filesearch.ps1

param(
    $place = $PSScriptRoot,
    $what 
    )

$regexPattern = "\\"
if($caseSensitive -eq $false) { $regexPattern = "(?i)$regexPattern" }
$regex = New-Object System.Text.RegularExpressions.Regex $regexPattern

# Function for highlighting pattern in the line.
function Write-HostAndHighlightPattern( [ string ]$inputText )
{
    $index = 0
    while( $index -lt $inputText.Length )
    {
        $match = $regex.Match($inputText, $index)
        if( $match.Success -and $match.Length -gt 0 )
        {
            Write-Host $inputText.SubString( $index, $match.Index - $index ) -nonewline
            Write-Host $match.Value.ToString() -ForegroundColor Red -nonewline
            $index = $match.Index + $match.Length
        }
        else
        {
            Write-Host $inputText.SubString( $index ) -nonewline
            $index = $inputText.Length
        }
    }
}

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


[array]$list = Get-ChildItem $place -recurse | %{ Write-Host "Examining file:" |  Write-HostAndHighlightPattern $_.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-HostAndHighlightPattern $file
}

Write-Host "Done!"