UTMPDUMP(1)           Linux System Administrator's Manual          UTMPDUMP(1)



NAME
       utmpdump - dump UTMP and WTMP files in raw format

SYNOPSIS
       utmpdump [-froh] filename

DESCRIPTION
       utmpdump is a simple program to dump UTMP and WTMP files in raw format,
       so they can be examined.

OPTIONS
       -f     output appended data as the file grows.

       -r     reverse. Write back edited login information into utmp or wtmp
              files.

       -o     use old libc5 format.

       -h     usage information.

       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),



                                Februar 8, 2010                    UTMPDUMP(1)