Sed text processing and stream editor

[MakerGYT]

Basic

Replace

sed -i 's/before/after/' file

Execute multiple commands in the same line

sed -i -e '' -e '' file

Value

sed -i 's/'$value'/after/' file 

Save

sed -i 's/abc\(def\)/ghi/' file # ghidef
sed -i 's/abc\(def\)/\1/' file # defdef
sed -i 's/abc.*/[&]/' file # [abc.*] 

Delete

sed -i '1,$d' file # remove 1-end line
sed -i 's/abc//' file # delete all abc

Note

• Special matching characters need to be escaped

Question

• Cannot execute when the variable contains special characters

Refrence

• Linux命令大全-文件和目录管理-sed
• linux在线手册-sed
• Linux sed 命令