Alter 3 files

Update `README.md`
Delete `node.md`
Add `node.sh`

README.md

@@ -57,7 +57,7 @@ Markdown docs and shell scripts for automating installation of things and docume
 * [`gophernotes.sh`](gophernotes.sh) for the the GopherNotes Juypter kernel
 * [`jetbrainsToolbox.md`](jetbrainsToolbox.md) for installing the JetBrains Toolbox tool
 * [`nim.md`](nim.md) for installing the Nim programming language
-* [`node.md`](node.md) for installing Node.JS
+* [`node.sh`](node.sh) for installing Node.JS
 * [`ohmyposh.sh`](ohmyposh.sh) for installing the Oh My Posh command line prompt
 * [`poetry.sh`](poetry.sh) for installing Python Poetry
 * [`profobuf.md`](protobuf.md) for installing the various things related to Protocol Buffers

node.md

@@ -1,7 +0,0 @@
-# Node JS
-
-2021-05-04
-
-1. Download from https://nodejs.org/en/download/current/
-2. Extract to `/opt/node-vx.x.x-linux-x64`
-3. Add `/opt/node-vx.x.x-linux-x64/bin` to PATH (in `~/.bashrc`

node.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# - Assumes your Go installation goes in /opt/node
+# - Assumes you're using Bash
+# - Assumes you want the Linux amd64 build
+
+function getStatusCode() {
+	set +e
+	bash -c "$1" > /dev/null 2>&1
+	echo $?
+	set -e
+}
+
+if [ "$1" == "" ]; then
+    echo "Usage: $0 [VERSION]"
+    echo "Please specify a version."
+    exit 1
+fi
+
+TEMP_DIR=$(mktemp --directory)
+
+set -ex
+
+VERSION=$1
+
+INSTALL_DIR="/opt/node"
+
+# eg: https://nodejs.org/dist/v16.16.0/node-v16.16.0-linux-x64.tar.xz
+FILENAME="node-v$VERSION-linux-x64.tar.xz"
+DL_URL="https://nodejs.org/dist/v$VERSION/$FILENAME"
+
+FILENAME="$TEMP_DIR/$FILENAME"
+
+BASH_PROFILE="$HOME/.bashrc"
+
+# Remove old installation temp dirs
+if [ -e "$TEMP_DIR" ]; then
+    rm -rf $TEMP_DIR
+fi
+mkdir -p $TEMP_DIR
+
+wget --output-document=$FILENAME $DL_URL
+tar -C $TEMP_DIR -xf $FILENAME
+
+# In the instance we're not installing fresh...
+if [ -e $INSTALL_DIR ]; then
+	sudo rm -r $INSTALL_DIR
+fi
+
+sudo mv $TEMP_DIR/node-v16.16.0-linux-x64 $INSTALL_DIR
+
+# Check Bash profile to see if we've got env vars set yet
+if [ $(getStatusCode "cat $BASH_PROFILE | grep /opt/node/bin") != "0" ]; then
+    echo "Adding Node binaries to PATH"
+    echo 'export PATH=$PATH:"/opt/node/bin"' >> $BASH_PROFILE
+fi
+
+# Tidy up
+rm -r $TEMP_DIR