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Linux 2.6 - man page for chkwtmp (linux section 1)

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CHKWTMP(1)									       CHKWTMP(1)

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...

7th Edition				 Thu Oct 12 1994			       CHKWTMP(1)
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