After you setup your proxy, you can quickly enable it from a script using this: networksetup -setsocksfirewallproxystate Ethernet0 on And disable it using t

After you setup your proxy, you can quickly enable it from a script using this: networksetup -setsocksfirewallproxystate Ethernet0 on And disable it using this: networksetup -setsocksfirewallproxystate Ethernet0 off