User Tools

Site Tools


docs:guide-user:advanced:sms-from-shell

Send SMS from Shell

Sending SMS can be accomplish via shell with AT commands, thus we can automated sending SMS with shell script.
Ref: Send SMS using AT commands

Using AT commands from shell

Just using shell you can send SMS, I think any modem would work altough I can't verify it because I don't have much modem lying around. By using AT commands, basic modem functionality will be utilized, so no need 3G driver and functionality.

Basically, sequence for send SMS as below:

# determine device modem, we use /dev/ttyUSB0 for this example
echo -e "ATZ\r" >/dev/ttyUSB0 # we need echo parameter -e for interpretation of backslash escapes
echo -e "AT+CMGF=1\r" >/dev/ttyUSB0
echo -e "AT+CMGS=\"123456789\"" >/dev/ttyUSB0 # change 123456789 with SMS destination number
echo -e "Hello this is SMS message from shell\x1A" >/dev/ttyUSB0 # message must be ending with \x1A (ASCII for CTRL+Z)

That's it, SMS should be recieve shortly.

Script for sending SMS

Because SMS can sent from shell, if need it we can automating this process with shell script. Below is a sample to send SMS with shell script:

#!/bin/sh
 
# Modem device
DEV=/dev/ttyUSB0
# Destination mumber
DESTNUM="123456789"
# Message
SMS="Hi, there"
 
# we need to put sleep 1 to slow down commands for modem to process
echo -e "ATZ\r" >$DEV
sleep 1
echo -e "AT+CMGF=1\r" >$DEV
sleep 1
echo -e "AT+CMGS=\"$DESTNUM\"\r" >$DEV
sleep 1
echo -e "$SMS\x1A" >$DEV
This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.More information about cookies
docs/guide-user/advanced/sms-from-shell.txt · Last modified: 2018/03/03 20:13 by bobafetthotmail