Archive for November, 2007

A Unix introductory document

Two years ago I created a Unix introductory document as part of a course manual for starting bio-informaticians. The document is written in OpenOffice.org (a requirement since I prefer LaTeX).
The document presents a general introduction to the Unix family of operating systems. It presents most examples using the Bourne shell (the shell that was delivered [...]

November 20, 2007 • Posted in: unix • No Comments

Using LVM snapshots as backups

I’ve written a script to rotate multiple snapshots of a logical volume in Linux’s LVM as a backup mechanism. The script is meant to be run via crond and (forcibly) removes the oldest snapshot and creates a new one. It can also monitor usage of the available snapshots. Call the script with the option –help [...]

November 19, 2007 • Posted in: code • No Comments

Dipping my toes in the Xen pool

In my previous home setup I had two physical computers, one acting as my firewall and one acting as a DMZ system. Within the DMZ system there was no separation of functionalities and the need for slightly better hardware was starting to get apparent. Combine that with the need for consolidation to cut on electricity [...]

November 15, 2007 • Posted in: code, security • No Comments