hush: if we did match "LINENO" or "OPTIND", stop further comparisons
[oweals/busybox.git] / coreutils / whoami.c
1 /* vi: set sw=4 ts=4: */
2 /*
3  * Mini whoami implementation for busybox
4  *
5  * Copyright (C) 2000  Edward Betts <edward@debian.org>.
6  *
7  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
8  */
9 //config:config WHOAMI
10 //config:       bool "whoami (2.9 kb)"
11 //config:       default y
12 //config:       help
13 //config:       whoami is used to print the username of the current
14 //config:       user id (same as id -un).
15
16 //applet:IF_WHOAMI(APPLET_NOFORK(whoami, whoami, BB_DIR_USR_BIN, BB_SUID_DROP, whoami))
17
18 //kbuild:lib-$(CONFIG_WHOAMI) += whoami.o
19
20 /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
21
22 //usage:#define whoami_trivial_usage
23 //usage:       ""
24 //usage:#define whoami_full_usage "\n\n"
25 //usage:       "Print the user name associated with the current effective user id"
26
27 #include "libbb.h"
28
29 int whoami_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
30 int whoami_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
31 {
32         if (argv[1])
33                 bb_show_usage();
34
35         /* Will complain and die if username not found */
36         puts(xuid2uname(geteuid()));
37
38         return fflush_all();
39 }