Users & Groups Management HowTos

Learn all about users and groups on Linux and Unix like operating systems. Topic include user & group creations, permissions & ownership, access control, ACL, and more ( rss feed ).

I‘m CentOS Linux version 5.x user and I’d like to restrict execution of /usr/sbin/userhelper to console users only in xusers group?

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Q. How do I create username or user groups in upper case under Linux / *BSD / UNIX operating systems?

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How do I fix – “Public key Blacklisted (see ssh-vulnkey(1))” error under any Linux based desktop system?

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How do I check the existing Linux / UNIX users and groups under Linux / UNIX operating system?

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