PowerShell/Docs/list-unused-files.md
2023-05-26 12:20:18 +02:00

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## The *list-unused-files.ps1* Script
This PowerShell script scans and lists files in a folder with last access time older than number of days.
## Parameters
```powershell
/home/mf/Repos/PowerShell/Scripts/list-unused-files.ps1 [[-DirTree] <String>] [[-Days] <Int32>] [<CommonParameters>]
-DirTree <String>
Specifies the path to the directory tree
Required? false
Position? 1
Default value
Accept pipeline input? false
Accept wildcard characters? false
-Days <Int32>
Specifies the number of days
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 C:\ 100
```
## Notes
Author: Markus Fleschutz | License: CC0
## Related Links
https://github.com/fleschutz/PowerShell
## Source Code
```powershell
<#
.SYNOPSIS
Lists unused files in a directory tree
.DESCRIPTION
This PowerShell script scans and lists files in a folder with last access time older than number of days.
.PARAMETER DirTree
Specifies the path to the directory tree
.PARAMETER Days
Specifies the number of days
.EXAMPLE
PS> ./list-unused-files C:\ 100
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz | License: CC0
#>
param([string]$DirTree = "", [int]$Days = 100)
write-host "Listing files in $DirTree with last access time older than $Days days"
try {
$cutOffDate = (Get-Date).AddDays(-$Days)
Get-ChildItem -path $DirTree -recurse | Where-Object {$_.LastAccessTime -le $cutOffDate} | select fullname
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}
```
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