userdel - plik chroniony informacji o użytkownikach
The userdel command modifies the system account files,
deleting all entries that refer to the user name LOGIN. The named
user must exist.
The options which apply to the userdel command are:
This option forces the removal of the user account, even
if the user is still logged in. It also forces userdel
to remove the
user's home directory and mail spool, even if another user uses the same home
directory or if the mail spool is not owned by the specified user. If
is defined to yes
in /etc/login.defs and if a
group exists with the same name as the deleted user, then this group will be
removed, even if it is still the primary group of another user.
Note: This option is dangerous and may leave your system in
an inconsistent state.
Wyświetlenie komunikatu pomocy i
Files in the user's home directory will be removed along
with the home directory itself and the user's mail spool. Files located in
other file systems will have to be searched for and deleted manually.
The mail spool is defined by the MAIL_DIR variable in the
-R, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use
the configuration files from the CHROOT_DIR directory. Only absolute
paths are supported.
-P, --prefix PREFIX_DIR
Apply changes in the PREFIX_DIR directory and use
the configuration files from the PREFIX_DIR directory. This option does
not chroot and is intended for preparing a cross-compilation target. Some
limitations: NIS and LDAP users/groups are not verified. PAM authentication is
using the host files. No SELINUX support.
Remove any SELinux user mapping for the user's
The following configuration variables in /etc/login.defs change
the behavior of this tool:
Informacje o grupach użytkowników.
Konfiguracja pakietu shadow.
Informacja o kontach użytkowników.
Informacje chronione o użytkownikach.
Run-part files to execute during user deletion. The
environment variable ACTION will be populated with userdel and
SUBJECT with the username. userdel-pre.d will be executed prior to any
user deletion. userdel-post.d will execute after user deletion. If a script
exits non-zero then execution will terminate.
Per user subordinate group IDs.
Per user subordinate user IDs.
The userdel command exits with the following values:
can't update password file
invalid command syntax
specified user doesn't exist
user currently logged in
can't update group file
can't remove home directory
userdel will not allow you to remove an account if there
are running processes which belong to this account. In that case, you may
have to kill those processes or lock the user's password or account and
remove the account later. The -f option can force the deletion of
You should manually check all file systems to ensure that no files
remain owned by this user.
You may not remove any NIS attributes on a NIS client. This must
be performed on the NIS server.
If USERGROUPS_ENAB is defined to yes in
/etc/login.defs, userdel will delete the group with the same name as
the user. To avoid inconsistencies in the passwd and group databases,
userdel will check that this group is not used as a primary group for
another user, and will just warn without deleting the group otherwise. The
-f option can force the deletion of this group.
chfn(1), chsh(1), passwd(1),
login.defs(5), gpasswd(8), groupadd(8),
groupdel(8), groupmod(8), subgid(5), subuid(5),