如何在Linux/Mac系统中用单行命令批量替换文件中的多段文本？

Hey there! Let's get this text replacement sorted with a single line of sed—it's perfect for quick in-place edits like this. Here's the command you need:

sed -i -e 's/my/our/gI' -e 's/xyz/abc/g' my.txt

Breakdown of the command: #

• -i: This tells sed to modify the file in-place (no need to redirect output to a new file). If you want to keep a backup of the original, use -i.bak instead—this creates my.txt.bak with the original content before changes are made.
• -e 's/my/our/gI': The first replacement rule:
  • s/old/new/ is the basic sed substitution syntax
  • g means "global"—replace every occurrence of my in a line, not just the first one
  • I makes the match case-insensitive, so it will replace both lowercase my and uppercase My (which shows up in your original text). If you only want to target lowercase my, just remove the I.
• -e 's/xyz/abc/g': The second replacement rule, which globally replaces every instance of xyz with abc.

Example before/after: #

Original my.txt content:
This is my xyz. My color is white.

After running the command:
This is our abc. Our color is white.

Note for macOS users: #

If you're on macOS, the sed syntax is a bit different—you need to add an empty string after -i like this:

sed -i '' -e 's/my/our/gI' -e 's/xyz/abc/g' my.txt

内容的提问来源于stack exchange，提问作者user1187968