by Rui Cast » Tue, 23 Oct 2001 19:33:43
I'm programming in C on a Red Hat 6.2 system and I'd like to know how
can I read a single character from the keyboard without waiting for
the RETURN key? I'd also like to know how can I stop characters from
being echoed to the stdout when they're typed?
Thanks for the answer,
Rui
by Josef M?ller » Tue, 23 Oct 2001 21:12:54
> Hi,
> I'm programming in C on a Red Hat 6.2 system and I'd like to know how
> can I read a single character from the keyboard without waiting for
> the RETURN key? I'd also like to know how can I stop characters from
> being echoed to the stdout when they're typed?
--
Josef M?llers (Pinguinpfleger bei FSC)
If failure had no penalty success would not be a prize
-- T. Pratchett
by Morris Dove » Tue, 23 Oct 2001 22:40:16
Consider buying W. Richard Stevens' "Advanced Programming in the UNIX
Environment".
Download http://www.iedu.com/mrd/c/getch.c
--
Morris Dovey
West Des Moines, Iowa USA
Yes, you must tell your terminal not to echo characters.
stty -help
[...]
[-]echo echo input characters
[...]
Then, you can inclose your reading command between a "stty -echo" and a "stty
echo" as in :
stty -echo ; read var ; stty echo
or
stty -echo ; cat > file ; stty echo
The same can be done with other shells.
--
Stephane
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