Re: printout sending control codes to the console?

[Jerry Feldman <gaf@xxxxxxx>]

On 02/24/2009 07:53 PM, Konstantin Svist wrote:
> I have a script which prints out some data to the terminal, which I keep
> in a screen session.
> Often times I see indecipherable characters printed out and the output
> freezes - I'm guessing some control code is being triggered from the
> printout.
> Is there a way to prevent this?
>
>
>   
ASCII contains a number of control codes. One of these is XOFF (stop 
output or control-S) and another is XON (resume output or control Q). 
Basically the C function isprint(3) tests if a character is printable 
(in C). I'm sure there are similar functions available to Perl and other 
scripting languages. Or you can simply test the value of a character. If 
it is < 0x20 it is a control character.

--
Jerry Feldman <gaf@xxxxxxx>
Boston Linux and Unix
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