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CompTIA Linux+ XK0-006 · Domain 2: Services and user management

Local accounts and groups: useradd, usermod -aG, userdel, groupadd, passwd, chage

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Last reviewed September 30, 2026 · Leer en español

Every process on Linux runs as some user, and access to files and commands follows from that user and its groups. Creating and maintaining local accounts is basic administration work and a steady source of Linux+ questions, especially around options that are easy to mix up. These commands all edit the account files for you, which is safer than editing them by hand.

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