# i have a raspberry pi. i want run ssh tunnel when system is starting
# i created script /usr/local/sbin/create_tunnel.sh

#!/bin/sh

/usr/bin/ssh -f -i /home/pi/.ssh/key.pem user@host -N -R 51151:localhost:5222

if [[ $? -eq 0 ]]; then
    echo "Tunnel to host created successfully"
else
    echo "An error occurred creating a tunnel to host. RC was $?"
fi


# changed "chmod +x" and added task to crontab
# crontab -e

@reboot /usr/local/sbin/create_tunnel.sh > /usr/local/sbin/tunnel.log

# after reboot i see in log:  An error occurred creating a tunnel to host. RC was 127 
# why?