Powershell Only Add to Array if it doesn't exist

Powershell Only Add to Array if it doesn't exist

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How do I check if a file is under a given directory, in PowerShell?

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Powershell: if items in array1 contain items in array2, what am I doing wrong here

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Powershell script with Contains operator not working

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Removing Strings if Substring of the String is Present in Same Array

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Powershell contains - match on partial string and list?

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