bitmath is a Python module I wrote for working with file size units (ex:
64kB) as objects. You can use them just like you would use regular numbers in python. It’s full of other functionality as well. Objects have native ‘convert to $unit‘ methods, support native arithmetic, are sortable, and include a ‘best human readable prefix’ method.
Since March 2014, bitmath had only been available via PyPi and Fedora/EPEL repositories. Now, as of July 2nd 2016, bitmath is natively available to Ubuntu users by means of a new Personal Package Archive (PPA) hosting bitmath builds for Xenial, Wily, Vivid, Trusty, and Precise.
Ubuntu users can install bitmath in the following way:
I’m very excited (and proud) to announce that on March 3rd, 2016 I reached a long-term goal I set for myself 3½ years ago, by self-publishing my first book, The Linux Sysadmin’s Guide to Virtual Disks. The book is published under my new brand, Scribe’s Guides.
The first edition of The Virtual Disk Guide has been a long time coming. Nearly 7 years of on-and-off writing have gone into it. I’m relieved to have made it this far.
I view the book as the definitive reference guide for virtual disk related activities — clear, concise, accurate, and approachable to readers of all skill levels— but that’s just my opinion. You can decide that for yourself.
The book is quite thoroughly cited and annotated with nearly 100 individual footnotes and references to additional learning resources. The book weighs in at around 80 pages, 7 chapters, and two technical appendices. Here’s the byline from the scribesguides.com website:
The Linux Sysadmin’s Guide to Virtual Disks demonstrates the core concepts of virtual disk management. Real-world problems are covered in the book’s “Cookbook” section. Other topics include: helper utilities, disk formats, troubleshooting tips, performance considerations, and comprehensive appendices.
Or do both! Say “thanks!” by purchasing a copy, and then enjoy the latest builds online forever, for free!
 – The original first edition text is also available for free in PDF and HTML formats and is identical to the print copy
The official publishing of The Virtual Disk Guide does not change anything about it’s openness or your freedom to remix it however you wish. The book is still freely licensed under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).
All of the source material used to build the book’s body material and cover images are still free and open source, covered under the same license. All digital media displayed in the book, such as figures and the cover art, was created using free/open source software. Each media item was created and saved in digital formats unencumbered by patents.
As ever, if you identify errors in the book or have thought of a way to improve it, please open a ticket on the GitHub issue tracker. If you’ve read a copy of the book already and would like to contribute a review or statement, feel free to reach out to me. Find my email in a github commit, or look at my other contact methods under the author highlight panel on scribesguides.com.
The experience of writing and publishing this book has taught me much, and it’s time to spread that information. Check back soon for a follow-up post I’m writing which covers more of the technical side of self-publishing. Specifically, self-publishing a DocBook 5 document at the on-demand printing website lulu.com.
Let me be explicitly clear, this is not a promotion for lulu.com.
Rather, the post will review some of the technical challenges I encountered (old examples: #1, #2, #3) during the publishing process, including challenges specific to Lulu. Such as, how I customized the PDF output from dblatex to look more personal and less generically academic, why I had to order three proof copies of the book before the cover matter printed in decent quality, and how to adjust your inner and outer page margins so there’s a reasonable amount of whitespace between the spine/binding and the body text.
I have a feeling that by the time I’m done with the blog posts I’m going to have written another book of documentation about how I wrote a book of documentation
It’s been quite a while since I’ve posted any bitmath updates (bitmath is a Python module I wrote which simplifies many facets of interacting with file sizes in various units as python objects) . In fact, it seems that the last time I wrote about bitmath here was back in 2014 when 1.0.8 was released! So here is an update covering everything post 1.0.8 up to 1.3.0.
bitmath, you can use to do simple conversions right in your shell [docs]!
To help with the Fedora Python3 Porting project, bitmath now comes in two variants in Fedora/EPEL repositories (BZ1282560). The Fedora and EPEL updates are now in the repos. TIP:
python2-bitmath will obsolete the
python-bitmath package. Do a
update‘ operation just to make sure you catch it.
The PyPi release has already been pushed to stable.
Back in bitmath-1.0.8 we had 150 unit tests. The latest release has almost 200! Go testing!
I’ve made several posts previously about the difficulties I’ve had with Eclipse and Gnome’s Adwaita theme: menu elements that have too little contrast to read, poor color choices, etc. I even took a stab at creating my own GTK3 theme to deal with the problem.
I’m happy to report that my efforts are now obsolete. Eclipse Mars (now available in Fedora 22) has made significant improvements to the Dark theme (set under Preferences -> General -> Appearance). However, if you’re using Adwaita, the top menu bar is gray text on grey background. The simple fix is to change to the Adwaita Dark theme just for Eclipse. Here’s how:
/usr/share/applications/eclipse.desktopin your text editor of choice.
Execline to read
Exec=env GTK_THEME=Adwaita:dark eclipse
The one gotcha is that when you update the eclipse-platform package, it will destroy the changes you’ve made in the desktop file so you’ll have to redo them. But that’s a small price to pay in my opinion.
As I noted in an earlier post, Eclipse on Fedora 22 has some usability problems with the colors it uses. Eclipse uses GTK 3 for a lot of the theming of the interface. With the Gnome Adwaita theme, several of the drop-down dialogs (like Content Assist) have very little contrast between the background and foreground of a selected item. The result is the highlighted text is extremely difficult to read. Your only recourse is to mess with GTK settings.
I had managed to address an issue with the Content Assist drop-down only to run into another issue with the Quick Outline drop-down. Finally I gave up and said, “to heck with it, I’m going to redo the whole thing.” To check out the result I came up with, head over to the Eclipse Graphene repo.
Here’s an example: