True Shutdown help! Post: 302073476

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LEARN ABOUT MINIX

utmp

UTMP(5) 							File Formats Manual							   UTMP(5)

NAME

       utmp, wtmp - logged in users, login and logout history

SYNOPSIS

       #include <sys/types.h>
       #include <utmp.h>

DESCRIPTION

       The files /etc/utmp and /usr/adm/wtmp respectively contain the currently logged in users, and the history of logins and logouts.

       Each file is an array of the following structure defined in <utmp.h>:

       struct utmp {
	    char	   ut_user[8];	  /* user name */
	    char	   ut_line[12];   /* terminal name */
	    char	   ut_host[16];   /* host name, when remote */
	    time_t	   ut_time;	  /* login/logout time */
       };

       #define ut_name ut_user/* for compatibility with other systems */

       The  structure  contains  more fields than those listed, but they are only of interest to init and login.  Note that the ut_name field is a
       compatibility alias for ut_user, it is actually better to use it.

       A login entry is completely specified.  A logout entry has a null string for ut_name.  A shutdown or reboot entry has an ut_line field con-
       taining	a  "~" (tilde).  The ut_name field is usually the name of the program that did the shutdown, or "reboot" at reboot.  This is a bit
       confusing, but note that there should always be two such entries.  If you see just one entry then the system has crashed, if  you  see  two
       entries then the system was properly shut down and later rebooted.

FILES

       /etc/utmp		Currently logged in users.

       /usr/adm/wtmp		History of logins and logouts.

SEE ALSO

       who(1), ttyslot(3).

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																	   UTMP(5)