Terminal control/Clear the screen

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< Terminal control
Revision as of 01:40, 19 October 2010 by MikeMol (talk | contribs) (Apply the Terminal Control semantic property, as a task.)
Task
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

Forth

<lang forth>page</lang>

<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>

PureBasic

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

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