使用 a 命令进行追加

beyes

追加内容到文本中使用 a 命令，语法如下：

#sed 'ADDRESS a\
    要追加的行' filename

#sed '/PATTERN/ a\
    要追加的行' filename

供测试用文件内容如下：

[beyes@beyes   sed]$ cat test.txt
Linux Sysadmin
Databases - Oracle, mySQL etc.
Security (Firewall, Network, Online Security etc)
Storage in Linux
Productivity (Too many technologies to explore, not much time available)
Windows- Sysadmin, reboot etc.

例一：将内容追加到第三行后

[beyes@beyes   sed]$ sed '3 a\
> www.groad.net' test.txt
Linux Sysadmin
Databases - Oracle, mySQL etc.
Security (Firewall, Network, Online Security etc)
www.groad.net
Storage in Linux
Productivity (Too many technologies to explore, not much time available)
Windows- Sysadmin, reboot etc.

例二：将内容追加到每一匹配行之后

[beyes@beyes   sed]$ sed '/Sysadmin/a \
> www groad.net' test.txt
Linux Sysadmin
www groad.netDatabases - Oracle, mySQL etc.
Security (Firewall, Network, Online Security etc)
Storage in Linux
Productivity (Too many technologies to explore, not much time available)
Windows- Sysadmin, reboot etc.
www groad.net

上面，追加 www.groad.net 到每一含有 Sysadmin 的行后。

例三：将内容追加到末行

[beyes@beyes   sed]$ sed '$ a\
> www.groad.net' test.txt
Linux Sysadmin
Databases - Oracle, mySQL etc.
Security (Firewall, Network, Online Security etc)
Storage in Linux
Productivity (Too many technologies to explore, not much time available)
Windows- Sysadmin, reboot etc.
www.groad.net