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UTMPDUMP(1)			      System Administration			      UTMPDUMP(1)

       utmpdump - dump UTMP and WTMP files in raw format

       utmpdump [-frh] [ 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, --follow
	      Output appended data as the file grows.

       -r, --reverse
	      Undump, write back edited login information into utmp or wtmp files.

       -h, --help
	      Print a help text and exit.

       -V, --version
	      Output 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 rein-
       tegrated, 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.

       Michael Krapp

       last(1), w(1), who(1), utmp(5)

       The  utmpdump command is part of the util-linux package and is available from Linux Kernel
       Archive <ftp://ftp.kernel.org/pub/linux/utils/util-linux/>.

util-linux				    July 2012				      UTMPDUMP(1)
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