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	whoami.c - sbase - suckless unix tools
	git clone git://git.suckless.org/sbase
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	---
	whoami.c (582B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <errno.h>
	3 #include <stdio.h>
	4 #include <unistd.h>
	5 #include <pwd.h>
	6
	7 #include "util.h"
	8
	9 static void
	10 usage(void)
	11 {
	12 eprintf("usage: %s\n", argv0);
	13 }
	14
	15 int
	16 main(int argc, char *argv[])
	17 {
	18 uid_t uid;
	19 struct passwd *pw;
	20
	21 argv0 = argv, argv0 ? (argc--, argv++) : (void )0;
	22
	23 if (argc)
	24 usage();
	25
	26 uid = geteuid();
	27 errno = 0;
	28 if (!(pw = getpwuid(uid))) {
	29 if (errno)
	30 eprintf("getpwuid %d:", uid);
	31 else
	32 eprintf("getpwuid %d: no such user\n", uid);
	33 }
	34 puts(pw->pw_name);
	35
	36 return fshut(stdout, "<stdout>");
	37 }