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f42904bc DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
13 | #ifndef lint | |
14 | static char sccsid[] = "@(#)whoami.c 5.1 (Berkeley) %G%"; | |
15 | #endif not lint | |
16 | ||
a309c47b BJ |
17 | #include <pwd.h> |
18 | /* | |
19 | * whoami | |
20 | */ | |
21 | struct passwd *getpwuid(); | |
22 | ||
23 | main() | |
24 | { | |
25 | register struct passwd *pp; | |
26 | ||
27e1d289 | 27 | pp = getpwuid(geteuid()); |
a309c47b BJ |
28 | if (pp == 0) { |
29 | printf("Intruder alert.\n"); | |
30 | exit(1); | |
31 | } | |
32 | printf("%s\n", pp->pw_name); | |
33 | exit(0); | |
34 | } |