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3.6. Additional Resources
See the following resources for more information about managing users and groups.
3.6.1. Installed Documentation
For information about various utilities for managing users and groups, see the following manual pages:
- chage(1) — A command to modify password aging policies and account expiration.
- gpasswd(1) — A command to administer the
/etc/groupfile. - groupadd(8) — A command to add groups.
- grpck(8) — A command to verify the
/etc/groupfile. - groupdel(8) — A command to remove groups.
- groupmod(8) — A command to modify group membership.
- pwck(8) — A command to verify the
/etc/passwdand/etc/shadowfiles. - pwconv(8) — A tool to convert standard passwords to shadow passwords.
- pwunconv(8) — A tool to convert shadow passwords to standard passwords.
- useradd(8) — A command to add users.
- userdel(8) — A command to remove users.
- usermod(8) — A command to modify users.
For information about related configuration files, see:
- group(5) — The file containing group information for the system.
- passwd(5) — The file containing user information for the system.
- shadow(5) — The file containing passwords and account expiration information for the system.
- login.defs(5) - The file containing shadow password suite configuration.
- useradd(8) - For
/etc/default/useradd, section “Changing the default values” in manual page.
