root/usr/src/ucbcmd/whoami/whoami.c
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
#include <locale.h>
#include <stdlib.h>

#define MSG     "whoami: no login associated with uid %u.\n"

/*
 * whoami
 */

int
main(int argc, char *argv[])
/*ARGSUSED*/
{
        struct passwd *pp;
        uid_t   euid;

        /* Set locale environment variables local definitions */
        (void) setlocale(LC_ALL, "");
#if     !defined(TEXT_DOMAIN)   /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST"  /* Use this only if it wasn't */
#endif
        (void) textdomain(TEXT_DOMAIN);

        euid = geteuid();
        pp = getpwuid(euid);
        if (pp == 0) {
                (void) printf(gettext(MSG), euid);
                exit(1);
        }
        (void) printf("%s\n", pp->pw_name);
        return (0);
}