1 
2 /*
3  * Copyright (C) Igor Sysoev
4  * Copyright (C) NGINX, Inc.
5  *
6  * A portable "echo" program that supports "-n" option:
7  *     echo Hello world!
8  *     echo "Hello world!"
9  *     echo -n Hello world!
10  *     echo
11  *
12  * It also passes "\c" characters as is.
13  */
14 
15 
16 #include <stdio.h>
17 #include <string.h>
18 
19 
20 int
main(int argc,char * const * argv)21 main(int argc, char *const *argv)
22 {
23     int  i = 1;
24     int  nl = 1;
25 
26     if (argc > 1) {
27         if (strcmp(argv[1], "-n") == 0) {
28             nl = 0;
29             i++;
30         }
31 
32         while (i < argc) {
33             printf("%s%s", argv[i], (i == argc - 1) ? "" : " ");
34             i++;
35         }
36     }
37 
38     if (nl) {
39         printf("\n");
40     }
41 
42     return 0;
43 }
44