/* * Lookup a user by name */ #include <stdio.h> #include <pwd.h> #include <sys/types.h> int main(int argc, char **argv) { struct passwd *pw; /* Check args */ if (argc != 2) { printf("ERROR: no arg specified\n"); exit(1); } /* Do getpwnam() */ if ((pw = getpwnam(argv[1])) == NULL) { printf("FAIL: user %s does not exist\n", argv[1]); exit(1); } printf("PASS: user %s exists\n", argv[1]); printf("pw_name = %s\n", pw->pw_name); printf("pw_passwd = %s\n", pw->pw_passwd); printf("pw_uid = %d\n", pw->pw_uid); printf("pw_gid = %d\n", pw->pw_gid); printf("pw_gecos = %s\n", pw->pw_gecos); printf("pw_dir = %s\n", pw->pw_dir); printf("pw_shell = %s\n", pw->pw_shell); exit(0); }