Apple Mac: Display, Enable, Disable SOCKS Proxy via the commandline

# List all network interfaces on my Mac

```
$ networksetup -listallnetworkservices
An asterisk (*) denotes that a network service is disabled.
Display Ethernet
Thunderbolt Ethernet
Wi-Fi
Display FireWire
Bluetooth PAN
Thunderbolt Bridge
```

# View state of SOCKS proxy for an interface
```
$ networksetup -getsocksfirewallproxy "Display Ethernet" 
Enabled: No
Server: 
Port: 0
Authenticated Proxy Enabled: 0
$ 
```

# Enable the SOCKS proxy for an interface
```
$ networksetup -setsocksfirewallproxystate "Display Ethernet" on
$ networksetup -getsocksfirewallproxy "Display Ethernet" 
Enabled: Yes
Server: on
Port: 0
Authenticated Proxy Enabled: 0
$ 
```

# When testing a SOCKS proxy on a Mac, do this to unload/reload the .pac file.
# Unloading and reloading the .pac file through the Mac GUI can be a pain. 
```
$ networksetup -setsocksfirewallproxystate "Display Ethernet" off
$ networksetup -getsocksfirewallproxy "Display Ethernet" 
Enabled: No
Server: on
Port: 0
Authenticated Proxy Enabled: 0
$ networksetup -setsocksfirewallproxystate "Display Ethernet" on
$ networksetup -getsocksfirewallproxy "Display Ethernet" 
Enabled: Yes
Server: on
Port: 0
Authenticated Proxy Enabled: 0
$ 
```

# List the status of all services
```
$ networksetup -listallnetworkservices | grep -v 'denotes that a network service is disabled.' | while read SERVICE
do
  echo "### $SERVICE"
  networksetup -getsocksfirewallproxy "$SERVICE"
done
### Display Ethernet
Enabled: Yes
Server: on
Port: 0
Authenticated Proxy Enabled: 0
### Thunderbolt Ethernet
Enabled: Yes
Server: on
Port: 0
...
```