Add and remove lines in text based config files with PowerShell

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Add and remove lines in text based config files with PowerShell

7. April 2017

PowerShell Version: >4 
Modules: none

I want to take some text file and look for a specific line, then delete that line and add some other line at the end of the file. Here’s how I made it work:

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# define file for input/output $outfile = "C:\test.properties" # set line to be removed $old_content = 'install=1' # set line to be added $new_content = 'install=0'   #check if new line is already in place and then skip $check = get-content $outfile | select-string -pattern $new_content if (!$check)     {     #use temporary variable for enabling overwrite     $tmp = get-content $outfile | select-string -pattern $old_content -notmatch     $tmp | Set-Content $outfile     # add new content at the end of the file     $new_content | Out-File $outfile -Append ascii     }

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April 6, 2017 at 05:56PM