1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)echo.c 8.1 (Berkeley) 5/31/93 35 * $FreeBSD: src/bin/echo/echo.c,v 1.8.2.1 2001/08/01 02:33:32 obrien Exp $ 36 * $DragonFly: src/bin/echo/echo.c,v 1.2 2003/06/17 04:22:49 dillon Exp $ 37 */ 38 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 int main __P((int, char *[])); 44 45 int 46 main(argc, argv) 47 int argc __unused; 48 char *argv[]; 49 { 50 int nflag; 51 52 /* This utility may NOT do getopt(3) option parsing. */ 53 if (*++argv && !strcmp(*argv, "-n")) { 54 ++argv; 55 nflag = 1; 56 } 57 else 58 nflag = 0; 59 60 while (argv[0]) { 61 int len = strlen(argv[0]); 62 63 if (len >= 2 && !argv[1] && argv[0][len - 2] == '\\' && argv[0][len - 1] == 'c') { 64 argv[0][len - 2] = '\0'; 65 nflag = 1; 66 } 67 (void)printf("%s", argv[0]); 68 if (*++argv) 69 putchar(' '); 70 } 71 if (!nflag) 72 putchar('\n'); 73 exit(0); 74 } 75