用Bash代替垂直线 [英] Substitute vertical lines in Bash

问题描述

我很难完成我的脚本，因为其中的一部分无法按我希望的方式发挥作用.

I'm having a hard time finishing my script since there's this part which doesn't function the way I wanted it to be.

我的脚本中有这一行:

cat /home/tmp/temp1.txt | awk '{gsub("~",RS);gsub("*",RS);print}' >  /home/tmp/temp.txt

工作正常，是的.但是当我做这样的事情时:

It works fine, yes. But when I do something like this:

cat /home/tmp/temp1.txt | awk '{gsub("|",RS);print}' >  /home/tmp/temp.txt

这根本不起作用.我想将所有竖线更改为新行，但我无法实现.请帮我解决一下这个.谢谢

It's not working at all. I wanted to change all my vertical bars into new line and yet I can't achieve it. Please help me with this. Thanks

推荐答案

您可以像这样在一个awk中进行所有替换:

You can do all the replacements in a single awk like this:

awk '{gsub(/[*~|]/, RS)} 1' /home/tmp/temp1.txt

否则，Pipe用于需要转义的正则表达式替换.但是，在字符类 [...] 内部，不需要如上所示对管道或星号进行转义.

Pipe is otherwise used for regex alternation that needs escaping. However inside the character class [...] pipe or asterisk need not be escaped as shown above.

最好在 gsub 函数中使用/.../正则表达式文字而不是带引号的字符串.

It is also better to use /.../ regex literal in gsub function instead of quoted string.

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