Asterisk serve as wildcards, so how would you check for the presence of an asterisk? It's much harder than you might think:
PS> 'Test*' -eq '*' False PS> 'Test*' -like '**'
False
PS> 'Test' -like '**'
False
None of those work. Regular expressions do:
PS> 'Test*' -match '\*'
False
PS> 'Test' -match '\*'
False
