clear the screen!!!

coldfusion · 11-22-2003, 04:21 PM

Code:

printf("%c%c%c%c%c%c",27,'[','H',27,'[','J' );

i think an easier way than this (but essentially the same thing) is:

Code:

printf("\e[H\e[J");

but, to each his own.

shishir · 11-23-2003, 11:58 PM

this works beacuse these are terminal escape sequences....

if you were to do a clear > myclearfile
and try to more that file...
you'd see these characers...
the moment this string appears on the terminal...anywhere...
the terminal is cleared...

LogicG8 · 11-24-2003, 09:07 AM

Superficially it works b/c it is defined by an ANSI standard.
There are other escape sequences defined that perform
other useful operations. They all work on terminals that are
ANSI compliant like DOS (if you have ansi.sys) and linux. The
real "why" of it working changes from platform to platform
mostly at a hardware level.

See:
http://astronomy.swin.edu.au/~pbourk...mats/ansi.html

Avatar33 · 11-24-2003, 07:27 PM

Aaaah I See. Thanks a lot. I wish all messages answered the "why". It helps in many situations to know why. Thanks again.