Question: how to install plv8 on linux?
Answer: Extract plv8. zip and cd into it. sudo apt-get install subversion. sudo make static. Copy plv8.so to /usr/lib/postgres/9.1/lib. Copy plv8--(version).sql and plv8.control to /usr/share/postgres/9.1/extension. psql -d dbName. CREATE EXTENSION plv8; Repeat 6-8 for plls (livescript) and plcoffee (coffeescript) if required.