Script to install Zellij on Debian/Ubuntu without snap packages.

install_zellij.sh

#!/usr/bin/env bash

# derived from official installation script: https://zellij.dev/launch

dir="/usr/local/bin"

if [[ -x "$dir/zellij" ]]
then
    "$dir/zellij" "$@"
    exit
fi

case $(uname -m) in
    "x86_64"|"aarch64")
        arch=$(uname -m)
    ;;
    "arm64")
        arch="aarch64"
    ;;
    *)
        echo "Unsupported cpu arch: $(uname -m)"
        exit 2
    ;;
esac

case $(uname -s) in
    "Linux")
        sys="unknown-linux-musl"
    ;;
    "Darwin")
        sys="apple-darwin"
    ;;
    *)
        echo "Unsupported system: $(uname -s)"
        exit 2
    ;;
esac

url="https://github.com/zellij-org/zellij/releases/latest/download/zellij-$arch-$sys.tar.gz"
sudo bash -c "curl --location $url | tar -C $dir -xz"
if [[ $? -ne 0 ]]
then
    echo
    echo "Extracting binary failed, cannot launch zellij :("
    echo "One probable cause is that a new release just happened and the binary is currently building."
    echo "Maybe try again later? :)"
    exit 1
fi
"$dir/zellij" "$@"
exit

Install command (needs sudo, curl and bash preinstalled):

bash <(curl --proto '=https' --tlsv1.2 -sSfL https://gist.github.com/ferdinandkeller/26d23e6fec8ec2e80663fa2a327492ee/raw)

The script is derived from the official try script, but with the added install functionality, so that you can reuse it multiple times.