group id

How do I test existence of a text file in bash running under Unix like operating systems?

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Can you completely explain the nine permissions bits on UNIX or Linux files?

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

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Q. User tom is a member of a group called sales and printer. I’d like to remove tom from a group called printer without editing any user configuration text files stored at /etc/ directory?

{ 18 comments }

Can you explain me the format of /etc/group user group file under Linux / UNIX operating systems?

{ 23 comments }

Q. Can you explain /etc/passwd file format for Linux and UNIX operating systems?

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