protobuf3_install.sh

#!/bin/bash
# https://gist.github.com/sofyanhadia/37787e5ed098c97919b8c593f0ec44d8
# Make sure you grab the latest version
set -euo pipefail

VERSION='3.5.1'
FILENAME=protoc-${VERSION}-linux-x86_64.zip
INSTALL="/opt/protobuf/protoc-${VERSION}"
CURRENT="/opt/protobuf/current"

curl -OL https://github.com/google/protobuf/releases/download/v${VERSION}/${FILENAME}

# Unzip

sudo mkdir -p "$INSTALL"
sudo unzip -o ${FILENAME} -d "$INSTALL"

# create symlink to the current version
if [ -e "$CURRENT" ]; then
    sudo unlink "${CURRENT}"
fi
sudo ln -sf "${INSTALL}" "${CURRENT}"

# update access rights
sudo chmod -R a+rx ${INSTALL}/bin

# directories should be READ EXECUTE, but not the files
find /opt/protobuf/ -type d -exec sudo chmod a+rx {} \;
sudo chmod -R a+r ${INSTALL}/include

# link all the includes
sudo ln -sf ${CURRENT}/include/* /usr/local/include/

# XXX MANUALLY
echo "Add ${CURRENT}/bin to your PATH"
# Optional: change owner
# sudo chwon [user] /usr/local/bin/protoc
# sudo chwon -R [user] /usr/local/include/google