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Count files in a directory that start with specific letters

Posted on 2016-07-18
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Last Modified: 2016-08-15
Hi:

 I need to search for files in a specific directory that start with a letter A. or AB. in Windows Powershell.

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Question by:LuckyLucks
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by:Qlemo
Qlemo earned 250 total points
ID: 41717542
@(Get-ChildItem C:\Temp\EE\Path -Filter 'A*').Count

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This will not search in subfolders - if you need that, add -recurse to the command in brackets.
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oBdA earned 250 total points
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Hey, are you same Qlemo who wants to save resources? ;)
That certainly works, but just for counting, it's a waste of memory, because PS needs to build a potentially huge array. Try that with -recurse on C:\Windows - the PS instance here goes from 20MB to 340MB (yes, a [GC]::collect() will reduce that, but still ...)
This is less resource intensive if it's just about counting:
(Get-ChildItem C:\Windows -Filter "A*" | Measure-Object).Count

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Or the good old fashioned way:
$Count = 0; Get-ChildItem C:\Windows -Filter "A*" | % {$Count++}; $Count

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by:Qlemo
ID: 41717708
Grin. I didn't expect the match going into thousands :D.
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