download-node-nightly.sh - simple script to fetch Node.js nightlies on OS X and Linux (x86, x64 & ARM)

download-node-nightly.sh

#!/bin/sh

# Usage:
# sh download-node-nightly.sh

hasxz=$(which xzcat)
os=$(uname | tr '[A-Z]' '[a-z]')
arch=$(uname -m)
pwd=$(PWD)

[[ "$arch" == "x86_64" ]] && arch=x64
[[ "$arch" == "x686" ]] && arch=x32

type=nightly

echo -e "Getting latest list of nightlies…\n"
latest=$(curl -sL https://nodejs.org/download/${type}/index.tab | head -2 | tail -1 | awk '{ print $1 }')

echo -e "Downloading…\n\n"
url="https://nodejs.org/download/${type}/$latest/node-${latest}-${os}-x64.tar"
if [ "X${hasxz}" == "X" ]; then
  url="${url}.gz"
  pipecmd="| tar -zx -C ./"
else
  url="${url}.xz"
  pipecmd="| xzcat | tar -x -C ./"
fi
sh -c "curl -L --progress-bar '${auth}' '${url}' ${pipecmd}"
sh -c "mv ${pwd}/node-${latest}-${os}-x64/ /usr/local/bin/node"
echo "node-${latest}-${os}-x64 now available as node binary in path"
break