Searches substring in the files in specific directory, recursively.

substrfilematcher.ps1

param(
    $place = $PSScriptRoot,
    $what 
    )

$time1 = Get-Date -format HH:mm:ss

[array]$list = Get-ChildItem $place -recurse | %{ Write-Host Examining file: $_.fullname; $_ } | ? { $_.psiscontainer -eq $false } | ?{ gc $_.pspath | select-string -pattern $what } | %{ $_.FullName }

$time2 = Get-Date -format HH:mm:ss

$TimeDiff = New-TimeSpan $time1 $time2

if( $TimeDiff.Seconds -lt 0 ) {
    $Hrs  = ( $TimeDiff.Hours   ) + 23
    $Mins = ( $TimeDiff.Minutes ) + 59
    $Secs = ( $TimeDiff.Seconds ) + 59 
}
else {
    $Hrs  = $TimeDiff.Hours
    $Mins = $TimeDiff.Minutes
    $Secs = $TimeDiff.Seconds 
}
$Difference = '{0:00}:{1:00}:{2:00}' -f $Hrs, $Mins, $Secs

Write-Host "Time elapsed: " $Difference
Write-Host "Files found: "  $list.Length

foreach( $file in $list ) {
    Write-Host $file
}

Write-Host "Done!"