echo.c 686 B

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