Linux

Define disk quotas to keep users from hogging drive space

With massive hard drives, one might be tempted to think disk quotas a thing of the past. However, with larger capacity comes larger amounts of data, and in multi-user systems, one user can easily consume more drive space than they should, preventing other users from utilising storage space. Read more »

Dig for more data in the /proc directory

One of the most interesting directories on any Linux system is /proc, a virtual filesystem that provides a plethora of information on the hardware of the running system, and of the various processes running. Read more »

Find and fix weak OpenSSL/OpenSSH keys: Debian-based Linux vulnerability

A recent vulnerability was found in the OpenSSL package as provided by Debian and Debian-based Linux distributions, such as Ubuntu, that broke the effectiveness of the OpenSSL PRNG (Predictable Random Number Generator). Read more »

Log Linux services with runit

Each supervised service is controlled via a run script, similar to an init script for a system service. This run script does one thing: prepares for and starts a service. Read more »

Use runit to supervise Linux services

Traditional Linux systems use SysV init for starting the system. The problem with using a SysV init system is that services are also treated as one-time start-up scripts. Read more »

Learn to use the openssl command-line program

OpenSSL can be used to create, request, sign, and revoke certificates and can also be used to perform other cryptographic operations such as creating hashes for files, testing SSL connections, and more. Read more »

Try IRC with Irssi to communicate via chat

Many IRC networks, particularly the Freenode network, cater to a lot of open source and Linux-based groups. There are many IRC clients available, but one of the most extensible and powerful is the command-line based Irssi. Read more »

Using vi key bindings in bash and zsh

By default, most shells use emacs-style key bindings for command-line editing and modification. For users of vi or vim, however, you can configure shells to use vi key bindings instead. Read more »

Securely delete files with shred

Most users are familiar with the rm command. Most of the time, this command is sufficient for routine deletion, but for files that contain sensitive data, you might need to scrub them so that they cannot be recovered later with other data retrieval tools. Read more »

Configure Snort to log packets to MySQL

We will look at configuring Snort to log packets to a remote MySQL server where a graphical Web interface can be used to view captured packets and statistics. Read more »

Log in


Sign up | Forgot your password?

Blogs

RSS feed

  • Lana Kovacevic What's new in GWT 1.5?

    I recently wrote an introduction to the Google Web Toolkit based on Lars Rasmussen's session at the Google Developer Day 2008 in Sydney. Following the introductory session Lars gave us a deeper insight into GWT, particularly what's new in version 1.5. Read more »

    -- posted by Lana Kovacevic

  • Lana Kovacevic The Portal of the Future

    At this year's Gartner Application Development, Integration and Web Services Summit, I attended Gene Phifer talk: "Portal of the Future: What's Beyond Web 2.0?". Read more »

    -- posted by Lana Kovacevic

  • Staff Google's new foray into image search

    Google is developing visual crawling software that can be used for facial recognition and scene analysis. In addition images can be matched with display ads and utilise geotagging information for various applications. Read more »

    -- posted by Staff

What's on?

  • Club Builder: Sports, Gates and Gears

    This week on Club Builder: Steve Ballmer gives a teary goodbye to Bill Gates, Mark Taylor moves into IT endorsements and we ask some Google Gears questions.