Lightweight change control system for Linux and Unix servers

Most organizations try to perform some kind of change control for their Unix servers, be it for compliance reasons or simply because several admins are taking care of the same set of servers and need to know about what the others did.

Review of the Samsung ST5500 digital camera

Just today, I got my new digital camera Samsung ST5500. It features a touch sceen display and a lot of connectivity options. I'll describe my experiences with the camera in this blog post. Mostly, I will focus on the new and shiny features, not on the basic functionality.

One time passwords with OPIE and Android

For secure remote access to servers, one of the most secure access control mechanisms is the usage of one time passwords (OTP). With the setup described in this blog post, you can securely log in to your server even from untrusted client machines, like an internet cafe. A potentially installed keylogger would only log a useless, old one-time-password.

optimize your shell environment

Here are some random improvements to the shell (bash) environment that I like to use on the servers I manage. You can simply add the code snippets to your .profile file.

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