You use the chmod command to set each of these permissions. To see what permissions have been set on a file or directory, we ...

Many Linux commands can do more than you might think. The usermod command is one such command, and it can be very handy.

You can check user groups in Linux with commands like groups, id, getent, and /etc/group to manage permissions easily.

Learn how to add, delete, and grant sudo privileges to users in Red Hat Enterprise Linux (RHEL), AlmaLinux and Rocky Linux.