I am echoing an AT command to a modem interface (
/dev/ttyUSB3) and the command runs successfully.
For instance the below command works and has an output of
echo -e "ATZ\r" > /dev/ttyUSB3
I can see this by having another terminal with
cat /dev/ttyUSB3 active.
How do I, instead of using
cat (eg use one command to send a command and get output back), redirect the output
OK to a variable or file so that I can process data returned from the modem?