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utmpdump — dump UTMP and WTMP files in raw format
utmpdump [−frohV] [filename]
utmpdump is
a simple program to dump UTMP and WTMP files in raw format,
so they can be examined. utmpdump eads from stdin
unless a filename is
passed.
−f, −−followOutput appended data as the file grows.
−r, −−reverseUndump, write back edited login information into utmp or wtmp files.
−o, −−output fileWrite command output to file instead of standard output.
−h, −−helpDisplay help text and exit.
−V, −−versionDisplay version information and exit.
utmpdump can be useful in cases of corrupted utmp or wtmp entries. It can dump out utmp/wtmp to an ASCII file, then that file can be edited to remove bogus entries and reintegrated, using
utmpdump -r < ascii_file > wtmp
but be warned as utmpdump was written for debugging purpose only.
You may not use the option −r as the format for the utmp/wtmp
files strongly depends on the input format. This tool was not
written for normal use but for debugging.
The utmpdump command is part of the util-linux package and is available from Linux Kernel Archive
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-*- coding: UTF-8 -*- Copyright (C) 2010 Michael Krapp This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |