#include <stdio.h>
#include <stdlib.h>
#include <pwd.h>

// finduser.c - finds a user on the local system
//
// desc: A small c app to find a local user in /etc/passwd
//
// copyright: 2002 by Sebastian Wolfgarten, sebastian@wolfgarten.com
//
// usage: finduser <username>
//
// compile: gcc finduser.c -o finduser, copy to /usr/bin

int main(int argc, char *argv[]) {

    struct passwd *pointer_auf_passwd;
    
    if (argc != 2) {
    
	printf("Benutzung: %s suchstring\n",argv[0]);
	exit(-1);    
    
    }
    
    setpwent();
    
    while ((pointer_auf_passwd=getpwent()) != NULL) {
    
	if (strstr(pointer_auf_passwd->pw_name,argv[1]) || strstr(pointer_auf_passwd->pw_gecos,argv[1])) {
	
	    printf("Username: %s, Home: %s, Shell: %s, Userid: %d, Gruppenid: %d\n",pointer_auf_passwd->pw_name,pointer_auf_passwd->pw_dir,pointer_auf_passwd->pw_shell,pointer_auf_passwd->pw_uid,pointer_auf_passwd->pw_gid);
	
	}
	
    }
    
    endpwent();
    
}