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FreeBSD: Delete User Account Command

How do I remove the tom user under FreeBSD operating system using command line options?
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Linux: Delete / Remove User Account

How do I remove a user's access from my server? How do I delete a user account under Linux operating systems?
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Many commands accepts username and passwords on the command line and ps, top, sockstat and many commands can display this information to all users on the system. How do I prevent users from seeing information about processes that are being run under another UID to avoid information leakage under FreeBSD operating systems?
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