PowerShell Community

A place for the community to learn PowerShell and share insights

Determine if a folder exists

Q: Is there any way to determine whether or not a specific folder exists on a computer? A: There are loads of ways you can do this. The Test-Path Cmdlet The easiest way to do this is to use the Test-Path cmdlet. It looks for a given path and returns True if it exists, otherwise it returns False. You could evaluate the result of the Test-Path...

Reading a text file bottom up

Q: I have a log file in which new data is appended to the end of the file. That means the most recent entries are at the end of the file. I’d like to be able to read the file starting with the last line and then ending with the first line, but I can’t figure out how to do that. A: There are loads of ways you can do this. A simple way is ...

Getting Yesterday’s Date

Q: How can I get yesterday's date? A: You can use a combination of the Get-Date cmdlet and .NET Time/Date methods. First, let's look at dates in PowerShell and .NET Then we can look at how to calculate yesterday and use that in your scripts. Dates in PowerShell Let's start by looking at how you can deal with dates and times. As you ...

Changing Drive Letters and Labels via PowerShell

Q: I want to change the drive letter and the drive label for a new USB drive. Is there a way with PowerShell? A: Of course. One way is to use WMI and the CIM cmdlets. PowerShell does not have a cmdlet to change the drive letter or the caption directly. But the good news is that you can use WMI and the CIM cmdlets to change both the drive ...

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