The National Security Agency (NSA) of the USA has published some security configuration guides for various popular Operating Systems. Linux is covered by the Red Hat Enterprise Linux 5 security guide, but most of the included information can be easily translated to other Linux distributions. As it is clearly stated in the guide’s disclaimer, all…
This post is not an article about how to receive email notifications from your system, but rather a tip about what should be your very first (No.1) action after a clean installation of a Linux system. It is well known that Linux – and obviously many other *nix systems, if not all – are pre-configured…
In my opinion, the biggest problem of the tar format (‘ustar‘) is that it does not store the checksums of the files it contains. So, in order to be able to verify the contents of the tar archive, you either need to keep the original data on the hard drive and compare the archive contents…
A few days ago, I had decided to revise my data backup methods, so to be able to easily recover as much data as possible after a partial corruption of the medium, a DVD that is, on which the data has been stored. I should clarify that by corruption I by no means include the…