clear.c 867 B

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  1. /* vi: set sw=4 ts=4: */
  2. /*
  3. * Mini clear implementation for busybox
  4. *
  5. * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  6. *
  7. * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  8. */
  9. //config:config CLEAR
  10. //config: bool "clear (tiny)"
  11. //config: default y
  12. //config: help
  13. //config: This program clears the terminal screen.
  14. //applet:IF_CLEAR(APPLET_NOFORK(clear, clear, BB_DIR_USR_BIN, BB_SUID_DROP, clear))
  15. //kbuild:lib-$(CONFIG_CLEAR) += clear.o
  16. //usage:#define clear_trivial_usage
  17. //usage: ""
  18. //usage:#define clear_full_usage "\n\n"
  19. //usage: "Clear screen"
  20. #include "libbb.h"
  21. #define ESC "\033"
  22. int clear_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  23. int clear_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
  24. {
  25. /* home; clear to the end of screen */
  26. return full_write1_str(ESC"[H" ESC"[J") != 6;
  27. }