Script to truncate wtmp files Post: 302903398

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utmpdump

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)

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