How to delete some old files and keep the latest three copies only?-CodePudding

I want to delete some old files and keep the latest 3 copies with powershell command.

such as :

A.1.0.txt
A.3.0.txt
A.6.1.txt
A.9.2.txt
A.2.2.txt
B.1.txt
B.4.txt
B.7.4.txt
B.0.3.2.6.4.txt
....

Each file has the timestamp. It seems easy handle by bash shell,such as :

ls -t A.*txt| head -n -3 | xargs --no-run-if-empty rm
ls -t B.*txt| head -n -3 | xargs --no-run-if-empty rm

I am not good at powershell all command,is there any way to delete the old files? Could some one give me some advice?

Thanks.

CodePudding user response：

Assuming you want to delete all files in the directory except the 3 newest files, these would be the commands:

$Items = Get-ChildItem -Path "C:\Path\to\files\"
$Items | Sort-Object CreationTime | Select-Object -First ($Item.Count - 3) | Remove-Item

CodePudding user response：

Get-ChildItem -Path ./A.[0-9]*|Sort-Object CreationTime| Select-Object -First 3

Get-ChildItem -Path ./A.[0-9]* |Sort-Object LastWriteTime|Select-Object -first 3