| 1 | #include <pwd.h> |
| 2 | /* |
| 3 | * whoami |
| 4 | */ |
| 5 | struct passwd *getpwuid(); |
| 6 | |
| 7 | main() |
| 8 | { |
| 9 | register struct passwd *pp; |
| 10 | |
| 11 | pp = getpwuid(getuid()); |
| 12 | if (pp == 0) { |
| 13 | printf("Intruder alert.\n"); |
| 14 | exit(1); |
| 15 | } |
| 16 | printf("%s\n", pp->pw_name); |
| 17 | exit(0); |
| 18 | } |