Mastering Windows PowerShell Scripting - Third Edition

Contains, StartsWith, and EndsWith

The Contains, StartsWith, and EndsWith methods will each return true or false, depending on whether or not the string contains the specified string.

Contains returns true if the value is found within the subject string:

$string = 'I am the subject' 
$string.Contains('the')    # Returns $true 

StartsWith and EndsWith return true if the subject string starts or ends with the specified value:

$string = 'abc' 
$string.StartsWith('ab') 
$string.EndsWith('bc')