Powershell: Trim trailing whitespace from all files recursively

One Line:

ls -r *.cs | % {(gc $_ | % { $_.TrimEnd() }) | sc $_ }

Multiple Lines (same command):

Get-ChildItem -Recurse *.cs |
    ForEach-Object
    {
        (Get-Content $_ | ForEach-Object { $_.TrimEnd() }) |
        Set-Content $_
    }

Note that we're filtering for files with a *.cs extension. To include all files, remove that filter.

See also:

• https://stackoverflow.com/questions/10480673/find-and-replace-in-files-fails
• https://stackoverflow.com/questions/3579157/how-to-use-powershell-to-remove-space-from-the-end-of-a-line-in-a-text-file