Quickly toggle HTTP(S) proxy on Mac OS X from command line

proxy

#!/bin/sh

SERVICE="Ethernet" # or "Wi-Fi"
PROXY_HOST="127.0.0.1"
PROXY_PORT="8888"

while [[ $# > 0 ]]
do
  case "$1" in
    on)
      networksetup -setwebproxystate $SERVICE on
      networksetup -setwebproxy $SERVICE $PROXY_HOST $PROXY_PORT off
      networksetup -setsecurewebproxystate $SERVICE on
      networksetup -setsecurewebproxy $SERVICE $PROXY_HOST $PROXY_PORT off
      echo 'Web proxy is on'
    shift
    ;;
    off)
      networksetup -setwebproxystate $SERVICE off
      networksetup -setsecurewebproxystate $SERVICE off
      echo 'Web proxy is off'
    shift
    ;;
  esac
done

Find the SERVICE using networksetup -listallnetworkservices command:

➜  sh networksetup -listallnetworkservices
An asterisk (*) denotes that a network service is disabled.
USB 10/100/1000 LAN
Wi-Fi
Bluetooth PAN
Thunderbolt Bridge

and I think it's safer to add quotes around $SERVICE in case the name contains spaces:

#!/bin/sh

SERVICE="Ethernet" # or "Wi-Fi"
PROXY_HOST="127.0.0.1"
PROXY_PORT="8888"

while [[ $# > 0 ]]
do
  case "$1" in
    on)
      networksetup -setwebproxystate "$SERVICE" on
      networksetup -setwebproxy "$SERVICE" $PROXY_HOST $PROXY_PORT off
      networksetup -setsecurewebproxystate "$SERVICE" on
      networksetup -setsecurewebproxy "$SERVICE" $PROXY_HOST $PROXY_PORT off
      echo 'Web proxy is on'
    shift
    ;;
    off)
      networksetup -setwebproxystate "$SERVICE" off
      networksetup -setsecurewebproxystate "$SERVICE" off
      echo 'Web proxy is off'
    shift
    ;;
  esac
done

Did you check to see if this works with the external usb ethernet adaptor that's listed above (USB 10/100/1000 LAN)? Assuming the web proxy is turned on for the usb ethernet adaptor, if i then perform the following in terminal:

networksetup -setwebproxystate "USB 10/100/1000 LAN" off

Then check the usb ethernet adaptor it doesn't turn off the web proxy. I'm running osx v12.6.3.