Script to update self-hosted Ghost blog to its latest version

update_ghost.sh

#!/bin/bash

KillNode() {
	NODE_PID=`ps aux | grep [n]ode | awk '{print $2}'`

	kill $NODE_PID 2>/dev/null
}

if [ -z $1 ]; then
    echo "I need ghost version number as parameter."
    echo "Exiting..."
    exit
else
    GHOST_VERSION=$1
fi

GHOST_DIR=/var/www/ghost
DOWNLOAD_DIR=/var/www

echo "Stopping ghost service"
service ghost stop

echo "Downloading ghost..."
cd ${DOWNLOAD_DIR}
wget https://github.com/TryGhost/Ghost/releases/download/${GHOST_VERSION}/Ghost-${GHOST_VERSION}.zip
echo "Done."

echo "Installing new version..."
unzip -qq Ghost-${GHOST_VERSION}.zip -d ghost-temp
cd ghost/
rm -rf core/
cd ${DOWNLOAD_DIR}/ghost-temp
cp -R core ${GHOST_DIR}
cp index.js ${GHOST_DIR}
cp *.json ${GHOST_DIR}
cd ${GHOST_DIR}
chown -R ghost:ghost *
npm install --production
echo "Done installing."

echo "Trying to start ghost manually..."
echo "Once it's started, check if blog is alive, then press CTRL+C to stop it."
trap KillNode SIGINT
npm start --production

echo "Starting ghost service..."
service ghost start

echo "Cleaning temp files..."
cd ${DOWNLOAD_DIR}
rm Ghost-${GHOST_VERSION}.zip
rm -R ghost-temp
echo "All done!"