Zellij Install Script

install-zellij.sh

#!/bin/sh

# Copyright (c) 2023 MagnaX Software
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

set -eu


version="latest"

target=""
arch=""

case "$(uname -s | tr '[:upper:]' '[:lower:]')" in
  linux)
    target="unknown-linux-musl"
    ;;
  *)
    echo "Unknown kernel: $(uname -s)" >&2
    exit 1
    ;;
esac

case "$(uname -m | tr '[:upper:]' '[:lower:]')" in
  x86_64)
    arch=x86_64
    ;;
  aarch64)
    arch=aarch64
    ;;
  *)
    echo "Unknown architecture: $(uname -m)" >&2
    exit 1
    ;;
esac

filename="zellij-${arch}-${target}.tar.gz"
download_url="https://github.com/zellij-org/zellij/releases/${version}/download/${filename}"

exec 3>&1
log() {
  echo "$(date "+%Y.%m.%d-%H:%M:%S"): $@" >&3
}


download_tarball() {
  log "Downloading zellij ${version}"
  if [ `which curl` ]; then
    curl -sS -L "${download_url}" -o "${tmp}/${filename}"
  elif [ `which wget` ]; then
    wget -nv "${download_url}" -O "${tmp}/${filename}"
  else
    log "Neither curl nor wget are available"
    exit 1
  fi
}

extract_install_tarball() {
  log "Extracting..."
  tar xzf "${tmp}/${filename}" -C /usr/local/bin --unlink-first zellij
  chmod +x /usr/local/bin/zellij
}

tmp=`mktemp -d`

download_tarball
extract_install_tarball

if [ -n "${ZELLIJ_INSTALL_AUTO+1}" ]; then
        log "Adding autostart to .bashrc"
        cat >> ~/.bashrc <<'EOF'

# zellij section

eval "$(zellij setup --generate-completion bash)"

export ZELLIJ_AUTO_ATTACH=true
export ZELLIJ_AUTO_EXIT=true

eval "$(zellij setup --generate-auto-start bash)"
EOF
fi


rm -rf "${tmp}"