How to Downgrade iOS 7 Beta to iOS 6
Fed up with iOS 7 beta and it’s quirky bugs? You can downgrade fairly easily, which is probably a good idea for most casual users who aren’t accustomed to handling beta OS releases in various stages of development, because it’s really not meant for everyday use on your primary device anyway. Yes, Apple’s developer notes attached to iOS 7 beta releases specifically say that any iPhone or iPod touch that upgrade to iOS 7 can not downgrade back to iOS 6, but that’s not actually true in practice. In fact, just like with prior beta versions of iOS, you can downgrade back to whatever the most recent stable iOS release is with relative simplicity, so ignore the dev portal message and get back to a stable version. It only takes a few moments, and it’s not much different than restoring iOS in general.
iOS 7 brings a significant user interface overhaul to Apple’s mobile devices, and though it’s best to be experienced and used first hand, 
Apple has yet to provide an official list of OS X 10.9 compatible Macs, but as we 
Need to securely delete a file, group of files, or an entire directory, insuring that it’s quite literally never recoverable by any known possible means? You can do this easily from the command line with the help of an incredibly powerful tool called srm. srm, as you may have guessed, stands for ‘secure removal’, and is a secure version of the commonly used ‘rm’ command that exists in virtually every flavor of unix, Mac OS X included. Be advised this utility is not for everyone and certainly not for novice users, srm should be considered an advanced tool, and it’s best used by those who are comfortable with the command line and understand the data repercussions of secure delete functions.
Though most of us are accustomed to the default QWERTY keyboard layout, iOS does provide options to toggle between QWERTY, AZERTY, and QWERTZ. The latter two options are generally used in Europe, but you can enable them on any iPad or iPhone regardless of which region you’re in, the only requirement is that a Latin alphabet keyboard is the default. These new software layouts work whether the keyboard is docked or in the 
Mac OS X includes an excellent command line network utility called “nettop” that allows users to monitor all network activity, traffic, and routes from a Mac to the outside world, both through local (LAN) and wide area (WAN) connections. If you’re unfamiliar with networking tools like this, you can think of nettop as a network centric task manager, displaying active networking connections, sockets and routes, their respective names and process id, the state of the connection and whether the connection is established, waiting, or listening, and information about individual process data transfer. It’s a bit like the standard ‘top’ and ‘htop’ commands which show process and resource information, but rather than showing CPU and RAM usage, it will show live network transfer information like packets sent and received, packet size, and total data transferred.
