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 <command.h>
   8
   9 static 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
  37 U_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 );