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It's not case sensitive in terms of execution, this is just how they are stylized: "Verb-Noun" is the standard format for PowerShell commands (or "cmdlets", to use their terminology).

Have you ever used Powershell? All Powershell cmdlets are named in that way, and you also can create aliases.

You can also easily setup aliases, and there are many unixy aliases built in. For example 'ls', 'cat', other will work. I don't even know the commandlets they're aliasing.