Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!rpi!julius.cs.uiuc.edu!ux1.cso.uiuc.edu!tundra
From: tundra@ux1.cso.uiuc.edu (John Kemp)
Newsgroups: comp.sys.hp
Subject: GETUTENT /ETC/UTMP NOT WORKING(?)
Message-ID: <1990Sep17.172858.29044@ux1.cso.uiuc.edu>
Date: 17 Sep 90 17:28:58 GMT
Sender: tundra@ux1.cso.uiuc.edu (John Kemp)
Organization: University of Illinois at Urbana
Lines: 59


Is this a bug or am I doing something stupid?

How does one go about scanning the list of currently
logged in users?  I thought "getutent" as the way to
do it.  Unfortunately, this call produces garbage in 
the "ut_user" and "ut_line" fields.

Any suggestions?
(Test program and output listed below)

--------  john kemp            (  (  )_  internet - kemp@uiatma.atmos.uiuc.edu
  -----                       (  (   __)   decnet - uiatmb::kemp
   ---    univ of illinois   (_ (   __)    bitnet - {uunet,convex}
   --     dept of atmos sci  .(____).               !uiucuxc!uiatma!kemp
   -      105 s gregory ave    ...          phone - (217) 333-6881
    -     urbana, il 61801    ...             fax - (217) 444-4393

********************
SAMPLE PROGRAM
********************

/*
 * Print out /etc/utmp records.
 */
#include <stdio.h>
#include <sys/types.h>
#include <utmp.h>
struct utmp *ut;
main()
{
        utmpname("/etc/utmp");
        setutent();
        while ( (ut = getutent()) != NULL ) {
                fprintf(stderr,"user: %8c \n",ut->ut_user);
                fprintf(stderr,"id:   %4c \n",ut->ut_id);
                fprintf(stderr,"line: %12c\n",ut->ut_line);
                fprintf(stderr,"pid:  %d  \n",ut->ut_pid);
                fprintf(stderr,"type: %d  \n",ut->ut_type);
                fprintf(stderr,"host: %16c\n",ut->ut_host);
        }
}

********************
OUTPUT:
********************
user:        8
id:      @
line:            D
pid:  0
type: 2
host:                `
user:        8
id:      @
line:            D
pid:  0
type: 1
host:                `
Add Nauseum with PID's incresing and so on...