Users and permissions

Question 1 of 10

Which account a process runs as and what groups it has, which of the three permission triples a process gets, what r, w, and x mean on a directory along the path to a file, chmod with symbols and numbers, chown, checking a repair as the user who needs access, and a shared directory with setgid and sticky. The questions follow the lessons “Users, groups, and process identity”, “File and directory permissions”, “Changing and diagnosing permissions”, and “A shared directory: setgid, sticky, and umask”.

10 questions · threshold 70%

Read the output

You have just been added to the reports group. In a terminal that was already open, two commands print different things. Why?

$ id
uid=1000(student) gid=1000(student) groups=1000(student),27(sudo)
$ id student
uid=1000(student) gid=1000(student) groups=1000(student),27(sudo),1002(reports)

id describes the shell with its groups from before the change, id student the account.
The new membership has not made it into the account yet.
The reports group was created wrongly and must be recreated.
id without a name shows the groups of the root user.

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