Power Supply Need Calculator

I decided to get a new case for my main computer today, and chose a micro atx case due to the fact that I’ve always had a big case and am sick of it…

I realized that the small PSU’s that come with micro atx cases might not support my 3 HDDs and1 DVD+RW drive, so I found a great PSU need calculator that I wanted to share.

Here it is.


SSH Local Port Forwarding Made Easy

I’ve been using this for a while now, and have found it a great little trick for accessing services that are blocked due to a firewall.

It’s pretty simple, you just have a few parts to the command string.  The first command argument tells ssh to forward a local port (LP) to a remote machine Remote) on a remote port (RP).  The second part is something you’re probably familiar with, the destination that you’re connecting to (Destination).

An example with the abbreviations above would be:

ssh -L LP:Remote:RP Destination

Say for example, you ran the command “ssh -L 1234:myInternalServer.com:80 myExternalServer”.  In order to access port 80 on myInternalServer.com you’d open up your web browser and point it to http://localhost:1234.  It’s as easy as that!

Howto: Convert NRG Files to ISO Files

I recently got a couple fo CD images from a friend in the NRG format, and wanted to burn them to a couple of CD-R’s. Here’s the process I used to do this:

sudo apt-get install nrg2iso
nrg2iso original_image.nrg new_image.iso

Then just use k3b, gnomebaker, or your favorite CD Burning software to burn the ISO.


HowTo: Use Find on Linux to Execute Commands Recursively

I just used the best music player on the planet to organize my music really nicely. It organized them by filetype, first letter of artist, artist, and album. The problem was, it left some dangling folders that I wanted to delete so my library looked clean on the filesystem. So I decided to use a little bit of linux command line fun to get the folders removed.

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HowTo Restore Grub Boot Password In Ubuntu Dapper

A cardinal rule with computer security is that if you have physical access to a computer, you can pretty much do whatever your heart desires to it. Luckily, this includes removing the grub password from a linux box so that you can restore the root password…

Your best course of action in doing this is to download a bootable linux cd. The one that I tested this with is a worthwhile download even if you’re just reading this for fun.

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Sweet Stuff With Facebook

I was checking out my Facebook account today and noticed that they have a new thing called Notes.  It seems like you can import your posts from your personal blog right into Facebook.  Better yet was the fact that it was painless to do.  All that I did was enter the address of this blog, and Facebook went out and grabbed my feed and imported all of the posts as Facebook Notes!  Way to go again Facebook for doing some innovative stuff.

Jon Howe