Install [Zellij](https://zellij.dev/) multiplexer

install_zellij

#!/bin/env bash

if [ "$EUID" -ne 0 ]; then
  echo "Installing system-wide apps requires sudo privileges.  Do you have any?"
  exit 1
fi

# Create a temporary directory
temp_dir=$(mktemp -d)

# Clean up the temporary directory
cleanup() {
  rm -rf "$temp_dir"
  echo "Temporary directory deleted: $temp_dir"
}

# Register the cleanup function to be executed on script termination
trap cleanup EXIT

# Download and install zellij
cd $temp_dir
wget https://github.com/zellij-org/zellij/releases/download/v0.39.2/zellij-x86_64-unknown-linux-musl.tar.gz
tar -xvf zellij*.tar.gz
cp zellij /usr/local/bin