Install Tp-Link wn821n rtl8192eu driver on GNU/Linux

tp-link-tl-wn821n-rtl8192eu-install.sh

#!/bin/bash

check_root() {
	if [ $UID -ne 0 ]; then
		echo "ERROR: run as root"
		exit 1
	fi
}

install_packages() {
	apt -y install git linux-headers-amd64 build-essential dkms
}

install_driver() {
	mkdir -p /usr/local/src
	cd /usr/local/src
	if [ ! -d rtl8192eu-linux-driver ]; then
		git clone https://github.com/Mange/rtl8192eu-linux-driver
	fi
	cd rtl8192eu-linux-driver
	sed -i 's/REMAKE_INITRD="yes"/#REMAKE_INITRD="yes"/g' dkms.conf
	dkms add .
	dkms install rtl8192eu/1.0
	if [ ! -f /etc/modprobe.d/rtl8xxxu.conf ]; then
		echo "blacklist rtl8xxxu" | sudo tee /etc/modprobe.d/rtl8xxxu.conf
	fi
}

install() {
	install_packages
	install_driver
}

uninstall() {
	dkms uninstall rtl8192eu/1.0
	dkms remove rtl8192eu/1.0
	rm -rf /usr/local/src/rtl8192eu-linux-driver
	rm -f /etc/modprobe.d/rtl8xxxu.conf
}

main() {
	check_root

	if [ "$1" == "--uninstall" ]; then
		uninstall
	else
		install
	fi

	dkms status

	echo -e "\nDone. Reboot your computer.\n"

	exit 0
}

main "$@"