Install openconnect client on macos

openconnect_client_on_mac.sh

#!/bin/bash

find_or_install() {
    # Check if brew package $1 is installed
    # http://stackoverflow.com/a/20802425/1573477
    if brew ls --versions $1 > /dev/null; then
        echo "Installing ${1}"
        brew install $1
    else
        echo "${1} is already installed."
    fi
}

if [ "$(uname -s)" != "Darwin" ]; then
    echo "This script is for OSX"
    echo "Exiting..."
    exit 1
fi

# Check if xcode commandline tools are installed.
# http://apple.stackexchange.com/a/219508
if type xcode-select >&- && xpath=$( xcode-select --print-path ) &&
       test -d "${xpath}" && test -x "${xpath}" ; then
    xcode-select --install
else
    echo "Xcode command line tools are available."
fi

# Install or update brew
which -s brew
if [[ $? != 0 ]] ; then
    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
else
    echo "Homebrew is available. Updating..."
    brew update
fi

find_or_install openconnect
find_or_install caskroom/cask/brew-cask
find_or_install tuntap