mjhjmtu

I would like to launch a ssh reverse tunnel on system launch.
The following line let's me establish the tunnel fine - but I end up being logged into server which I don't want, especially not from an init script.

/usr/bin/autossh -M 22222 -o "PubkeyAuthentication=yes" -o "PasswordAuthentication=no" -i /path/to/my/key.key -R 9999:localhost:22 ubuntu@server

man autossh says that the -f option should do what I need:

causes autossh to drop to the background before running ssh.

but the problem is, it doesn't seem to work when I change my command to usr/bin/autossh -f -M.... I've tried this out as part of my init script too which looks like:

#! /bin/sh
### BEGIN INIT INFO
### END INIT INFO
case "$1" in
 start)
 echo "Starting autossh"
 /usr/bin/autossh -M 22222 -o "PubkeyAuthentication=yes" -o "PasswordAuthentication=no" -i /work/cloudparc/docs/EtherWan/etherwan.key -R 9999:localhost:22 ubuntu@cloudtunnel.hopto.org
 ;;
 stop)
 echo -n "Shutting down utossk"
 /usr/bin/killall -KILL autossh
 ;;
 *)
 echo "Usage: $0 stop"
 exit 1
esac
exit 0

But I need an option to throw it in the background, how do I do this if the -f option doesn't work for me?