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UPDATE-PASSWD(8)					      UPDATE-PASSWD(8)

NAME
       update-passwd - safely update /etc/passwd, /etc/shadow and /etc/group

SYNOPSIS
       update-passwd [options]

DESCRIPTION
       update-passwd   handles	 updates   of	/etc/passwd,  /etc/shadow  and
       /etc/group on running Debian systems.  It compares the current files to
       master  copies, distributed in the base-passwd package, and updates all
       entries in the global system range (that is, 0–99).

OPTIONS
       update-passwd follows the usual GNU  command  line  syntax,  with  long
       options starting with two dashes (‘-’).

       -p, --passwd-master=FILE
	      Use FILE as the master copy of the passwd database.  The default
	      value is /usr/share/base-passwd/passwd.master.

       -g, --group-master=FILE
	      Use FILE as the master copy of the group database.  The  default
	      value is /usr/share/base-passwd/group.master.

       -P, --passwd=FILE
	      Use  FILE	 as  the system passwd database.  The default value is
	      /etc/passwd.

       -S, --shadow=FILE
	      Use FILE as the system shadow database.  The  default  value  is
	      /etc/shadow.

       -G, --group=FILE
	      Use  FILE	 as  the  system group database.  The default value is
	      /etc/group.

       -s, --sanity-check
	      Only perform sanity-checks but don't do anything.

       -v, --verbose
	      Give detailed information about what we are doing.  A second  -v
	      gives additional detail.

       -n, --dry-run
	      Don't do anything but only show what we would do.

       -L, --no-locking
	      Don't attempt to lock the account database.  This should only be
	      used for debugging purposes.  I repeat: do not  do  this	unless
	      you are really sure you need this!

       -h, --help
	      Show a summary of how to use update-passwd.

       -V, --version
	      Show the version number

ENVIRONMENT
       DEBIAN_HAS_FRONTEND
	      If  this environment variable is sent and the --dry-run flag was
	      not given, update-passwd uses debconf to prompt for  whether  to
	      make  changes.   Each  proposed  change  will produce a separate
	      prompt.  User or group removals, UID or GID  changes,  and  home
	      directory	 changes  will	be  asked with high priority.  User or
	      group additions and shell changes will be asked with medium pri‐
	      ority.   Questions  about	 whether to move entries above the NIS
	      compat inclusion entry or whether to change the GECOS of a  user
	      are asked at low priority.

BUGS
       At  this	 moment	 update-passwd	does  not  verify the shadow-file.  It
       should check if the entries in the passwd are also in shadow  and  vice
       versa, and that passwords are not present in both files.

AUTHOR
       Wichert Akkerman <wakkerma@debian.org>

       This  program  was  written  for	 the  Debian project, and is copyright
       1999–2002 Wichert Akkerman and copyright 2002, 2003 Colin  Watson.   It
       is distributed under version 2 of the GNU General Public License.

DEBIAN				 Debian tools		      UPDATE-PASSWD(8)
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