211 lines
5.7 KiB
Groff
211 lines
5.7 KiB
Groff
.\" Copyright 1995, 1996, 1997
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.\" Guy Helmer, Ames, Iowa 50014. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer as
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.\" the first lines of this file unmodified.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY GUY HELMER ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL GUY HELMER BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 10, 2002
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.Dt RMUSER 8
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.Os
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.Sh NAME
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.Nm rmuser
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.Nd remove users from the system
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.Sh SYNOPSIS
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.Nm
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.Op Fl yv
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.Op Fl f Ar file
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.Op Ar username ...
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.Sh DESCRIPTION
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The
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.Nm
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utility removes one or more users submitted on the command line
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or from a file.
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In removing a user from the system, this utility:
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.Bl -enum
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.It
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Removes the user's
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.Xr crontab 1
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entry (if any).
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.It
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Removes any
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.Xr at 1
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jobs belonging to the user.
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.It
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Sends a
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.Dv SIGKILL
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signal to all processes owned by the user.
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.It
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Removes the user from the system's local password file.
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.It
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Removes the user's home directory (if it is owned by the user),
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including handling of symbolic links in the path to the actual home
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directory.
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.It
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Removes the incoming mail and POP daemon mail files belonging to the
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user from
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.Pa /var/mail .
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.It
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Removes all files owned by the user from
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.Pa /tmp , /var/tmp ,
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and
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.Pa /var/tmp/vi.recover .
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.It
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Removes the username from all groups to which it belongs in
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.Pa /etc/group .
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(If a group becomes empty and the group name is the same as the username,
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the group is removed; this complements
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.Xr adduser 8 Ns 's
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per-user unique groups.)
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.It
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Removes all message queues, shared memory segments and
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semaphores owned by the user.
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.El
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.Pp
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The
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.Nm
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utility refuses to remove users whose UID is 0 (typically root), since
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certain actions (namely, killing all the user's processes, and perhaps
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removing the user's home directory) would cause damage to a running system.
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If it is necessary to remove a user whose UID is 0, see
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.Xr vipw 8
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for information on directly editing the password file.
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.Pp
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If
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.Nm
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was not invoked with the
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.Fl y
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option, it will
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show the selected user's password file entry and ask for confirmation
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that the user be removed.
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It will then ask for confirmation to delete
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the user's home directory.
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If the answer is in the affirmative, the home
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directory and any files and subdirectories under it will be deleted only if
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they are owned by the user.
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See
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.Xr pw 8
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for more details.
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.Pp
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As
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.Nm
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operates, it informs the user regarding the current activity.
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If any
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errors occur, they are posted to standard error and, if it is possible for
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.Nm
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to continue, it will.
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.Pp
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The options are as follows:
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.Bl -tag -width ".Ar username"
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.It Fl f Ar file
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The
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.Nm
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utility will get a list of users to be removed from
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.Ar file ,
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which will contain one user per line.
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Anything following a hash mark
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.Pq Ql # ,
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including the hash mark itself, is considered a comment and will not
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be processed.
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If the file is owned by anyone other than a user with
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UID 0, or is writeable by anyone other than the owner,
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.Nm
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will refuse to continue.
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.It Fl y
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Implicitly answer
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.Dq Li yes
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to any and all prompts.
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Currently, this includes
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prompts on whether to remove the specified user and whether to remove
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the home directory.
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This option requires that either the
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.Fl f
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option be used, or one or more user names be given as command line
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arguments.
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.It Fl v
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Enable verbose mode.
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Normally,
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the output inlcudes one line per removed user;
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however,
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with this option
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.Nm
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will be much more chatty about the steps taken.
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.It Ar username
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Identifies one or more users to be removed; if not present,
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.Nm
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interactively asks for one or more users to be removed.
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.El
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.Sh FILES
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.Bl -tag -compact
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.It Pa /etc/master.passwd
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.It Pa /etc/passwd
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.It Pa /etc/group
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.It Pa /etc/spwd.db
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.It Pa /etc/pwd.db
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.El
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.Sh SEE ALSO
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.Xr at 1 ,
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.Xr chpass 1 ,
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.Xr crontab 1 ,
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.Xr finger 1 ,
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.Xr passwd 1 ,
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.Xr group 5 ,
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.Xr passwd 5 ,
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.Xr adduser 8 ,
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.Xr pw 8 ,
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.Xr pwd_mkdb 8 ,
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.Xr vipw 8
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.Sh HISTORY
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The
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.Nm
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utility appeared in
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.Fx 2.2 .
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.Sh BUGS
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The
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.Nm
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utility does not comprehensively search the file system for all files
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owned by the removed user and remove them; to do so on a system
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of any size is prohibitively slow and I/O intensive.
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It is also unable to remove symbolic links that were created by the
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user in
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.Pa /tmp
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or
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.Pa /var/tmp ,
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as symbolic links on
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.Bx 4.4
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file systems do not contain information
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as to who created them.
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Also, there may be other files created in
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.Pa /var/mail
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other than
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.Pa /var/mail/ Ns Ar username
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and
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.Pa /var/mail/.pop. Ns Ar username
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that are not owned by the removed user but should be removed.
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.Pp
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The
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.Nm
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utility has no knowledge of YP/NIS, and it operates only on the
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local password file.
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