/*
- * Copyright (c) 1980, 1987 Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1980, 1987, 1993
+ * The Regents of the University of California. All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement: ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*/
#ifndef lint
-char copyright[] =
-"@(#) Copyright (c) 1980, 1987 Regents of the University of California.\n\
- All rights reserved.\n";
+static char copyright[] =
+"@(#) Copyright (c) 1980, 1987, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
-static char sccsid[] = "@(#)users.c 5.9 (Berkeley) 6/1/90";
+static char sccsid[] = "@(#)users.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include <sys/types.h>
-#include <errno.h>
#include <utmp.h>
#include <stdio.h>
#define MAXUSERS 200
-main()
+main(argc, argv)
+ int argc;
+ char **argv;
{
+ extern int optind;
register int cnt, ncnt;
struct utmp utmp;
char names[MAXUSERS][UT_NAMESIZE];
- int scmp();
+ int ch, scmp();
+
+ while ((ch = getopt(argc, argv, "")) != EOF)
+ switch(ch) {
+ case '?':
+ default:
+ (void)fprintf(stderr, "usage: users\n");
+ exit(1);
+ }
+ argc -= optind;
+ argv += optind;
if (!freopen(_PATH_UTMP, "r", stdin)) {
(void)fprintf(stderr, "users: can't open %s.\n", _PATH_UTMP);
if (ncnt) {
qsort(names, ncnt, UT_NAMESIZE, scmp);
- (void)printf("%s", names[0]);
- for (cnt = 1; cnt < ncnt; ++cnt) {
- while (cnt < ncnt - 1 &&
- !strncmp(names[cnt], names[cnt + 1], UT_NAMESIZE))
- ++cnt;
- (void)printf(" %.*s", UT_NAMESIZE, names[cnt]);
- }
+ (void)printf("%.*s", UT_NAMESIZE, names[0]);
+ for (cnt = 1; cnt < ncnt; ++cnt)
+ if (strncmp(names[cnt], names[cnt - 1], UT_NAMESIZE))
+ (void)printf(" %.*s", UT_NAMESIZE, names[cnt]);
(void)printf("\n");
}
exit(0);
scmp(p, q)
char *p, *q;
{
- return(strcmp(p, q));
+ return(strncmp(p, q, UT_NAMESIZE));
}