Categories
PowerShell Scripting

PowerShell Remove Old Files From a Directory

Script for removal of old backup or logfiles from a specific directory. The example below removes all files from a directory that are older than 90 days. A log of all files that are removed is written to the windows eventlog.

# Global config settings...
[string]$sDirName = "D:\LogFiles"
[string]$sFileNameMask = "*.log"
[string]$sGCIMask = $sDirName + "\" + $sFileNameMask
[string]$sEventLogMessage = "### Cleanup Script Started... ###`r`n"

# Functions and Procedures...
function fGetFileModTime([string]$sFileName) {
  $vFileInfo = get-childitem $sFileName
  return $vFileInfo.lastwritetime 
}

# Start Main script...
if (Test-Path $sDirName) {
get-childitem $sGCIMask | 
    % { 
        # Get File Last Write Time...
        [datetime]$dFileModTime = fGetFileModTime($_.fullname)
        if ($dFileModTime -lt (Get-date).AddDays(-90)) {
        remove-item $_.fullname
        $sEventLogMessage = $sEventLogMessage + "File " + $_.fullname + " (" + $dFileModTime.DateTime + ") removed...`r`n"
        }
    }
}

# Finish and Cleanup...
[string]$sEventLogMessage = $sEventLogMessage + "### Cleanup Script Finished... ###"
write-eventLog -LogName "Windows PowerShell" -Source "PowerShell" -EventID 30001 -Message $sEventLogMessage -EntryType Information