Bash function to toggle work proxy on or off on Mac OS X

gistfile1.sh

#
# "Wi-Fi" is the name of your internet service.  View your OS X
# network settings to see a list of your services.
#
work-proxy () {
    if [ "$1" == 'off' ]; then
        networksetup -setsocksfirewallproxystate "Wi-Fi" off
        kill $(ps aux | grep '[s]sh -Nf -D 7070 [email protected]' | awk '{print $2}')
    else
        ssh -Nf -D 7070 [email protected]
        networksetup -setsocksfirewallproxy "Wi-Fi" 127.0.0.1 7070
    fi
}