11.23Srillig/* $NetBSD: echo.c,v 1.23 2021/11/16 21:38:29 rillig Exp $	*/
21.6Scgd
31.1Scgd/*
41.5Smycroft * Copyright (c) 1989, 1993
51.5Smycroft *	The Regents of the University of California.  All rights reserved.
61.1Scgd *
71.1Scgd * Redistribution and use in source and binary forms, with or without
81.1Scgd * modification, are permitted provided that the following conditions
91.1Scgd * are met:
101.1Scgd * 1. Redistributions of source code must retain the above copyright
111.1Scgd *    notice, this list of conditions and the following disclaimer.
121.1Scgd * 2. Redistributions in binary form must reproduce the above copyright
131.1Scgd *    notice, this list of conditions and the following disclaimer in the
141.1Scgd *    documentation and/or other materials provided with the distribution.
151.11Sagc * 3. Neither the name of the University nor the names of its contributors
161.1Scgd *    may be used to endorse or promote products derived from this software
171.1Scgd *    without specific prior written permission.
181.1Scgd *
191.1Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
201.1Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
211.1Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
221.1Scgd * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
231.1Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
241.1Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
251.1Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
261.1Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
271.1Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
281.1Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
291.1Scgd * SUCH DAMAGE.
301.1Scgd */
311.1Scgd
321.7Sthorpej#include <sys/cdefs.h>
331.7Sthorpej__COPYRIGHT(
341.17Slukem"@(#) Copyright (c) 1989, 1993\
351.17Slukem The Regents of the University of California.  All rights reserved.");
361.1Scgd
371.6Scgd#if 0
381.6Scgdstatic char sccsid[] = "@(#)echo.c	8.1 (Berkeley) 5/31/93";
391.6Scgd#else
401.23Srillig__RCSID("$NetBSD: echo.c,v 1.23 2021/11/16 21:38:29 rillig Exp $");
411.6Scgd#endif
421.1Scgd
431.20Skre#include <err.h>
441.16Schristos#include <locale.h>
451.21Srillig#include <stdbool.h>
461.1Scgd#include <stdio.h>
471.15Ssimonb#include <stdlib.h>
481.15Ssimonb#include <string.h>
491.10Sjschauma
501.8Scgd/* ARGSUSED */
511.5Smycroftint
521.9Swizmain(int argc, char *argv[])
531.1Scgd{
541.21Srillig	bool nflag;
551.1Scgd
561.16Schristos	setprogname(argv[0]);
571.16Schristos	(void)setlocale(LC_ALL, "");
581.16Schristos
591.1Scgd	/* This utility may NOT do getopt(3) option parsing. */
601.21Srillig	nflag = *++argv != NULL && strcmp(*argv, "-n") == 0;
611.21Srillig	if (nflag)
621.1Scgd		++argv;
631.1Scgd
641.21Srillig	while (*argv != NULL) {
651.12Sjschauma		(void)printf("%s", *argv);
661.21Srillig		if (*++argv != NULL)
671.8Scgd			(void)putchar(' ');
681.1Scgd	}
691.21Srillig	if (!nflag)
701.8Scgd		(void)putchar('\n');
711.23Srillig	(void)fflush(stdout);
721.23Srillig	if (ferror(stdout) != 0)
731.20Skre		err(1, "write error");
741.22Skre	return 0;
751.1Scgd}
76