A simple shell script to quickly / easily install "pacaur" on archlinux (enhanced)

install_pacaur.sh

#!/bin/sh

# If you are new to arch, I encourage you to at least read and understand what
# this script does befor blindley running it.
# That's why I didn't make a one-liner out of it so you have an easier time
# reading and understanding it :)
#
# This scripts purpose is purly to save you a few seconds on your new installation.
#
# Enjoy your time on an awesome system. Arch FTW!
# 
# -----------------------------------------------
# Fork 
# Original Script: https://gist.githubusercontent.com/Tadly/0e65d30f279a34c33e9b/raw/pacaur_install.sh
# Adds check for pacaur already installed and force option

# Run the following from a terminal to install pacaur:
# $ curl -s https://gist.githubusercontent.com/rubendibattista/7d0c061024b88267732455dd60c4a397/raw/install_pacaur.sh | bash

# Check if pacaur is already installed

function install_pacaur {

	# Make sure our shiny new arch is up-to-date
	echo "Checking for system updates..."
	sudo pacman -Syu

	# Create a tmp-working-dir an navigate into it
	mkdir -p /tmp/pacaur_install
	cd /tmp/pacaur_install

	# If you didn't install the "base-devil" group,
	# we'll need those.
	sudo pacman -S binutils make gcc fakeroot --noconfirm

	# Install pacaur dependencies from arch repos
	sudo pacman -S expac yajl git --noconfirm

	# Install "cower" from AUR
	curl -o PKGBUILD https://aur.archlinux.org/cgit/aur.git/plain/PKGBUILD?h=cower
	makepkg PKGBUILD --skippgpcheck
	sudo pacman -U cower*.tar.xz --noconfirm

	# Install "pacaur" from AUR
	curl -o PKGBUILD https://aur.archlinux.org/cgit/aur.git/plain/PKGBUILD?h=pacaur
	makepkg PKGBUILD
	sudo pacman -U pacaur*.tar.xz --noconfirm

	# Clean up...
	cd ~
	rm -r /tmp/pacaur_install
}

help='Use -f flag to force install'

# Check for -f (force option) or -h (help option)
while getopts "fh" opt; do
	case $opt in 
		f) force=true;;
		h) echo $help;;
		\?) echo $help 
		    exit 1 ;;
	esac
done



if [[ -z $(pacman -Q | grep pacaur) || $force == true  ]]; then

	install_pacaur


else
	echo 'Pacaur is already installed'
	echo 'If you want to force install use the `-f` option'

fi