shell.sh

#!/bin/bash
device=$1
cmd=$2
username="username_on_device"

IDENTITY_FILE="/path/to/key"

case $cmd in

"shutdown") ssh $username@localhost -i $IDENTITY_FILE -p $device -At sudo shutdown -h now ;;
"reboot") ssh $username@localhost -i $IDENTITY_FILE -p $device -At sudo reboot ;;
"shell") ssh $username@localhost -i $IDENTITY_FILE -p $device ;;
"command") ssh $username@localhost -i $IDENTITY_FILE -p $device -At ${@:3} ;;
"push") scp -i $IDENTITY_FILE -P $device $3 $username@localhost:$4 ;;
"pull") scp -i $IDENTITY_FILE -P $device $username@localhost:$3 $4 ;;

"status") ssh $username@localhost -i $IDENTITY_FILE -p $device true > /dev/null 2>&1;
        if [ $? == 0 ]; then
         echo -e "\x1b[32;1m online \x1b[0m";
        else
         echo -e "\x1b[31;1m offline \x1b[0m";
        fi ;;
"watch") while true; do
        d=$(date)
        ssh $username@localhost -i $IDENTITY_FILE -p $device true > /dev/null 2>&1;
        if [ $? == 0 ]; then
         echo -e "$d\x1b[32;1m online \x1b[0m";
        else
         echo -e "$d\x1b[31;1m offline \x1b[0m";
        fi
        sleep 2s
        done;;
esac