1.\" Copyright 1995, 1996, 1997 2.\" Guy Helmer, Ames, Iowa 50014. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer as 9.\" the first lines of this file unmodified. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. The name of the author may not be used to endorse or promote products 14.\" derived from this software without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY GUY HELMER ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL GUY HELMER BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/usr.sbin/adduser/rmuser.8,v 1.25 2006/12/05 23:20:14 ceri Exp $ 28.\" $DragonFly: src/usr.sbin/adduser/rmuser.8,v 1.5 2007/12/28 16:37:10 matthias Exp $ 29.\" 30.Dd May 10, 2002 31.Dt RMUSER 8 32.Os 33.Sh NAME 34.Nm rmuser 35.Nd remove users from the system 36.Sh SYNOPSIS 37.Nm 38.Op Fl yv 39.Op Fl f Ar file 40.Op Ar username ... 41.Sh DESCRIPTION 42The 43.Nm 44utility removes one or more users submitted on the command line 45or from a file. 46In removing a user from the system, this utility: 47.Bl -enum 48.It 49Removes the user's 50.Xr crontab 1 51entry (if any). 52.It 53Removes any 54.Xr at 1 55jobs belonging to the user. 56.It 57Sends a 58.Dv SIGKILL 59signal to all processes owned by the user. 60.It 61Removes the user from the system's local password file. 62.It 63Removes the user's home directory (if it is owned by the user), 64including handling of symbolic links in the path to the actual home 65directory. 66.It 67Removes the incoming mail and POP daemon mail files belonging to the 68user from 69.Pa /var/mail . 70.It 71Removes all files owned by the user from 72.Pa /tmp , /var/tmp , 73and 74.Pa /var/tmp/vi.recover . 75.It 76Removes the username from all groups to which it belongs in 77.Pa /etc/group . 78(If a group becomes empty and the group name is the same as the username, 79the group is removed; this complements 80.Xr adduser 8 Ns 's 81per-user unique groups.) 82.It 83Removes all message queues, shared memory segments and 84semaphores owned by the user. 85.El 86.Pp 87The 88.Nm 89utility refuses to remove users whose UID is 0 (typically root), since 90certain actions (namely, killing all the user's processes, and perhaps 91removing the user's home directory) would cause damage to a running system. 92If it is necessary to remove a user whose UID is 0, see 93.Xr vipw 8 94for information on directly editing the password file. 95.Pp 96If 97.Nm 98was not invoked with the 99.Fl y 100option, it will 101show the selected user's password file entry and ask for confirmation 102that the user be removed. 103It will then ask for confirmation to delete 104the user's home directory. 105If the answer is in the affirmative, the home 106directory and any files and subdirectories under it will be deleted only if 107they are owned by the user. 108See 109.Xr pw 8 110for more details. 111.Pp 112As 113.Nm 114operates, it informs the user regarding the current activity. 115If any 116errors occur, they are posted to standard error and, if it is possible for 117.Nm 118to continue, it will. 119.Pp 120The options are as follows: 121.Bl -tag -width ".Ar username" 122.It Fl f Ar file 123The 124.Nm 125utility will get a list of users to be removed from 126.Ar file , 127which will contain one user per line. 128Anything following a hash mark 129.Pq Ql # , 130including the hash mark itself, is considered a comment and will not 131be processed. 132If the file is owned by anyone other than a user with 133UID 0, or is writable by anyone other than the owner, 134.Nm 135will refuse to continue. 136.It Fl y 137Implicitly answer 138.Dq Li yes 139to any and all prompts. 140Currently, this includes 141prompts on whether to remove the specified user and whether to remove 142the home directory. 143This option requires that either the 144.Fl f 145option be used, or one or more user names be given as command line 146arguments. 147.It Fl v 148Enable verbose mode. 149Normally, 150the output includes one line per removed user; 151however, 152with this option 153.Nm 154will be much more chatty about the steps taken. 155.It Ar username 156Identifies one or more users to be removed; if not present, 157.Nm 158interactively asks for one or more users to be removed. 159.El 160.Sh FILES 161.Bl -tag -compact 162.It Pa /etc/master.passwd 163.It Pa /etc/passwd 164.It Pa /etc/group 165.It Pa /etc/spwd.db 166.It Pa /etc/pwd.db 167.El 168.Sh SEE ALSO 169.Xr at 1 , 170.Xr chpass 1 , 171.Xr crontab 1 , 172.Xr finger 1 , 173.Xr passwd 1 , 174.Xr group 5 , 175.Xr passwd 5 , 176.Xr adduser 8 , 177.Xr pw 8 , 178.Xr pwd_mkdb 8 , 179.Xr vipw 8 180.Sh HISTORY 181The 182.Nm 183utility appeared in 184.Fx 2.2 . 185.Sh BUGS 186The 187.Nm 188utility does not comprehensively search the file system for all files 189owned by the removed user and remove them; to do so on a system 190of any size is prohibitively slow and I/O intensive. 191It is also unable to remove symbolic links that were created by the 192user in 193.Pa /tmp 194or 195.Pa /var/tmp , 196as symbolic links on 197.Bx 4.4 198file systems do not contain information 199as to who created them. 200Also, there may be other files created in 201.Pa /var/mail 202other than 203.Pa /var/mail/ Ns Ar username 204and 205.Pa /var/mail/.pop. Ns Ar username 206that are not owned by the removed user but should be removed. 207.Pp 208The 209.Nm 210utility has no knowledge of YP/NIS, and it operates only on the 211local password file. 212