Sed附加线 [英] Sed Append Line

问题描述

sed是否有命令在匹配的行之后追加行?我尝试四处搜寻，但对结果有些困惑.

Does sed have a command to append a line after a matched line? I tried searching around but was a bit confused with the results.

我想让它匹配

#address=/doubleclick.net/127.0.0.1

并在其下方添加一行，如

And add a line below it like

#address=/doubleclick.net/127.0.0.1

address=/anotherurl/ipaddress

这可能吗?

推荐答案

您可以在 sed 中使用 a (附加)命令:

You can use the a(append) command in sed:

$ sed -i '/^#address=\/doubleclick.net\/127.0.0.1$/a\
> address=/anotherurl/ipaddress' file.txt

或者您可以使用 s (替代)命令:

Or you can use s(substitute) command:

$ sed -i 's@^#address=/doubleclick.net/127.0.0.1$@&\naddress=/anotherurl/ipaddress@' file.txt

注意: $ 和> 是bash提示.

Note: $ and > are bash prompt.

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