fork/redirecting a (specifically the cu) process?

[Dj_Jestar]

I'm trying to run an automated script that uses the cu command (call-up)
However, it requires terminal interaction, which is making life difficult.

Is there a way, to perhaps form the cu command, then attach it to something like a dummy terminal and send it string as if I were typing the keys myself on the keyboard.. then fetch the resulting string.

 

[leezer3]

Do I presume you know precisely what the script is going to want in terms of answers 100% of the time, or is it something more vague where an answer is needed depending on preceding conditions?

Any chance of seeing what you've got to do- I'm surprised you can't just add what you need to do as command parameters.

-Leezer-

 

[Dj_Jestar]

I need to open the cu command on a given port, the script will look something like:

#!/bin/bash
exec 5<cu -e -o -s 115200 -l /dev/ttyUSB0 # this line will obviously fail
echo -en "AT+CIMI\r" > 5
echo "~." > 5
while 0<&5 read line
do
    // blah
done
exit 0

 

[Sp!ke]

Have you tried expect ?

 

[Dj_Jestar]

Will give it a go when back in the office on Monday, thanks.

 

[Solaris]

Yeah I was gonna suggest expect. Its a pretty good tool for this type of stuff.

 

[Dj_Jestar]

It is good, it works great.

Though I just need to bring the file systems up before udev handles events on boot, so that it can use my script for the modems

 

[Sp!ke]

It is good, it works great.

Though I just need to bring the file systems up before udev handles events on boot, so that it can use my script for the modems

Glad it worked out Expect's manual gives me headaches sometimes but it's a very usefull tool. (Autoexpect gets me out of bother occasionally to)

~S