What a find, one heck of a comprehensive Unix Cheat Sheet!
Thanks goes to Digg.com and embeemb for posting this, great work!
Create, Read, Update, Delete = CRUD
The four basic functions of any persistent storage mechanism.
Refers to all of the major functions that need to be implemented in a relational database application to consider it complete. Each letter in the acronym can be mapped to a standard SQL statement:
- Create => INSERT
- Read (Retrieve) => SELECT
- Update => UPDATE
- Delete (Destroy) => DELETE
It's really that simple and not only applies to databases but nearly any form of application.
CRONTAB and Cron Jobs
In simplest terms, a time-based scheduling service in Unix & Linux systems.
Driven by a configuration file named crontab that specifies shell commands to run periodically on a given schedule.
E.g. * Load the LighTPD web server when the server reboots
