And Slaters Go Plop » Linux

Safely recover from a freeze in Ubuntu

Damian — Mon, 25 Jul 2011 23:09:35 +0000

If you ever encounter a system lockup in Ubuntu here’s a little trick you can use to safely restart your computer.

Hold down the Alt and PrtScn/SysRq keys at the same time and, keeping them held down, enter the following sequence of keys: R, E, I, S, U, B. Hold each key down for a second or so and don’t rush.

What it does is it allow Linux to take control of your system, requests politely that all processes close, forces all processes to close, flushes data to disk, unmounts your filesystems and reboots.

Here’s a couple of mnemonics: ”Raising Elephants Is So Utterly Boring” or “Reboot Even If System Utterly Broken”.

It’s extremely rare that this is necessary due to Linux’s stability but I’ve found I’ve needed this a couple of times recently (I suspect Google Chrome is the culprit) so I’m posting this here for easy future reference from my phone.

Change default Google localisation in Firefox in Ubuntu

Damian — Tue, 03 May 2011 21:33:30 +0000

Be default in Firefox on Linux, when you use the Google search up in the address bar it defaults to a search of google.com instead of my preferred google.co.nz. If you want to change this, go look in /usr/lib/firefox[--version--]/searchplugins/google.xml and swap out the .com for .co.nz (or whatever localised Google site you prefer).

Save multiple images to a PDF in Linux

Damian — Thu, 03 Dec 2009 21:54:40 +0000

Place all the images you want in the PDF into a new directory and in the console run the following from within that directory:

convert * mynewfile.pdf

The powerful convert command uses the ImageMagick library which can be installed (in Ubuntu) with the following console command:

sudo apt-get install imagemagick

How to delete all .svn directories

Damian — Wed, 29 Jul 2009 22:25:44 +0000

In Linux, if you want to remove all .svn files and folders within a directory, navigate to the directory in your terminal and use:

find . -name ".svn" -type d -exec rm -rf {} \;

Credit

Preload to make Linux faster

Damian — Tue, 26 Feb 2008 21:14:51 +0000

If you’re running Linux you’ll be aware that it’s crazyfast™ already. Want even more speed? Get Preload. If you’re running Ubuntu you can get it by opening your console and typing sudo apt-get install preload.