how to iterate over files with powershell?

I want to iterate over files in a folder using po开发者_如何学Gowershell script;

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Get-ChildItem | ForEach-Object { <# do what you need to do #> }

or shorter:

gci | % { <# ... #> }

or if you want an explicit looping construct:

foreach ($file in Get-ChildItem) {
    # ...
}

Note however, that foreach will only run once all output from Get-ChildItem is collected. In my opinion most Powershell code should use the pipeline as much as possible.