#!/bin/bash # /etc/init.d/sim800c case "$1" in start) echo "AT+CFUN=1,1" > /dev/ttyS3 echo "AT+IPR=115200" > /dev/ttyS3 pon sim800c ;; stop) poff sim800c # sleep 3 # echo "+++" > /dev/ttyS3 # sleep 3 echo "AT+CFUN=1,1" > /dev/ttyS3 ;; restart|reload) $0 stop $0 start ;; *) echo "Usage: $0 {start|stop|restart}" exit 1 esac exit 0