Sean's Obsessions » Link

A couple of uC hobby sites I found

sean — Mon, 17 Nov 2008 12:53:45 +0000

Both have some good links and projects for uC hobbiests.

Since everyone else has said it

sean — Fri, 24 Feb 2006 21:48:50 +0000

Sun’s looking to give away free Niagara servers to bloggers looking to review them.

I put my name in, not that this blog is a huge traffic source, but because I’m doing a series of articles for IBM on Unix performance tuning, and I think it would be sweet to use one of these boxes. I’ve also been doing some tuning and setup for b5media, and I’d love to compare mySQL and/or apache under the same load, assuming I can figure out a way to simulate it. I suppose given a fast connection (cough, like the one at work, cough), I could direct a portion of the requests that way, or just to write some code to replay the day’s transactions at it and compare it to the actual performance.

IOS 12.3(1) has a Cron feature

sean — Thu, 27 Jan 2005 21:41:39 +0000

IOS Command Scheduler

Cool!

The Command Scheduler feature provides the ability to schedule some EXEC command-line interface (CLI) commands to run at specific times or at specified intervals.

Restrictions for Command Scheduler
The EXEC CLI specified in a Command Scheduler policy list must not generate a prompt or have the ability to be terminated using keystrokes. Command Scheduler is designed as a fully automated facility and no manual intervention is permitted.

Information About Command Scheduler
To configure Command Scheduler, you need to understand the following concept:

Command Scheduler Overview
Command Scheduler Overview
Command Scheduler allows customers to schedule fully-qualified EXEC mode CLI commands to run once, at specified intervals, or at specified calendar dates and times. Originally designed to work with CNS commands, Command Scheduler has a broader application. Using the CNS image agent feature, remote routers residing outside a firewall or using Network Address Translation (NAT) addresses can use Command Scheduler to launch CLI at intervals to update the image running in the router.

Command Scheduler has two basic processes. A policy list is configured containing lines of fully-qualified EXEC CLI to be run at the same time or interval. One or more policy lists are then scheduled to run after a specified interval of time or at a specified calendar date and time. Each scheduled occurrence can be set to run once only or on a recurring basis.

How long until a new hire is productive?

sean — Mon, 13 Dec 2004 16:42:40 +0000

I was reading through an article with the byline Making good IT hires is critical to the success of the growing business, and came across the following comment:

When you bring in a new employee, you don�t get any value out of them for about 18 months, says [Robert] Berger

Yikes. That’s scary if it’s true.

I can see some cases, such as knowing some esoteric details of some system or another, but to provide no value is either BS, or the employee is an idiot. What does the guy do for a year and a half? Or is this just self serving commentary? (The person who made the comment runs a recruiting business)

Snapshots and LVM

sean — Tue, 19 Oct 2004 13:52:51 +0000

I’ve been looking for some instructions on how to do snapshots on my machine. I did some research a while ago, and found several partial explanations, some of them contradictory.

http://arstechnica.com/columns/linux/linux-20041013.ars

goes through the whole process. He’s using XFS as the file system, so there is an extra step to freeze it. I suppose with ext2 you could remout as RO, but I thought the whole point of snapshots was to do this stuff hot!

Snapshots are a way to freeze your hard drive at a moment in time, usually for backup purposes. You basically end up with a read-only version of your hard drive on a separate device that you can back up, while the original version can tinker along.

From the feeds…

sean — Mon, 19 Apr 2004 14:27:04 +0000

Some interesting stuff from the feeds this morning:

Solaris 10 to drop root
Brief tutorial on using gdb for developing exploits
Cisco IOS to go modular (finally)
Cisco to release datacentre deployment strategy blueprint Couldn’t find anything about it on CCO, though

There also seems to be something going around on blogs (1, 2, 3)

1. Grab the nearest book.
2. Open the book to page 23.
3. Find the fifth sentence.
4. Post the text of the sentence in your journal along with these instructions.

As a rule, all routers really care about is the location of each network
Routing TCP/IP Volume I, Jeff Doyle

A favour for a friend

sean — Fri, 23 Jan 2004 17:30:17 +0000

A coworker is trying to make some pocket money by making Custom Novelty Receipts, so I thought I’d give him a plug.

On a more serious note, if you are interested in how to run a business on the Internet, Web Master World has some excellent forums.

Perl Advent Calendar

sean — Mon, 01 Dec 2003 18:12:17 +0000

Here is the Perl Advent Calendar, a tutorial on a perl module for every day. The first one is on CGI::Untaint, which helps you to process form input in a CGI. There is also a series of RSS feeds.

Oh, the stupidity!

sean — Wed, 26 Nov 2003 14:32:37 +0000

This has gone too far. Political correctness has gone too far.

Perl Links

sean — Mon, 08 Sep 2003 21:01:34 +0000

I usually try to provide some original thoughts here, but I’ve run across several perl links that are worth passing along:

1 – Advanced usage of CPAN, including determining dependencies, updating all the modules on the system, and a simpler way to replicate modules across systems

2 – Excerpts from the new Perl Cookbook, which talks about DBD::SQLite, a DBD module that lets you do SQL databases without a SQL server (sort of an embedded SQL database)

3 – More from the new Perl cookbook, interesting things on “pretending a string is a file”, and regex shortcuts for balanced operators (ie {}, [], (), etc)

4 5 6 – Three articles on design patterns in Perl, sort of a warm up to the author’s upcoming book.