使用 c 命令进行行替换

beyes

使用 c 命令用来对匹配行替换，语法为：

#sed 'ADDRESS c\
    new line' filename

#sed '/PATTERN/ c\
    new line' filename[/mw_shl_code]

测试文本内容如下：
[quote][beyes@beyes   sed]$ cat test.txt
Linux Sysadmin
Databases - Oracle, mySQL etc.
Security (Firewall, Network, Online Security etc)
Storage in LinuxProductivity (Too many technologies to explore, not much time available)
Windows- Sysadmin, reboot etc.

例一：替换第一行

[beyes@beyes   sed]$ sed '1 c\
> www.groad.net' test.txt
www.groad.net
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.

例二：替换所有的匹配行

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

例三：替换掉最后一行

[beyes@beyes   sed]$ sed '$ c\
> 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)
www.groad.net