cmd/echo.c

   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 <common.h>
   8 #include <command.h>
   9
  10 static int do_echo(struct cmd_tbl *cmdtp, int flag, int argc,
  11                    char *const argv[])
  12 {
  13         int i = 1;
  14         bool space = false;
  15         bool newline = true;
  16
  17         if (argc > 1) {
  18                 if (!strcmp(argv[1], "-n")) {
  19                         newline = false;
  20                         ++i;
  21                 }
  22         }
  23
  24         for (; i < argc; ++i) {
  25                 if (space) {
  26                         putc(' ');
  27                 }
  28                 puts(argv[i]);
  29                 space = true;
  30         }
  31
  32         if (newline)
  33                 putc('\n');
  34
  35         return 0;
  36 }
  37
  38 U_BOOT_CMD(
  39         echo, CONFIG_SYS_MAXARGS, 1, do_echo,
  40         "echo args to console",
  41         "[-n] [args..]\n"
  42         "    - echo args to console; -n suppresses newline"
  43 );