Simple script that starts and stops GlobalProtect.app on Mac OSX.

global-protect.sh

#!/bin/bash

case $# in
   0)
      echo "Usage: $0 {start|stop}"
      exit 1
      ;;
   1)
      case $1 in
         start)
            echo "Starting GlobalProtect..."
            launchctl load /Library/LaunchAgents/com.paloaltonetworks.gp.pangpa.plist
            launchctl load /Library/LaunchAgents/com.paloaltonetworks.gp.pangps.plist
            echo "Done!"
            ;;
         stop)
            echo "Stopping GlobalProtect..."
            launchctl remove com.paloaltonetworks.gp.pangps
            launchctl remove com.paloaltonetworks.gp.pangpa
            echo "Done!"
            ;;
         *)
            echo "'$1' is not a valid verb."
            echo "Usage: $0 {start|stop}"
            exit 2
            ;;
      esac
      ;;
   *)
      echo "Too many args provided ($#)."
      echo "Usage: $0 {start|stop}"
      exit 3
      ;;
esac

This is a easier version that works for me in macOS Sonoma

vpn() {
    if [ "$1" = "stop" ]; then
        launchctl bootout gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangps.plist > /dev/null 2>&1
        launchctl bootout gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangpa.plist > /dev/null 2>&1
        echo "VPN unloaded"
    elif [ "$1" = "start" ]; then
        #statements
        launchctl bootstrap gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangps.plist
        launchctl bootstrap gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangpa.plist
        echo "VPN loaded"
    fi
}

I adapted the script to kill globalprotect icon in tray on stop and open globalprotect app when start :

# Add the function below to your .zsh_env or .bash_profile
# Usage : globalprotect start or globalprotect stop

globalprotect() {
    if [ "$1" = "stop" ]; then
        launchctl bootout gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangps.plist > /dev/null 2>&1
        launchctl bootout gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangpa.plist > /dev/null 2>&1
        PID="$(launchctl list | grep palo | cut -f 1)"

        # Kill the processes IDs only if found
        if [ ! -z "$PID" ]; then
                kill -9 $PID
        fi

        echo "VPN unloaded"
    elif [ "$1" = "start" ]; then
        launchctl bootstrap gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangps.plist
        launchctl bootstrap gui/$(id -u) /Library/LaunchAgents/com.paloaltonetworks.gp.pangpa.plist
        open -a /Applications/GlobalProtect.app
        echo "VPN loaded"
    fi
}