Adventures with Chumby
The Secret Chumby Menu—It's as Easy as Pi
There's a secret menu on the Chumby, and it is fairly easy to reach. Here's what you need to do:
Bring up the control panel.
Tap on Settings.
Tap on Chumby Info.
On the info screen, in the upper-right corner is a tiny Pi symbol, tap it.
If you followed the above steps, you now are looking at a screen titled “Do you believe in the Users?”. Tron references aside, now you can do things like browse the filesystem and start up the SSH dæmon.
Chumby Software Licenses
The software on the Chumby is open source, through and through. Just take a look at the Software Licenses screen (accessed from Settings→Chumby Info→Software Licenses). Hack away at the Chumby all you want.
SSH and HTTP on the Chumby
Being based on Linux, the Chumby has a lot of functionality that isn't exposed right off the bat. An example of this is the built-in Web server and the ability to SSH into the Chumby.
The Web server, by default, has only a link to some statistics on how good the wireless connection is, but it can be extended easily.
When you SSH into the Chumby, you'll find a nice, embedded command-line environment waiting for you, courtesy of BusyBox. You even can set up cron jobs and run shell scripts.
Daniel Bartholomew lives with his wife and children in North Carolina.
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.
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