php - Use AT command in shell script

Question

I'm using gsm modem to send sms, via a terminal there's no problem but i want to write a shell script (called by php) and i want to know how insert AT command in.

Example :

• call the script.sh
• the script open minicom (sudo..)
• type : AT+CMGS="num" + ENTER + "Message" + ctrl+Z and send the sms to the num.

Thank you Victor

Answer 1

For the time being¹ I think your best option here is to use the programming language expect. It is written to monitor growing text output and support scenarios like

1. Wait for the string "Username:" to appear in the output.
2. Send the string "my_name".
3. Wait for the string "Password:" to appear in the output.
4. Send the string "my_secret_password".

Sending AT command and waiting for the response is very similar, so this is absolutely doable. When I worked at Ericsson we had a test suite written in expect that sent AT commands and parsed log files to run tests.

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¹ As a companion to my atinout program, I have started to write a program to send the command AT+CMGS and its payload correctly. But unless you are very, very patient you should not wait for this to be finished.