yes.c 1.3 KB

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  1. /* vi: set sw=4 ts=4: */
  2. /*
  3. * yes implementation for busybox
  4. *
  5. * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
  6. *
  7. * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  8. */
  9. /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
  10. *
  11. * Size reductions and removed redundant applet name prefix from error messages.
  12. */
  13. //config:config YES
  14. //config: bool "yes (1.2 kb)"
  15. //config: default y
  16. //config: help
  17. //config: yes is used to repeatedly output a specific string, or
  18. //config: the default string 'y'.
  19. //applet:IF_YES(APPLET_NOEXEC(yes, yes, BB_DIR_USR_BIN, BB_SUID_DROP, yes))
  20. /* was NOFORK, but then yes can't be ^C'ed if run by hush */
  21. //kbuild:lib-$(CONFIG_YES) += yes.o
  22. /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
  23. //usage:#define yes_trivial_usage
  24. //usage: "[STRING]"
  25. //usage:#define yes_full_usage "\n\n"
  26. //usage: "Repeatedly output a line with STRING, or 'y'"
  27. #include "libbb.h"
  28. int yes_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  29. int yes_main(int argc UNUSED_PARAM, char **argv)
  30. {
  31. char **pp;
  32. argv[0] = (char*)"y";
  33. if (argv[1])
  34. ++argv;
  35. do {
  36. pp = argv;
  37. while (1) {
  38. fputs(*pp, stdout);
  39. if (!*++pp)
  40. break;
  41. putchar(' ');
  42. }
  43. } while (putchar('\n') != EOF);
  44. bb_perror_nomsg_and_die();
  45. }