[ILUG] Bash question - serial port

[P at draigBrady.com]

newboid at vodafone.ie wrote:
> Hi,
> 
> I am quite new to linux and I was wondering if there is a way to get a string 
> from a serial port from the shell?
> 
> I have tried using:
> 
> cat < /dev/ttyS0
> 
> and I can see the string from the  serial port, but I don't seen to see a 
> way of  terminating the cat command to get at the data.
> 
> I looked at C and it seems a bit complex for what I want to do.

If you know exactly how much data there will be you could do:

dd if=/dev/ttyS0 bs=1 count=$number_of_bytes

If it's line oriented data then I suppose you could do:

while read /dev/ttyS0
   echo received: $REPLY
done

-- 
Pádraig Brady - http://www.pixelbeat.org
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