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

/*
 * uinfo.c -- get user information from the system
 *
 */

int main ( int argc, char *argv[] )
{
   char *username;
   struct passwd *pwd;

   if ( argc != 2 ) {
      printf("Usage: %s username\n", argv[0]);
      exit(-1);
   }

   username = argv[1];
 
   // get user information
   pwd = getpwnam(username);

   if ( pwd == NULL ) {
      printf("User %s does no seem to exist.\n", username);
      exit(1);
   }

   // print user information
   printf("user name: %s\n", pwd->pw_name);
   printf("user   id: %d\n", pwd->pw_uid);
   printf("group  id: %d\n", pwd->pw_gid);
   printf("user info: %s\n", pwd->pw_gecos);
   printf("home  dir: %s\n", pwd->pw_dir);
   printf("def shell: %s\n", pwd->pw_shell);

   return 0;
}