无需正则表达式即可轻松搜索和替换 [英] Simple search and replace without regex

问题描述

我有一个带有各种通配符的文件，我希望能够从一个(bash)shell脚本中替换它.在变量之一包含正则表达式专用字符之前，我有以下几种方法可以很好地发挥作用:

I've got a file with various wildcards in it that I want to be able to substitute from a (bash) shell script. I've got the following which works great until one of the variables contains characters that are special to regexes:

VERSION="1.0"
perl -i -pe "s/VERSION/${VERSION}/g" txtfile.txt   # no problems here

APP_NAME="../../path/to/myapp"
perl -i -pe "s/APP_NAME/${APP_NAME}/g" txtfile.txt  # Error!

因此，我希望只执行文字替换而不是正则表达式的东西.是否可以使用perl或其他工具进行任何简单的单行调用?

So instead I want something that just performs a literal text replacement rather than a regex. Are there any simple one-line invocations with perl or another tool that will do this?

推荐答案

有关以下内容:

perl -i -pe "s|APP_NAME|\\Q${APP_NAME}|g" txtfile.txt

由于竖线作为路径的一部分不是合法字符，因此您可以使用.

Since a vertical bar is not a legal character as part of a path, you are good to go.

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