Provided by: chkrootkit_0.49-4ubuntu1_amd64 bug

NAME

       chkwtmp - check wtmp-file for deleted entries

SYNOPSIS

       chkwtmp

DESCRIPTION

       Chkwtmp  examines  the file /var/log/wtmp for entries with no information (containing only
       null-bytes). If such entries are found the program prints the time window for the original
       entry.  This  is  done by displaying the timestamps of the wtmp-entry before and after the
       deleted entry.

       To run chkwtmp you need read permission on the file /var/log/wtmp.  Normally this file  is
       world-readable and no special privileges are required to run the checker.

FILES

       /var/log/wtmp       login data base

SEE ALSO

       wtmp(4), who(1)

LIMITATIONS

       An  entry  is  recognized as overwritten if the time-information has been overwritten with
       null-bytes.

       This program was designed to run on SunOS 4.x systems only. On other systems the output is
       undefined...