UTMPDUMP(1) Linux System Administrator's Manual UTMPDUMP(1)NAMEutmpdump - dump UTMP and WTMP files in raw format
SYNOPSISutmpdump [-froh] filename
DESCRIPTIONutmpdump 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 ALSOlast(1), w(1), who(1), utmp(5),
Februar 8, 2010 UTMPDUMP(1)