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Well, right off the bat, there is no program named cls.com or cls.exe out there. It's a command built into the shell, cmd.exe.
--bibo UPDATE My point is this: system and spawn and fork and their tickish brethern will launch a new process. Those new command windows could clean their own screens with cls, but you cannot clear the screen of the currently running command window by starting a new process. is this helping? In reply to Re: why doesn't my system('cls') work?
by bibo
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