Install cmatrix to be executed randomly after a clear command run

install_cmatrix.sh

#!/usr/bin/env bash
# reference: https://adammusciano.com/2020/03/04/2020-03-04-clear-your-terminal-in-style/

## INSTALL GUIDE
## * 1 single line to dowload & run the installation script:
## brew install python || yum install -y python-pip || apt install -f python-pip && pip install getgist && cd /tmp && getgist adjogahm /tmp/install_cmatrix.sh && bash /tmp/install_cmatrix.sh && cd - && clear 


if [ -f "${HOME}/.bash_aliases" ]; then
	FILE="${HOME}/.bash_aliases"
elif [ -f "${HOME}/.bashrc" ]; then
	FILE="${HOME}/.bashrc"
elif [ -f "${HOME}/.bash_profile" ]; then
	FILE="${HOME}/.bash_profile"
fi

set -e
unameOut=$(uname -s)
case ${unameOut} in
	Darwin*)    MACHINE=darwin;;
	Linux*)     MACHINE=linux;;
	*)          MACHINE="UNKNOWN:${unameOut}";;
esac

if [[ ${MACHINE} == "darwin" ]]; then
  	brew install cmatrix
	sudo cat >> "${FILE}" <<EOF1

alias clear='[ $[$RANDOM % 20] = 0 ] && timeout 3 cmatrix; clear || clear'

EOF1
elif [[ ${MACHINE} == "linux" ]]; then
	[[ -n "$(command -v yum)" ]] && MACHINE=redhat
	[[ -n "$(command -v apt-get)" ]] && MACHINE=debian
	sudo cat >> "${FILE}" <<EOF1

alias clear='[ $[$RANDOM % 20] = 0 ] && timeout 3 cmatrix; clear || clear'

EOF1
	if [[ ${MACHINE} == "redhat" ]]; then
		yum install -y gcc make autoconf automake ncurses-devel
		git clone https://github.com/abishekvashok/cmatrix.git
		cd cmatrix
		autoreconf -i # skip if using released tarball
		./configure
		make
		make install
		rm -rf cmatrix install_cmatrix.sh
	elif [[ ${MACHINE} == "debian" ]]; then
		apt-get install -f cmatrix
	fi
else
	echo -e "\nOS unsupported!" && exit 1
fi