How to install drush on LAMP 16.04?

OK, I’ve figured it out:

In order to get the installation of Composer, and subsequently Drush, to work, zip and unzip extensions needs to be installed:

$ apt-get update $ apt-get install zip unzip

Then it’s pretty plain sailing installing Composer. Make sure you have installed proper version of Curl first:

$ apt-get install curl php7-cli git

Then: $ curl -sS https://getcomposer.org/installer | sudo php – --install-dir=/usr/local/bin --filename=composer

And Drush:

$ composer global require drush/drush

Then use Composer to create your project. If you run into permission issues, then:

1. Add “www” group and add your user to this group: $ sudo groupadd www $ sudo usermod -a -G www [user]

2. logout/login

3. Set ownership and write permissions: $ sudo chown -R root:www /var/www $ sudo chmod 2775 /var/www $ find /var/www -type d -exec sudo chmod 2775 {} + $ find /var/www -type f -exec sudo chmod 0664 {} +

Also note, you cannot run Composer on the smallest server config. It’s fairly memory hungry, so min. 1GB is recommended.