Hack and / - Dr hjkl and Mr Hack
Here's yet another opportunity for me to add one more reason I love mutt as an e-mail program—it's practically vim's key-binding cousin. In fact, when you first start using mutt, you'll notice that when in doubt, you often can just press the same keys you'd use in vi to do something similar in mutt. The only place you might become confused initially is once you open an e-mail message and read it. By default, the j and k keys switch to the next and previous e-mail message in your folder, even when an e-mail is open, so you do have to teach yourself to use Enter and backspace to scroll through the body of an e-mail message.
Netris is a great command-line Tetris clone available on most major Linux distributions. One thing that always bugs me about Netris is that although it uses much of the home row to rotate and move shapes in the game, the keys are just slightly off from what you'd expect them to be in vi. Luckily, you can change the key bindings when you start Netris, so for true vi keys execute:
netris -k "hkl j"
Doing the above causes h to move pieces left, l to move them right, k to rotate them, j to make a piece drop faster and the spacebar to drop a piece to the bottom immediately. My Netris score was much improved once I could play it like vi.
Unfortunately, Firefox doesn't use vi key bindings by default (although Google Reader does), but it's not surprising that this can be fixed with a Firefox plugin. The Vimperator plugin (vimperator.org/trac/wiki/Vimperator) is extensive enough to deserve a column of its own (in fact, send me an e-mail at firstname.lastname@example.org, if you'd be interested in that). Essentially, once the plugin is installed, your entire Firefox session turns into a modal vi-style session. Not only can you use hjkl, g, G and so forth to navigate pages, but also when you are in a text field, Vimperator actually moves into insert mode! You even can record and play back macros just like in vim. Vimperator adds a bunch of other features to make keyboard-only Web browsing not only possible, but also preferable to the mouse. If you are a vim lover and haven't installed Vimperator yet, I highly recommend it.
As you dig around both command-line and GUI programs, you'll find that a surprising number of them at least support hjkl, if not more-extensive vi key bindings. I've listed only some of my favorites here, but the next time you open a program, press j a few times—you just might be surprised when the program scrolls down.
Kyle Rankin is a Senior Systems Administrator in the San Francisco Bay Area and the author of a number of books, including Knoppix Hacks and Ubuntu Hacks for O'Reilly Media. He is currently the president of the North Bay Linux Users' Group.
Kyle Rankin is a VP of engineering operations at Final, Inc., the author of a number of books including DevOps Troubleshooting and The Official Ubuntu Server Book, and is a columnist for Linux Journal. Follow him @kylerankin.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.Register Now!
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Tech Tip: Really Simple HTTP Server with Python
- SUSE LLC's SUSE Manager
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Managing Linux Using Puppet
- Doing for User Space What We Did for Kernel Space
- Returning Values from Bash Functions
- Rogue Wave Software's Zend Server
- Google's SwiftShader Released
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide