Most of us take our keyboards for granted when they're working smoothly; perhaps we struggle for a bit finding the correct keyboard layout when doing a fresh Linux install, but once the OS is up and running they tend to stay out of our way. Except for those one or two keys that never quite do what they are supposed to. From the application "hot keys" on full-sized or multimedia keyboards to the peculiar add-ons sported by some laptop and netbook models, there are bound to be one or two specialty keys that need tweaking. You'll need some time and a couple of spare terminal windows to configure them into submission.
It is essential to keep track of the expiration dates of Secure Socket Layers (SSL) certificates, and so it's useful to have a periodic check on all certificates in use on a system, that will alert systems administrators when a certificate is about to expire. This article shows one way of setting up such a procedure for CentOS and other RHEL derivatives.
Usenet is a worldwide distributed Internet discussion system. It was founded in 1980 to enable users to read and post public messages to various newsgroups. As such, it predates forums, blogs, instant messaging and P2P networks.