1 /* $OpenBSD: echo.c,v 1.4 1997/09/01 18:29:26 deraadt Exp $ */ 2 /* $NetBSD: echo.c,v 1.6 1995/03/21 09:04:27 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1989, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)echo.c 8.1 (Berkeley) 5/31/93"; 46 #else 47 static char rcsid[] = "$OpenBSD: echo.c,v 1.4 1997/09/01 18:29:26 deraadt Exp $"; 48 #endif 49 #endif /* not lint */ 50 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 /* ARGSUSED */ 56 int 57 main(argc, argv) 58 int argc; 59 char *argv[]; 60 { 61 int nflag; 62 63 /* This utility may NOT do getopt(3) option parsing. */ 64 if (*++argv && !strcmp(*argv, "-n")) { 65 ++argv; 66 nflag = 1; 67 } 68 else 69 nflag = 0; 70 71 while (*argv) { 72 (void)fputs(*argv, stdout); 73 if (*++argv) 74 putchar(' '); 75 } 76 if (!nflag) 77 putchar('\n'); 78 79 return 0; 80 } 81