Install Node

install-node.sh

#!/bin/bash

# *** RUN AS ROOT ***

# Define help function
function help(){
    echo "Node JS Install Script - Install Node JS";
    echo "Usage example:";
    echo "install-node (-v|--version) string [(-f|--force)] [(-p|--platform) string] [(-a|--arch) string]";
    echo "Options:";
    echo "-v or --version string: Node JS Version to install. Required.";
    echo "-f or --force: Force install (re-install same version).";
    echo "-p or --platform string: Platform (defaults to linux).";
    echo "-a or --arch string: Processor Architecture Platform (defaults to x64).";
    exit 1;
}

# Declare vars. Flags initalizing to 0.
force=false;

# Execute getopt
ARGS=$(getopt -o "v:fp:a:" -l "version:,force,platform:,arch:" -n "Node JS Install Script" -- "$@");

#Bad arguments
if [ $? -ne 0 ];
then
    help;
fi

eval set -- "$ARGS";

while true; do
    case "$1" in
        -v|--version)
            shift;
                    if [ -n "$1" ]; 
                    then
                        version="$1";
                        shift;
                    fi
            ;;
        -f|--force)
            shift;
                    force=true;
            ;;
        -p|--platform)
            shift;
                    if [ -n "$1" ]; 
                    then
                        platform="$1";
                        shift;
                    fi
            ;;
        -a|--arch)
            shift;
                    if [ -n "$1" ]; 
                    then
                        arch="$1";
                        shift;
                    fi
            ;;

        --)
            shift;
            break;
            ;;
    esac
done

# Check required arguments
if [ -z "$version" ]
then
    echo "You must specify a Node JS version number";
    help;
fi


if [ -z "$platform" ]; then
    PLATFORM=linux
else
    PLATFORM=$platform
fi

if [ -z "$arch" ]; then
    ARCH=x64
else
    ARCH=$arch
fi


# Iterate over rest arguments called $arg
for arg in "$@"
do
    # Your code here (remove example below)
    echo $arg
done


# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

SEMVER_REGEX="^(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(\-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?(\+[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$"

function validate_version {
    if [[ "$version" =~ $SEMVER_REGEX ]]; then
        # if a second argument is passed, store the result in var named by $2
        if [ "$#" -eq "2" ]; then
            local major=${BASH_REMATCH[1]}
            local minor=${BASH_REMATCH[2]}
            local patch=${BASH_REMATCH[3]}
            local prere=${BASH_REMATCH[4]}
            local build=${BASH_REMATCH[5]}
            eval "$2=(\"$major\" \"$minor\" \"$patch\" \"$prere\" \"$build\")"
        else
            echo "$version"
        fi
    else
        echo "Version $version does not match the semver scheme 'X.Y.Z(-PRERELEASE)(+BUILD)'"
        exit 2
    fi
}

# Validate Version
validate_version

# Download & Unpack Node JS
CURRENT=$(node -v | cut -c 2-)
URL=http://nodejs.org/dist/v$version/node-v$version-$PLATFORM-$ARCH.tar.gz

echo "* Requested Version: $version"
echo "* Current Version: $CURRENT"

if [ "$force" == false ] && [ $version == $CURRENT ]; then
    echo '!! Node version is the same, no need to download and install.'
    exit 0
fi

echo 'Download and Unpack Node.js'
curl -# -L "$URL" | tar xzf - --strip-components=1 -C /usr/local

# echo "Install Node Globals"
# npm install -g gulp-cli gulp

echo 'Node.js install completed'
exit 0

upgrade-node-rpi.sh

#!/bin/bash

./install-node -a armv6l -v $@