In this article, I'll show you how to enable hibernate support in Ubuntu 14.04 ("Trusty Tahr") by making a "Hibernate" menu entry appear in Unity's global system pulldown menu. The Ubuntu developers disabled this a couple of years ago because hibernate didn't work reliably on all systems - proceed at …read more
Sometimes it's useful to trigger an action after a file is closed. Suppose you started a lengthy download on your notebook and you want to suspend it as soon as the download is done. There are several ways to achieve this.
If you started the download using a web browser …read more
Web browsing on a public Wifi network is a security risk as it's quite simple to capture network traffic. Even if you only connect to SSL-protected sites, people can still find out which web sites you're accessing. Fortunately, there is a quick way to protect your privacy - all you need …read more
When setting up a Hadoop cluster using Debian packages, it's often useful to work with a local mirror. In this article, I'll walk you through creating an apt mirror for Cloudera's Hadoop distribution.
There's quite a few advantages in having a local mirror, all of which should be familiar to …read more
Setting up a Squid forward proxy can be a pretty daunting task since Squid is an extremely flexible piece of software. In this article, I'm going to provide a minimal non-caching, authenticated configuration. I have tested this with Squid 3.1.12 on Ubuntu 13.04, but with minor adjustments …read more
I often move around in checked out Subversion or Git source trees on a Bash command line. Directory structures tend to get quite deep (especially in Java projects), so one problem keeps coming up frequently: Changing back to the base directory of the source tree. Typing "cd .." ten times is …read more
Recently, I have been playing with Kerberos, a popular Single Sign On system (SSO) that is used in many large organizations. My first contact with Kerberos has been at university in a network security course, but that only covered the cryptographic part, not the more practical issues like setting up …read more
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