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From: tinguely@plains.NoDak.edu (Mark Tinguely)
Subject: Re: FreeBSD: /var/log/lastlog ?
Sender: usenet@ns1.nodak.edu (Usenet login)
Message-ID: <CL811r.nqw@ns1.nodak.edu>
Date: Mon, 14 Feb 1994 15:44:15 GMT
References: <2jfp0a$aop@pdq.coe.montana.edu> <1994Feb11.235107.16781@emba.uvm.edu> <CL60rF.53G@jester.GUN.de>
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Organization: North Dakota State University
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In article <CL60rF.53G@jester.GUN.de> michael@jester.GUN.de (Michael Gerhards) writes:
>
>Hm, then something is wrong with it. My /var/adm/lastlog was ~ 960 KB
>big. And my system has ~ 10 users !
>
an entry is made for ALL UIDs whether they are used or not. here is a program
to look at your entries:
===== looklastlog.c =====
#include <sys/types.h>
#include <utmp.h>
#include <sys/fcntl.h>
#include <time.h>
#include <pwd.h>
main()
{
struct passwd *pwd;
struct lastlog last;
int i, fd;
fd = open ("/var/log/lastlog",O_RDONLY);
for (i=0; read(fd, &last, sizeof(last)) > 0; i++)
if (pwd = getpwuid(i))
printf("%s %s %s %s\n",pwd->pw_name,ctime(&last.ll_time), last.ll_line,last.ll_host);
else
printf("%d %s %s %s\n",i,ctime(&last.ll_time), last.ll_line,last.ll_host);
}