Write output to a text file in PowerShell
Use the Out-File cmdlet
Compare-Object ... | Out-File C:\filename.txtOptionally, add -Encoding utf8 to Out-File as the default encoding is not really ideal for many uses.
The simplest way is to just redirect the output, like so:
Compare-Object $(Get-Content c:\user\documents\List1.txt) $(Get-Content c:\user\documents\List2.txt) > c:\user\documents\diff_output.txt> will cause the output file to be overwritten if it already exists.>> will append new text to the end of the output file if it already exists.
Another way this could be accomplished is by using the Start-Transcript and Stop-Transcript commands, respectively before and after command execution. This would capture the entire session including commands.
For this particular case Out-File is probably your best bet though.