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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)echo.c 8.1 (Berkeley) 5/31/93 31 * $FreeBSD: src/bin/echo/echo.c,v 1.8.2.1 2001/08/01 02:33:32 obrien Exp $ 32 * $DragonFly: src/bin/echo/echo.c,v 1.8 2005/02/03 22:03:31 joerg Exp $ 33 */ 34 #include <sys/types.h> 35 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 40 /* ARGSUSED */ 41 int 42 main(int argc __unused, char **argv) 43 { 44 int nflag = 0; 45 46 /* This utility may NOT do getopt(3) option parsing. */ 47 if (*++argv && !strcmp(*argv, "-n")) { 48 ++argv; 49 nflag = 1; 50 } 51 52 while (argv[0]) { 53 size_t len = strlen(argv[0]); 54 55 if (len >= 2 && !argv[1] && argv[0][len - 2] == '\\' && argv[0][len - 1] == 'c') { 56 argv[0][len - 2] = '\0'; 57 nflag = 1; 58 } 59 printf("%s", argv[0]); 60 if (*++argv) 61 putchar(' '); 62 } 63 if (!nflag) 64 putchar('\n'); 65 66 exit(0); 67 } 68