logoff ghost user Post: 4375

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Top Forums UNIX for Dummies Questions & Answers logoff ghost user Post 4375 by Optimus_P on Tuesday 24th of July 2001 04:14:34 PM

07-24-2001

Registered User

for sakes of argument if you do a "w" and get the list of users loged in (which reflects from /var/adm/wtmp) and you noticed that there are no process running you can just wipe out that file but in that process you would also lose anyinfo for anyone logged in. you can also use the last command to see if it is actually still logged in (if it is it should most deffinetly have a PID.)

if it is showing up it has to have a pid zommbied or not.

Code:

man last

The last  command looks in the  /var/adm/wtmpx  file,  which
     records  all  logins  and  logouts,  for information about a
     user, a terminal, or  any  group  of  users  and  terminals.
     Arguments  specify  names of users or terminals of interest.

man utmp
The utmp database file contains user access  and  accounting
     information  for  commands  such  as  who(1),  write(1), and
     login(1). The wtmp file contains the history of user  access
     and accounting information for the  utmp database. The data-
     base contained in these files can be manipulated  using  the
     getutent() family of functions.  Entries in the database are
     described  by  the  definitions  and  data   structures   in
     <utmp.h>. See getutent(3C).

please correct me if i am wrong.

Optimus_P

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LEARN ABOUT REDHAT

wtmpx

utmpx(4)							   File Formats 							  utmpx(4)

NAME

       utmpx, wtmpx - utmpx and wtmpx database entry formats

SYNOPSIS

       #include <utmpx.h>
       /var/adm/utmpx
       /var/adm/wtmpx

DESCRIPTION

       The utmpx and wtmpx files are extended database files that have superseded the obsolete utmp and wtmp database files.

       The  utmpx database contains user access and accounting information for commands such as who(1), write(1), and login(1). The wtmpx database
       contains the history of user access and accounting information for the  utmpx database.

USAGE

       Applications should not access these databases directly, but should use the functions described on the getutxent(3C) manual page to  inter-
       act with the utmpx and wtmpx databases to ensure that they are maintained consistently.

FILES

       /var/adm/utmpx	       user access and adminstration information

       /var/adm/wtmpx	       history of user access and adminstrative information

SEE ALSO

       getutxent(3C), wait(3C)wait.h(3HEAD)

SunOS 5.10							    22 Feb 1999 							  utmpx(4)

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