在perl单线程中添加

Question

我正在尝试使用perl one liner为数字添加1000。这是我试过的：

perl -pi -e "s/ZZZ(\d+)ZZZ/ZZZ\1+1000ZZZ/e" file.txt

我希望将1000添加到ZZZ之间的数字。但我收到错误消息：

Backslash found where operator expected at -e line 1, near "ZZZ\"
Bareword found where operator expected at -e line 1, near "1000ZZZ"
    (Missing operator before ZZZ?)
syntax error at -e line 1, near "ZZZ\"
Execution of -e aborted due to compilation errors.

感谢您的帮助！

Answer 1

使用$1并使用连接在RHS上构建一个新字符串：

perl -pi -e 's/ZZZ(\d+)ZZZ/ZZZ . ($1 + 1000) . ZZZ/e' file.txt

注意：这不适用于perl -Mstrict