Tag sysadmin, cli-reference, bash

Change file ownership in Linux using chown: syntax, flags, recursive usage, error codes, and troubleshooting. A complete DevOps CLI reference for production sys

Add a user with sudo privileges on Linux using useradd or adduser plus usermod. Step-by-step CLI guide with flags, group membership, and visudo best practices.

Change password in Linux using the passwd command. Learn syntax, flags, exit codes, and troubleshooting for user and root password changes.