PowerShell

This article explains how to list and remove old files in a folder using PowerShell.

Question

So I have all these files in my backup folder. How can I keep only the files modified at most seven days ago, whilst removing the rest?

Short Answer

We can use a simple chain like this:

Get-ChildItem -Recurse |

    # change the extension as appropriate
    ?{ $_.Extension -eq ".bak" } |

    # change the time window as appropriate
    ?{ $_.LastWriteTime -lt (Get-Date).AddDays(-7) } |

    # now remove the results
    Remove-Item

We can then add or remove filters to this pattern as appropriate to your scenario.

So what more stuff can we add?

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