open/close ssh tunnel

ssh_tunnel.sh

#!/bin/bash

[ $# -eq 0 ] && {
    echo "Usage: $0 [run|kill]"
    exit 0
}

[ "$1" == "run" ] && {
    ssh -NfD 8888 <SERVERIP>
    echo start ssh tunneling via my server over socks proxy
    exit 0
}

[ "$1" == "kill" ] && {
    pid_of_existing_tunnel=$(ps -ef | grep "ssh -NfD 8888" | grep -v grep | awk '{print $2}')
    if [ "$pid_of_existing_tunnel" != "" ]; then
        echo killing process $pid_of_existing_tunnel...
        kill $pid_of_existing_tunnel
    else
        echo No existing tunnel to kill.
    fi
}