OSX + proxy config on the comandline

I find that I'm working on networks with and without a proxy. And have been pointing and clicking to enable disable the socks proxy. Had a quick google and found this beautiful little command : 

• sudo networksetup  -setsocksfirewallproxystate Wi-Fi off
• sudo networksetup  -setsocksfirewallproxy Wi-Fi localhost 20000
• sudo networksetup  -setsocksfirewallproxystate Wi-Fi on

My small script (added as a bash function in .bash_profile)
proxy () {
    case $1 in
        on)
            ssh -fN proxy-init
            sudo networksetup  -setsocksfirewallproxy Wi-Fi localhost 20000
            sudo networksetup  -setsocksfirewallproxystate Wi-Fi on
            ;;
        off)
            sudo networksetup  -setsocksfirewallproxystate Wi-Fi off
            ps -ef | awk '/ssh -fN uio-init/ && !/awk/ {print $2}' | xargs kill
            ;;
   esac
}


PS : the ssh commands are used to initialise some ports via ssh. proxy-init is a ssh "makro"  defined in my ~/.ssh/config file. 

It looks like almost like this : 

Host uio-init
User ragnahon
ControlMaster yes
ControlPath /tmp/.watershed_ssh_session
DynamicForward 127.0.0.1:20000
LocalForward 127.0.0.1:3389 a-rdp.server.at.my.company.com:3389
ProxyCommand ssh  -qax myusername@login.company.com 'nc -X 5 -w 60000 my.server.company.com 22'