Android is one of the most popular mobile operating systems (and it is based on the Linux kernel too.) However, diving into developing apps for Android can appear to be a bit daunting at first. The following how-to runs you through the basics of setting up an Android development environment on your Fedora machine. The basic workflow is to download the Android SDK, use the SDK to generate a quick first “hello world” application, then test out that application with either a physical Android device or the Android emulator.
A lot has been said on fedora-devel in the last few weeks about DNF and Yum. I thought it might be useful to contribute my own views, considering I’ve spent the last half-decade consuming the internal Yum API and the last couple of years helping to design the replacement with about half a dozen of the packaging team here at Red Hat. I’m also a person who unsuccessfully tried to replace Yum completely with Zif in fedora a few years ago, so I know quite a bit about packaging systems and metadata parsing.
A recurring Linux joke / horror story is running the command rm –rf /. Imagine if it actually happened? What would or could you do to recover?
Linux specialist Kyle Kelley recently decided to see what happened if he launched a new Linux server and ran rm –rf / as root.
This command is the remove (delete) command, with the flags –rf indicating to run recursively down all folders and subfolders, and to force deletion even if the file is ordinarily read-only. The / indicates the command is to run from the top-most root directory in Linux.