/*
 isuser.c - Checks for a user in the system
 Copyright (C) 2005 Nils Hulsch

 WWW: www.cash-area.de

 Installation?
 gcc -o isuser isuser.c

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include <stdio.h>
#include <sys/types.h>
#include <pwd.h>

int main(argc,argv)
int argc;
char **argv;
{
	struct passwd *pw;
	if (!argv[1])
	{
		printf("Usage: %s <username>\n",argv[0]);
		exit(2);
	}
	pw=getpwnam(argv[1]);
	if (!pw)
	{
		printf("User %s doesn't exist\n",argv[1]);
		exit(1);
	} 
	printf("User %s exist and has the UID %i\n",argv[1],pw->pw_uid);
	exit(0);
}