centos man page for utmpdump

UTMPDUMP(1)						       System Administration						       UTMPDUMP(1)

NAME
       utmpdump - dump UTMP and WTMP files in raw format

SYNOPSIS
       utmpdump [-frh] [ filename ]

DESCRIPTION
       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 file-
       name is passed.

OPTIONS
       -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.

NOTES
       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.

BUGS
       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.

AUTHOR
       Michael Krapp

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

AVAILABILITY
       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)