As I could not find a free and opensource Bash manual in the ePub format I decided to convert the PDF version of the Free Software Foundation.
The original book is made freely available by the Free Software Foundation and anyone is encouraged to make contributions. So for copyleft’s sake, take it, improve it, distribute it. There is still some work to do, as I would love to get the table of contents to work properly.
The front cover is based on the o’Reilly theme and is considered satire, don’t sue me on this one. If you’re looking for a PDF version, it can be freely downloaded from the GNU website.