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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7#include <command.h>
8
9static int do_echo(struct cmd_tbl *cmdtp, int flag, int argc,
10 char *const argv[])
11{
12 int i = 1;
13 bool space = false;
14 bool newline = true;
15
16 if (argc > 1) {
17 if (!strcmp(argv[1], "-n")) {
18 newline = false;
19 ++i;
20 }
21 }
22
23 for (; i < argc; ++i) {
24 if (space) {
25 putc(' ');
26 }
27 puts(argv[i]);
28 space = true;
29 }
30
31 if (newline)
32 putc('\n');
33
34 return 0;
35}
36
37U_BOOT_CMD(
38 echo, CONFIG_SYS_MAXARGS, 1, do_echo,
39 "echo args to console",
40 "[-n] [args..]\n"
41 " - echo args to console; -n suppresses newline"
42);