PowerShell equivalent to grep -f

Question

I\'m looking for the PowerShell equivalent to grep --file=filename. If you don\'t know grep, filename is a text file where each line has a regular

Answer 1

Maybe?

[regex]$regex = (get-content  |
foreach {
          '(?:{0})' -f $_
        }) -join '|'

Get-Content  -ReadCount 10000 |
 foreach {
           if ($_ -match $regex)
             {
              $true
              break
             }
         }