gparis questions

gparis answers

• how to fix (2002, "Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)") on ec2 bitnami?
• FileNotFoundException (stderr & stdout) when submitting JAR to Spark in EMR environment
• Limit number of pages in will_paginate
• How do I set up cron to run a file just once at a specific time? [closed]