Hack and / - Dr hjkl Meets the Vimperator
In my mind, the real power of Vimperator besides the standard keybindings is the fact that you can use the keyboard to open links, move to input boxes and even simulate mouse hovering. Vimperator calls this Hint mode, and to activate it, press the f key on any Web page. All of the “hintable” objects on the page, such as hyperlinks, text-entry boxes and drop-down menus will be highlighted with a number assigned to them (Figure 2). To select one of the highlighted items, you either can type in the number next to it and press Enter, or you can start typing part of the highlighted text. For instance, if you are reading a multipage article on the Web and see links to each page of the article along with a Next link, you could press f and then type N e x t. As you type, hints that no longer match drop away, and once there is only one match left, it automatically will load. When you use f, hints will open up in the current tab, but if you want to open the page in a new tab, simply start Hint mode with F instead of f. Like with other modes, you can press the Esc key to exit Hint mode.
The f and F keys activate a Quick Hint mode, but you also can activate an Extended Hint mode to enable other actions on a link beyond a left-mouse click. To enable Extended Hint mode, press the ; key, followed by a special key to set the type of action you want to perform, and finally type the number associated with a particular hint. Here is an abridged list of some hint modes you might want to use, but for the full list, check the Vimperator help page. Keep in mind that you will press the ; key before any of these keys:
s — save the destination of a link.
f — focus a particular frame.
y — yank the destination location for a link.
Y — yank the text description of a link.
Believe me, I've barely scratched the surface of Vimperator here. It really reminds me of vim in the sense that I always feel like I'm using only 10% of the available features. As with vim though, Vimperator rewards you while you progress through its learning curve. I use Vimperator on all of my Firefox sessions, and it seems weird (and slow) to me now to browse Web sites with a mouse.
Kyle Rankin is a Systems Architect in the San Francisco Bay Area and the author of a number of books, including The Official Ubuntu Server Book, Knoppix Hacks and Ubuntu Hacks. 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.
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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