/* Copyright (c) 1979 Regents of the University of California */ #include <retrofit.h> #include <pwd.h> /* * whoami */ struct passwd *getpwuid(); main() { register struct passwd *pp; pp = getpwuid(getuid()); if (pp == 0) { printf("Intruder alert.\n"); exit(1); } printf("%s\n", pp->pw_name); exit(0); }