osxprep.sh

#!/usr/bin/env bash

# Ask for the administrator password upfront
sudo -v

# Keep-alive: update existing `sudo` time stamp until `osxprep.sh` has finished
while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &

# Step 1: Update the OS and Install Xcode Tools
echo "------------------------------"
echo "Updating OSX.  If this requires a restart, run the script again."
# Install all available updates
sudo softwareupdate -ia --verbose
# Install only recommended available updates
#sudo softwareupdate -ir --verbose

echo "------------------------------"
echo "Installing Xcode Command Line Tools."
# Install Xcode command line tools
xcode-select --install