Implement of unix installation script

scripts/install_unix.sh

@@ -0,0 +1,124 @@
+#!/usr/bin/env bash
+
+NODE=node
+RESIN=resin
+NPM=npm
+RESIN_PACKAGE=resin
+
+function print() {
+	echo "---> $1"
+}
+
+function missingProgram() {
+	! hash $1 2>/dev/null
+}
+
+function hasProgram() {
+	hash $1 2>/dev/null
+}
+
+function missingNode() {
+	missingProgram $NODE || missingProgram $NPM
+}
+
+function isDarwin() {
+	[ "$(uname)" == "Darwin" ]
+}
+
+function isLinux() {
+	[ "$(expr substr $(uname -s) 1 5)" == "Linux" ]
+}
+
+function isFreeBSD() {
+	[ "$(uname)" == "FreeBSD" ]
+}
+
+echo "Installing resin.io command line utility"
+echo ""
+
+if hasProgram $RESIN; then
+	print "Resin is already installed in this system."
+	exit 0
+fi
+
+if isDarwin; then
+
+	print "Darwin system detected"
+
+	if missingNode && hasProgram brew; then
+		print "Trying to install node from brew"
+		brew install node
+	fi
+
+	if missingNode && hasProgram fink; then
+		print "Trying to install nodejs from fink"
+		fink install nodejs
+	fi
+
+	if missingNode && hasProgram port; then
+		print "Trying to install nodejs from MacPorts (requires admin privileges)"
+		port -v install nodejs
+	fi
+
+elif isLinux; then
+
+	print "GNU/Linux system detected"
+
+	# Ubuntu 10.04, 12.04, 14.04.
+	# Debian Wheezy, Jessie, Sid.
+	# Linux Mint Maya, Qiana, Debian Edition.
+	# Elementary OS Luna, Freya.
+	if missingNode && hasProgram apt-get; then
+		print "Trying to install nodejs from apt-get (requires admin privileges)"
+		curl -sL https://deb.nodesource.com/setup | bash - && apt-get install -y nodejs
+	fi
+
+	# RHEL 5, 6, 7.
+	# CentOS 5, 6, 7.
+	# Fedora Heisenbug, Schrödinger's Cat.
+	# Oracle Linux.
+	# Amazon Linux.
+	if missingNode && hasProgram yum; then
+		print "Trying to install nodejs from yum (requires admin privileges)"
+		curl -sL https://deb.nodesource.com/setup | bash - && yum install -y nodejs
+	fi
+
+	# Arch Linux
+	if missingNode && hasProgram pacman; then
+		print "Trying to install nodejs from pacman (requires admin privileges)"
+		pacman -S nodejs
+	fi
+
+	# Gentoo
+	if missingNode && hasProgram emerge; then
+		print "Trying to install nodejs from emerge (requires admin privileges)"
+		emerge nodejs
+	fi
+
+elif isFreeBSD; then
+
+	print "FreeBSD system detected"
+
+	if missingNode && hasProgram pkg_add; then
+		print "Trying to install node from pkg_add (requires admin privileges)"
+		pkg_add -r node
+	fi
+
+	if missingNode && hasProgram pkg; then
+		print "Trying to install node from pkg-ng (requires admin privileges)"
+		pkg install node
+	fi
+
+else
+	print "Unsupported operating system"
+fi
+
+if missingNode; then
+	print "Unable to install node on this system."
+	print ""
+	print "Please go to http://nodejs.org/download/ and re-run this script once node has been installed."
+	exit 1
+else
+	$NPM install -g $RESIN_PACKAGE
+	print "Installation completed."
+fi