PowerShell/docs/list-unused-files.md
2024-08-15 09:51:46 +02:00

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Script: *list-unused-files.ps1*
========================
This PowerShell script scans a directory tree and lists unused files (no read/write access since a number of days).
Parameters
----------
```powershell
PS> ./list-unused-files.ps1 [[-path] <String>] [[-days] <Int32>] [<CommonParameters>]
-path <String>
Specifies the path to the directory tree (current working dir by default)
Required? false
Position? 1
Default value "$PWD"
Accept pipeline input? false
Accept wildcard characters? false
-days <Int32>
Specifies the number of days (100 by default)
Required? false
Position? 2
Default value 100
Accept pipeline input? false
Accept wildcard characters? false
[<CommonParameters>]
This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
```
Example
-------
```powershell
PS> ./list-unused-files.ps1 C:\Windows
...
Found 43729 unused files (no access for 100 days) within 📂C:\Windows in 113 sec
```
Notes
-----
Author: Markus Fleschutz | License: CC0
Related Links
-------------
https://github.com/fleschutz/PowerShell
Script Content
--------------
```powershell
<#
.SYNOPSIS
Lists unused files in a directory tree
.DESCRIPTION
This PowerShell script scans a directory tree and lists unused files (no read/write access since a number of days).
.PARAMETER path
Specifies the path to the directory tree (current working dir by default)
.PARAMETER days
Specifies the number of days (100 by default)
.EXAMPLE
PS> ./list-unused-files.ps1 C:\Windows
...
✔️ Found 43729 unused files (no access for 100 days) within 📂C:\Windows in 113 sec
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz | License: CC0
#>
param([string]$path = "$PWD", [int]$days = 100)
try {
$stopWatch = [system.diagnostics.stopwatch]::startNew()
$path = Resolve-Path "$path"
Write-Progress "Scanning $path for unused files..."
$cutOffDate = (Get-Date).AddDays(-$Days)
[int]$count = 0
Get-ChildItem -path $path -recurse | Where-Object {$_.LastAccessTime -le $cutOffDate} | Foreach-Object {
"📄$($_.FullName)"
$count++
}
Write-Progress -completed " "
[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
"✔️ Found $count unused files (no access for $days days) within 📂$path in $elapsed sec"
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}
```
*(generated by convert-ps2md.ps1 using the comment-based help of list-unused-files.ps1 as of 08/15/2024 09:50:50)*