CLI Magic: For Geek Cred, Try These One-liners

"The sorted list is passed to cut, where the d option indicates the field's delimiter character. cut breaks into pieces each line, and the first field f1 is the one that you need to display. That's better; it shows only usernames now. But you may not want to see all the system usernames, like apache, bin, and lp. If you just want human users, try this:"

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