android blackberry

Sometimes you need to destroy or wipe data from hard drives (for example, before you sell your old hard drives on eBay) so that nobody else can access them. Simply deleting data (e.g. with rm) is not enough because that just removes the file system pointer, but not the data, so it can easily be undeleted with recovery software. Even zero'ing out your hard drive might not be enough. Here's where...

As you keep on adding more and more machines to Puppet, it tends to get slower. A major reason for this is that Puppet uses Webrick by default which it ships with. While webrick is good for testing and small scale deployments, it performs poorly as the number of machines increases. So a good alternative is to use Apache or Nginx in combination with mod_passenger or Unicorn. I'll show you how...

 This tutorial shows how you can install an Apache2 webserver on a CentOS 6.2 server with PHP5 (through PHP-FPM) and MySQL support. PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites.I do not issue any guarantee that this will work for you!1 Preliminary NoteIn this tutorial I use...

Ten years ago I installed Linux for the very first time. To be exact, it was Slackware 7, the best distribution at the time in my opinion. Since then I’ve come to favor Debian Linux as my favorite version…at least for my Linux servers. I like to have a solid core system installed that I can build from scratch, but this is for another time. This article is for you new Linux admins; here are...

WordPress has become one of the most popular content management systems (CMS) available. With its host of available themes, templates, and plugins, WordPress is versatile, easy to use – and provides an easy venue for users to make some very common mistakes. Some users put too much trust in the standard WordPress installation. All too often, these users lack an understanding of basic security,...

SSH is one of the protocols of the TCP/IP protocol suite found at the application layer (Layer 7) of the Open Systems Interconnection (OSI) network model. Officially specified in RFC 4251 (and later, several other RFCs) SSH functions in a way that is similar to telnet but is far more robust and capable. SSH lets you log in to other hosts, get a shell and execute commands on them (for more details,...