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
<lang qbasic>CLS</lang>
Batch File
CLS
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 based J ide (currently, the Qt based J ide in the version 7 beta does not support this mechanism, nor does the browser based J ide in the version 7 beta, and historically J has had several other implementations that do not support this mechanism).
<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
To clear the screen on windows, replace 'clear' with 'cls'
<lang python> import os os.system('clear') </lang>
Retro
<lang Retro>clear</lang>
header
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:
<lang bash>clear</lang>