Creating RAR Archives From Windows Powershell

backup-winrar.ps1

#Set-ExecutionPolicy Unrestricted
$fromFolderPath = $args[0][0]
$toFolderPath = $args[0][1]
$toFilename = ""

if ($fromFolderPath.Split("\")[-1] -eq "")
{
    $toFilename = $fromFolderPath.Split("\")[-2]
    $fromFolderPath = $fromFolderPath.SubString(0, ($fromFolderPath.length-1))
}
else
{
    $toFilename = $fromFolderPath.Split("\")[-1]
}

$toFilePath = $($toFolderPath+"\"+$toFilename+".rar")

#Keep backup if archiving fails
try
{
    move $toFilePath $($toFilePath+".old" )
}
catch
{
    echo "No Backup Found"
}

#Generate RAR archive
$argList = @("a",  ('"'+$toFilePath+'"'), ('"'+$fromFolderPath+'"'))

Start-Process -FilePath "C:\Program Files\Winrar\winrar.exe" -ArgumentList $argList -NoNewWindow -Wait

#Remove Backup
$toFilePathOld = ($toFilePath)+".old"
del $toFilePathOld

example-usage.ps1

$fromFolder = $currentPath.Substring(0, ($currentPath.length-1))
$toFolder = ($env:USERPROFILE+"\Desktop\Backup")

$argList = @($PWD.Path, $toFolder)
& ($env:PS_SCRIPTS+"\backup-winrar.ps1") $argList