使用 sed 和 grep 批量修改文件指定内容

在 /opt/path 目录下查找hello,并将所有的hello替换为world

sed -i 's/hello/world/g' `grep -rl hello /opt/path`

在 /opt/path 目录下查找hello/hello,并将所有的hello/hello替换为world/world

sed -i 's/hello\/hello/world\/world/g' `grep -rl 'hello/hello' /opt/path`

The s command (as in substitute) is probably the most important in sed and has a lot of different options. The syntax of the s command is ‘<samp>s/<var style="font-style: italic; font-weight: inherit;">regexp</var>/<var style="font-style: italic; font-weight: inherit;">replacement</var>/<var style="font-style: italic; font-weight: inherit;">flags</var></samp>’.

Its basic concept is simple: the s command attempts to match the pattern space against the supplied regular expression <var style="font-style: italic; font-weight: inherit;">regexp</var>; if the match is successful, then that portion of the pattern space which was matched is replaced with <var style="font-style: italic; font-weight: inherit;">replacement</var>.

For details about <var style="font-style: italic; font-weight: inherit;">regexp</var> syntax see Regular Expression Addresses.

The <var style="font-style: italic; font-weight: inherit;">replacement</var> can contain \<var style="font-style: italic; font-weight: inherit;">n</var> (<var style="font-style: italic; font-weight: inherit;">n</var> being a number from 1 to 9, inclusive) references, which refer to the portion of the match which is contained between the <var style="font-style: italic; font-weight: inherit;">n</var>th \( and its matching \). Also, the <var style="font-style: italic; font-weight: inherit;">replacement</var> can contain unescaped & characters which reference the whole matched portion of the pattern space.

The / characters may be uniformly replaced by any other single character within any given s command. The / character (or whatever other character is used in its stead) can appear in the <var style="font-style: italic; font-weight: inherit;">regexp</var> or <var style="font-style: italic; font-weight: inherit;">replacement</var> only if it is preceded by a \ character.

关于本文

• 作者：侠骨留香
• 时间：2019年11月20日
• 联系作者：xiaguliuxiang@foxmail.com

参考资料

1. http://www.gnu.org/software/sed/manual/sed.html