Different ways to perform string manipulation within a file in PowerShell.
Replace text
Powershell version 3 and above
(Get-Content c:\temp\test.txt).replace('[MYID]', 'MyValue') | Set-Content c:\temp\test.txt
Powershell version 2
(Get-Content c:\temp\test.txt) -replace '\[MYID\]', 'MyValue' | Set-Content c:\temp\test.txt
In version 2 \ sign need to be present before a spiecial character.
Remove blank spaces
(Get-Content c:\temp\test.txt) -notmatch '(^[\s,-]*$)|(rows\s*affected)' | Set-Content c:\temp\test.txt
