VS2010 Post-build event, replace string in a file. Powershell?

I need to replace a simple string in a minified .js file 开发者_运维问答after a successful build in VS2010.

So I'm trying to run a simple command line call from the Post-build events window.

This example, from here: https://blogs.technet.com/b/heyscriptingguy/archive/2008/01/17/how-can-i-use-windows-powershell-to-replace-characters-in-a-text-file.aspx totally mangulates the resulting .js file. Something is wrong, I suspect it is coming across some weird chars in my minified .js file that screws it up.

(Get-Content C:\Scripts\Test.js) | 
Foreach-Object {$_ -replace "// Old JS comment", "// New JS comment"} | 
Set-Content C:\Scripts\Test.js

How can I achieve such a simple task like I could do in unix in a single line..?

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It would be great to see the diff file. Without more info, some info:

• Set-Content adds a new empty line at the end (probably not a problem for you)

• You can use -replace operator like this:

  (gc C:\Scripts\Test.js) -replace 'a','b' | sc C:\Scripts\Test.js

  -replace works on arrays too.

• You could read the content via [io.file]::ReadAllText('c:\scripts\test.js') and use-replace`, but again, I don't think there will be significant difference.

Edit:

Double quotes are used when evaluating the string. Example:

$r = 'x'
$a = 'test'
'beg',1,2,"3x",'4xfour','last' -replace "1|$r","$a"

gives

beg
test
2
3test
4testfour
anything

To save the content with no ending new line, just use [io.file]::WriteAllText

$repl = (gc C:\Scripts\Test.js) -replace 'a','b' -join "`r`n"
[io.file]::WriteAllText('c:\scripts\test.js', $repl)