如何替换powershell中的字符串"var num =[‘asd31 23’，'asd31']“

Question

替换给定字符串

var num = ['red222','edr223']; //this value is always changing

如下所示

var num = ['rev11111','rev222']; //replace with any string

试过：

num = @('rev11111','rev222') // text present in file say file.txt
(Get-Content "C:\file.txt").Replace('var num = *',"var num = ["+(@($Num) -join ",")+"];" )| Set-Content "C:\file.txt"

这并没有多大帮助。当[ ]不为空时，它不能替换。如何替换字符串。请帮帮我！

Answer 1

我认为您必须使用-replace运算符，而不是string对象的Replace-method。因为Replace不支持Regex。

如果您更改为：

$Num = @('rev11111','rev222') # text present in file say file.txt
(Get-Content "C:\temp\input.txt") -replace ('var num = \[.*\]', "var num = [$(@($Num) -join ",")]") | Set-Content "C:\file.txt"

好像很管用。我还将Regex扩展到var num = \[.*\]。

希望这能有所帮助。