How do I output lines that do not match 'this_string' using Get-Content and Select-String in PowerShell?

Question

I found a post about users that wanted to use grep in PowerShell. For example,

PS> Get-Content file_to_grep | Select-String \"the_thing_to_grep_for\"
<         


        

Answer 1

gc  file_to_grep | ? {!$_.Contains("the_thing_to_grep_for")}

which is case-sensitive comparison by the way.