powershell contains not working

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爱一瞬间的悲伤
爱一瞬间的悲伤 2021-01-27 00:36

I am trying filter by the name of each share using $Share.Name. However, when I try to use -contains in the if statement below, I get no r

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  •  孤城傲影
    2021-01-27 01:00

    Contains is meant to work against arrays. Consider the following examples

    PS C:\Users\Cameron> 1,2,3 -contains 1
    True
    
    PS C:\Users\Cameron> "123" -contains 1
    False
    
    PS C:\Users\Cameron> "123" -contains 123
    True
    

    If you are looking to see if a string contains a text pattern then you have a few options. The first 2 would be -match operator or the .Contains() string method

    1. -match would be one of the simpler examples to use in and If statement. Note: -Match supports .Net regular expressions so be sure you don't put in any special characters as you might not get the results you expect.

      PS C:\Users\Cameron> "Matt" -match "m"
      True
      
      PS C:\Users\Cameron> "Matt" -match "."
      True
      

      -match is not case sensitive by default so the first example above returns True. The second example is looking to match any character which is what . represents in regex which is why it returns True as well.

    2. .Contains(): -match is great but for simple strings you can ....

      "123".Contains("2")
      True
      
      "123".Contains(".")
      False
      

      Note that .Contains() is case sensitive

      "asdf".Contains('F')
      False
      
      "asdf".Contains('f')
      True
      

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