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin webalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologin sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin tcpdump:x:72:72::/:/sbin/nologin userlog:x:816:816::/home/userlog:/bin/bash tomcat:x:815:815::/home/tomcat:/bin/bash manager:x:817:817::/home/manager:/bin/bash cloudera-scm:x:496:492:Cloudera Manager:/var/lib/cloudera-scm-server:/sbin/nologin flume:x:495:490:Flume:/var/lib/flume-ng:/bin/false hdfs:x:494:489:Hadoop HDFS:/var/lib/hadoop-hdfs:/bin/bash solr:x:493:488:Solr:/var/lib/solr:/sbin/nologin zookeeper:x:492:487:ZooKeeper:/var/lib/zookeeper:/bin/false llama:x:491:486:Llama:/var/lib/llama:/bin/bash httpfs:x:490:485:Hadoop HTTPFS:/var/lib/hadoop-httpfs:/bin/bash mapred:x:489:484:Hadoop MapReduce:/var/lib/hadoop-mapreduce:/bin/bash sqoop:x:488:483:Sqoop:/var/lib/sqoop:/bin/false yarn:x:487:482:Hadoop Yarn:/var/lib/hadoop-yarn:/bin/bash kms:x:486:481:Hadoop KMS:/var/lib/hadoop-kms:/bin/bash hive:x:485:480:Hive:/var/lib/hive:/bin/false sqoop2:x:484:479:Sqoop 2 User:/var/lib/sqoop2:/sbin/nologin oozie:x:483:478:Oozie User:/var/lib/oozie:/bin/false hbase:x:482:477:HBase:/var/lib/hbase:/bin/false sentry:x:481:476:Sentry:/var/lib/sentry:/sbin/nologin impala:x:480:475:Impala:/var/lib/impala:/bin/bash spark:x:479:474:Spark:/var/lib/spark:/sbin/nologin hue:x:478:473:Hue:/usr/lib/hue:/bin/false oracle:x:818:819::/home/oracle:/bin/bash infa:x:819:821::/home/infa:/bin/bash zabbix:x:477:472:Zabbix Monitoring System:/var/lib/zabbix:/sbin/nologin
cat passwd | sed ‘2,5d‘ > passwd_sed.txt
[root@s80sit shell]# cat passwd_sed.txt root:x:0:0:root:/root:/bin/bash sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin gopher:x:13:30:gopher:/var/gopher:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:99:99:Nobody:/:/sbin/nologin dbus:x:81:81:System message bus:/:/sbin/nologin usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin rpc:x:32:32:Rpcbind Daemon:/var/cache/rpcbind:/sbin/nologin oprofile:x:16:16:Special user account to be used by OProfile:/home/oprofile:/sbin/nologin vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin rtkit:x:499:497:RealtimeKit:/proc:/sbin/nologin abrt:x:173:173::/etc/abrt:/sbin/nologin hsqldb:x:96:96::/var/lib/hsqldb:/sbin/nologin avahi-autoipd:x:170:170:Avahi IPv4LL Stack:/var/lib/avahi-autoipd:/sbin/nologin apache:x:48:48:Apache:/var/www:/sbin/nologin saslauth:x:498:76:"Saslauthd user":/var/empty/saslauth:/sbin/nologin postfix:x:89:89::/var/spool/postfix:/sbin/nologin rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin haldaemon:x:68:68:HAL daemon:/:/sbin/nologin gdm:x:42:42::/var/lib/gdm:/sbin/nologin ntp:x:38:38::/etc/ntp:/sbin/nologin pulse:x:497:495:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin webalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologin sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin tcpdump:x:72:72::/:/sbin/nologin userlog:x:816:816::/home/userlog:/bin/bash tomcat:x:815:815::/home/tomcat:/bin/bash manager:x:817:817::/home/manager:/bin/bash cloudera-scm:x:496:492:Cloudera Manager:/var/lib/cloudera-scm-server:/sbin/nologin flume:x:495:490:Flume:/var/lib/flume-ng:/bin/false hdfs:x:494:489:Hadoop HDFS:/var/lib/hadoop-hdfs:/bin/bash solr:x:493:488:Solr:/var/lib/solr:/sbin/nologin zookeeper:x:492:487:ZooKeeper:/var/lib/zookeeper:/bin/false llama:x:491:486:Llama:/var/lib/llama:/bin/bash httpfs:x:490:485:Hadoop HTTPFS:/var/lib/hadoop-httpfs:/bin/bash mapred:x:489:484:Hadoop MapReduce:/var/lib/hadoop-mapreduce:/bin/bash sqoop:x:488:483:Sqoop:/var/lib/sqoop:/bin/false yarn:x:487:482:Hadoop Yarn:/var/lib/hadoop-yarn:/bin/bash kms:x:486:481:Hadoop KMS:/var/lib/hadoop-kms:/bin/bash hive:x:485:480:Hive:/var/lib/hive:/bin/false sqoop2:x:484:479:Sqoop 2 User:/var/lib/sqoop2:/sbin/nologin oozie:x:483:478:Oozie User:/var/lib/oozie:/bin/false hbase:x:482:477:HBase:/var/lib/hbase:/bin/false sentry:x:481:476:Sentry:/var/lib/sentry:/sbin/nologin impala:x:480:475:Impala:/var/lib/impala:/bin/bash spark:x:479:474:Spark:/var/lib/spark:/sbin/nologin hue:x:478:473:Hue:/usr/lib/hue:/bin/false oracle:x:818:819::/home/oracle:/bin/bash infa:x:819:821::/home/infa:/bin/bash zabbix:x:477:472:Zabbix Monitoring System:/var/lib/zabbix:/sbin/nologin
(2)、只删除第二行
[root@s80sit shell]# cat passwd | sed ‘2d‘ root:x:0:0:root:/root:/bin/bash daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin gopher:x:13:30:gopher:/var/gopher:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:99:99:Nobody:/:/sbin/nologin dbus:x:81:81:System message bus:/:/sbin/nologin usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin rpc:x:32:32:Rpcbind Daemon:/var/cache/rpcbind:/sbin/nologin oprofile:x:16:16:Special user account to be used by OProfile:/home/oprofile:/sbin/nologin vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin rtkit:x:499:497:RealtimeKit:/proc:/sbin/nologin abrt:x:173:173::/etc/abrt:/sbin/nologin hsqldb:x:96:96::/var/lib/hsqldb:/sbin/nologin avahi-autoipd:x:170:170:Avahi IPv4LL Stack:/var/lib/avahi-autoipd:/sbin/nologin apache:x:48:48:Apache:/var/www:/sbin/nologin saslauth:x:498:76:"Saslauthd user":/var/empty/saslauth:/sbin/nologin postfix:x:89:89::/var/spool/postfix:/sbin/nologin rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin haldaemon:x:68:68:HAL daemon:/:/sbin/nologin gdm:x:42:42::/var/lib/gdm:/sbin/nologin ntp:x:38:38::/etc/ntp:/sbin/nologin pulse:x:497:495:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin webalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologin sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin tcpdump:x:72:72::/:/sbin/nologin userlog:x:816:816::/home/userlog:/bin/bash tomcat:x:815:815::/home/tomcat:/bin/bash manager:x:817:817::/home/manager:/bin/bash cloudera-scm:x:496:492:Cloudera Manager:/var/lib/cloudera-scm-server:/sbin/nologin flume:x:495:490:Flume:/var/lib/flume-ng:/bin/false hdfs:x:494:489:Hadoop HDFS:/var/lib/hadoop-hdfs:/bin/bash solr:x:493:488:Solr:/var/lib/solr:/sbin/nologin zookeeper:x:492:487:ZooKeeper:/var/lib/zookeeper:/bin/false llama:x:491:486:Llama:/var/lib/llama:/bin/bash httpfs:x:490:485:Hadoop HTTPFS:/var/lib/hadoop-httpfs:/bin/bash mapred:x:489:484:Hadoop MapReduce:/var/lib/hadoop-mapreduce:/bin/bash sqoop:x:488:483:Sqoop:/var/lib/sqoop:/bin/false yarn:x:487:482:Hadoop Yarn:/var/lib/hadoop-yarn:/bin/bash kms:x:486:481:Hadoop KMS:/var/lib/hadoop-kms:/bin/bash hive:x:485:480:Hive:/var/lib/hive:/bin/false sqoop2:x:484:479:Sqoop 2 User:/var/lib/sqoop2:/sbin/nologin oozie:x:483:478:Oozie User:/var/lib/oozie:/bin/false hbase:x:482:477:HBase:/var/lib/hbase:/bin/false sentry:x:481:476:Sentry:/var/lib/sentry:/sbin/nologin impala:x:480:475:Impala:/var/lib/impala:/bin/bash spark:x:479:474:Spark:/var/lib/spark:/sbin/nologin hue:x:478:473:Hue:/usr/lib/hue:/bin/false oracle:x:818:819::/home/oracle:/bin/bash infa:x:819:821::/home/infa:/bin/bash zabbix:x:477:472:Zabbix Monitoring System:/var/lib/zabbix:/sbin/nologin
(3)、只删除第3行到最后 sed ‘3,$d‘
[root@s80sit shell]# cat passwd | sed ‘3,$d‘ root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin
(4)、第二行后(亦即是加在第三行)加上『I am a good boy』字样！只要用 2i就可以了
cat passwd | sed ‘2i I am a good boy‘
[root@s80sit shell]# head -5 passwd | sed ‘2i I am a good boy‘ root:x:0:0:root:/root:/bin/bash I am a good boy bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
(5)要增加两行以上
比如第二行、第三行增加分别aaaa bbbb
每一行之间都必须要以反斜杠[\]来进行新行的添加喔！
[root@s80sit shell]# head -10 passwd | sed ‘2a aaaaa> bbbb ‘ root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin aaaaa bbbb daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin
2、以行为单位的替换与显示
(1)、将第2-5行的内容取代成为[aaaa]呢？
head -8 /etc/passwd | sed ‘2,5c aaaa‘
[root@s80sit shell]# head -8 /etc/passwd | sed ‘2,5c aaaa‘ root:x:0:0:root:/root:/bin/bash aaaa sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt
[root@s80sit shell]# head -8 /etc/passwd | sed ‘2,4c aaaa‘ root:x:0:0:root:/root:/bin/bash aaaa lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt
通过这个方法我们就能够将数据整行取代了哦！！！！！！！！
(2)列出 /etc/passwd 文件内的第 5-7 行
head -10 passwd | sed -n ‘5,7p‘
[root@s80sit shell]# head -10 passwd | sed -n ‘5,7p‘ lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
结论： sed 的以行为单位的显示功能,就能够将某一个文件内的某些行号选择出来显示。
3、数据的搜寻并显示
搜索 /etc/passwd有root关键字的行
(1)没有参数 (这里除了输出所有行，还输出匹配的行)
[root@s80sit shell]# cat passwd | sed ‘/root/p‘ root:x:0:0:root:/root:/bin/bash root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin gopher:x:13:30:gopher:/var/gopher:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:99:99:Nobody:/:/sbin/nologin dbus:x:81:81:System message bus:/:/sbin/nologin usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin rpc:x:32:32:Rpcbind Daemon:/var/cache/rpcbind:/sbin/nologin oprofile:x:16:16:Special user account to be used by OProfile:/home/oprofile:/sbin/nologin vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin rtkit:x:499:497:RealtimeKit:/proc:/sbin/nologin abrt:x:173:173::/etc/abrt:/sbin/nologin hsqldb:x:96:96::/var/lib/hsqldb:/sbin/nologin avahi-autoipd:x:170:170:Avahi IPv4LL Stack:/var/lib/avahi-autoipd:/sbin/nologin apache:x:48:48:Apache:/var/www:/sbin/nologin saslauth:x:498:76:"Saslauthd user":/var/empty/saslauth:/sbin/nologin postfix:x:89:89::/var/spool/postfix:/sbin/nologin rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin haldaemon:x:68:68:HAL daemon:/:/sbin/nologin gdm:x:42:42::/var/lib/gdm:/sbin/nologin ntp:x:38:38::/etc/ntp:/sbin/nologin pulse:x:497:495:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin webalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologin sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin tcpdump:x:72:72::/:/sbin/nologin userlog:x:816:816::/home/userlog:/bin/bash tomcat:x:815:815::/home/tomcat:/bin/bash manager:x:817:817::/home/manager:/bin/bash cloudera-scm:x:496:492:Cloudera Manager:/var/lib/cloudera-scm-server:/sbin/nologin flume:x:495:490:Flume:/var/lib/flume-ng:/bin/false hdfs:x:494:489:Hadoop HDFS:/var/lib/hadoop-hdfs:/bin/bash solr:x:493:488:Solr:/var/lib/solr:/sbin/nologin zookeeper:x:492:487:ZooKeeper:/var/lib/zookeeper:/bin/false llama:x:491:486:Llama:/var/lib/llama:/bin/bash httpfs:x:490:485:Hadoop HTTPFS:/var/lib/hadoop-httpfs:/bin/bash mapred:x:489:484:Hadoop MapReduce:/var/lib/hadoop-mapreduce:/bin/bash sqoop:x:488:483:Sqoop:/var/lib/sqoop:/bin/false yarn:x:487:482:Hadoop Yarn:/var/lib/hadoop-yarn:/bin/bash kms:x:486:481:Hadoop KMS:/var/lib/hadoop-kms:/bin/bash hive:x:485:480:Hive:/var/lib/hive:/bin/false sqoop2:x:484:479:Sqoop 2 User:/var/lib/sqoop2:/sbin/nologin oozie:x:483:478:Oozie User:/var/lib/oozie:/bin/false hbase:x:482:477:HBase:/var/lib/hbase:/bin/false sentry:x:481:476:Sentry:/var/lib/sentry:/sbin/nologin impala:x:480:475:Impala:/var/lib/impala:/bin/bash spark:x:479:474:Spark:/var/lib/spark:/sbin/nologin hue:x:478:473:Hue:/usr/lib/hue:/bin/false oracle:x:818:819::/home/oracle:/bin/bash infa:x:819:821::/home/infa:/bin/bash zabbix:x:477:472:Zabbix Monitoring System:/var/lib/zabbix:/sbin/nologin
(2)、后面加一个参数-n
只输出hadoop匹配的行
cat passwd | sed -n ‘/hadoop/p‘
[root@s80sit shell]# cat passwd | sed -n ‘/hadoop/p‘ hdfs:x:494:489:Hadoop HDFS:/var/lib/hadoop-hdfs:/bin/bash httpfs:x:490:485:Hadoop HTTPFS:/var/lib/hadoop-httpfs:/bin/bash mapred:x:489:484:Hadoop MapReduce:/var/lib/hadoop-mapreduce:/bin/bash yarn:x:487:482:Hadoop Yarn:/var/lib/hadoop-yarn:/bin/bash kms:x:486:481:Hadoop KMS:/var/lib/hadoop-kms:/bin/bash
[root@s80sit shell]# cat passwd | sed -n ‘/root/p‘ root:x:0:0:root:/root:/bin/bash operator:x:11:0:operator:/root:/sbin/nologin
4、数据的搜寻并删除
比如删除root所在的行
cat passwd | sed ‘/root/d‘ >> a.txt
[root@s80sit shell]# cat passwd | sed ‘/root/d‘ >> a.txt [root@s80sit shell]# head a.txt bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin
看结果，root所在的行被删除了！！！
5、多点编辑
一条sed命令，删除/etc/passwd第三行到末尾的数据，并把bash替换为blueshell
cat passwd | sed -e ‘3,$d‘ -e ‘s/bash/blueshell/‘
[root@s80sit shell]# cat passwd | sed -e ‘3,$d‘ -e ‘s/bash/blueshell/‘ root:x:0:0:root:/root:/bin/blueshell bin:x:1:1:bin:/bin:/sbin/nologin
6、数据的搜寻并替换
后面整理！！！！！！！！！！！！！！
本文出自 “梁小明的博客” 博客，请务必保留此出处http://7038006.blog.51cto.com/7028006/1825682
标签：linux sed
原文地址：http://7038006.blog.51cto.com/7028006/1825682
