Good evening, I was wondering if you could recommend certain shell-implementations. Now, the reason why I'm asking is that I checked out some of them and the according POSIX-specification[0] and wondered how much work it would be to reimplement it and, of course, if there is any reason to do so. Busybox's ash-implementation[1] for instance "only" adds up to around 20k LOC. dash[2], a fully POSIX-compliant shell, has less than 10k LOC.
Reading the source code I discovered lots of cruft, but learned a lot about how a shell works internally. The main issue we are facing today are the bashisms in many shell-scripts, which basically override POSIX-compliance. However, I mostly face these issues with rotten code and utils for software relying on auto*hell (hopeless). For everything else, there's the useful program called "checkbashisms"[3]. Now, what do you think? Is there any shell to recommend as suckless or do you like the idea of implementing it as a new project? Cheers FRIGN [0]: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18 [1]: http://git.busybox.net/busybox/tree/shell/ [2]: http://git.kernel.org/cgit/utils/dash/dash.git/tree/ [3]: http://sourceforge.net/projects/checkbaskisms/ -- FRIGN <d...@frign.de>
