This wiki is used to share my personal notes related to servers, system administration, security, programming, network devices, etc. I use Cent-OS / Fedora / RHEL type distributions for my work, so most of the notes should work on such RPM based distributions without requiring major changes. Readers can contact me at saurabh[at]sbarjatiya.com. All types of comments (including typo fixes) are welcome. A latest database dump of wiki is available at http://www.sbarjatiya.com/notes_wiki.sql.bz2 so that interested users can host a local copy of this wiki and even edit it as per their preferences.