4.4. Additional Resources

For more information on how to manage users and groups on Red Hat Enterprise Linux, see the resources listed below.

Installed Documentation

For information about various utilities for managing users and groups, see the following manual pages:
  • useradd(8) — The manual page for the useradd command documents how to use it to create new users.
  • userdel(8) — The manual page for the userdel command documents how to use it to delete users.
  • usermod(8) — The manual page for the usermod command documents how to use it to modify users.
  • groupadd(8) — The manual page for the groupadd command documents how to use it to create new groups.
  • groupdel(8) — The manual page for the groupdel command documents how to use it to delete groups.
  • groupmod(8) — The manual page for the groupmod command documents how to use it to modify group membership.
  • gpasswd(1) — The manual page for the gpasswd command documents how to manage the /etc/group file.
  • grpck(8) — The manual page for the grpck command documents how to use it to verify the integrity of the /etc/group file.
  • pwck(8) — The manual page for the pwck command documents how to use it to verify the integrity of the /etc/passwd and /etc/shadow files.
  • pwconv(8) — The manual page for the pwconv, pwunconv, grpconv, and grpunconv commands documents how to convert shadowed information for passwords and groups.
  • id(1) — The manual page for the id command documents how to display user and group IDs.
  • umask(2) — The manual page for the umask command documents how to work with the file mode creation mask.
For information about related configuration files, see:
  • group(5) — The manual page for the /etc/group file documents how to use this file to define system groups.
  • passwd(5) — The manual page for the /etc/passwd file documents how to use this file to define user information.
  • shadow(5) — The manual page for the /etc/shadow file documents how to use this file to set passwords and account expiration information for the system.

Online Documentation

  • Red Hat Enterprise Linux 7 Security Guide — The Security Guide for Red Hat Enterprise Linux 7 provides additional information how to ensure password security and secure the workstation by enabling password aging and user account locking.

See Also