Terminal control/Clear the screen

Terminal control/Clear the screen
You are encouraged to solve this task according to the task description, using any language you may know.

Clear the terminal window.

AWK

<lang awk>system("clear")</lang>

BASIC

Works with: QBasic

Works with: Locomotive Basic

Works with: ZX Spectrum Basic

<lang qbasic>CLS</lang>

Batch File

CLS

C

The C version of the minesweeper game uses curses. Minesweeper_game#C If perhaps clear screen isn't used, call the function cls <lang C> void cls(void) {

 int printf(char*,...);
 printf("%c[2J",27);

} </lang> to do the trick.

C#

<lang csharp>System.Console.Clear();</lang>

Forth

<lang forth>page</lang>

Logo

<lang logo>cleartext</lang> There is a separate command to reset the turtle graphics window. <lang logo>clearscreen cs  ; abbreviation for clearscreen clean  ; like cs, but doesn't reset turtle position</lang>

J

Note: this is specific the java+gdi based J ide.

<lang j>smwrite_jijs_ </lang>

Lua

<lang lua>os.execute( "clear" )</lang>

PicoLisp

<lang PicoLisp>(call 'clear)</lang>

PureBasic

Clears the whole console content using the current background color. <lang PureBasic>ClearConsole()</lang>

Python

Works with: Python version 2.6

Works with: Ubuntu version 10.10

To clear the screen on windows, replace 'clear' with 'cls'

<lang python> import os os.system('clear') </lang>

Retro

<lang Retro>clear</lang>

REXX

The REXX programming language does not include a facility to clear the screen. However, it is possile to execute an external system command to achieve this task:

'clear'

There are also various workarounds which are platform specific:

regina

The regina interpreter supports the rexxcurses plugin, which provides the facility to clear the screen:

Tcl

This only works on systems with ANSI terminal handling, i.e., Unix platforms. <lang tcl>puts -nonewline "\033\[2J" flush stdout</lang>

UNIX Shell

The clear command can be used to clear the terminal screen:

Works with: Bourne Shell

<lang bash>clear</lang>