getpwuid.c

   1 #include <stdio.h>
   2 #include <pwd.h>
   3 #include <sys/types.h>
   4
   5 static void print_passwd(struct passwd *pwd)
   6 {
   7         printf("%s:%s:%d:%d:%s:%s:%s\n",
   8                pwd->pw_name,
   9                pwd->pw_passwd,
  10                pwd->pw_uid,
  11                pwd->pw_gid,
  12                pwd->pw_gecos,
  13                pwd->pw_dir,
  14                pwd->pw_shell);
  15 }
  16
  17 int main(int argc, char *argv[])
  18 {
  19         struct passwd *pwd;
  20
  21         pwd = getpwuid(atoi(argv[1]));
  22
  23         if (!pwd) {
  24                 printf("Failed to fetch pwd\n");
  25         } else {
  26                 print_passwd(pwd);
  27         }
  28         return 0;
  29 }