Re:Zx 3.0
by hulitu on Monday August 16, 2021 @12:02PM
(#28199591)
I thought that was sh (i.e. bourne shell). As far as i remember bash is not the default shell on a lot of unices.
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My understanding is that sh is a specification, not an implementation.
Most images will either have bash or ash installed. ash, being lightweight, is the choice of alpine and related distros.
This is a bit of a Linux specific view of the universe. Yes posix has a standard for how sh should work. But there were specific implementations of sh, and you would get those on commercial Unix or *BSD.
Later shells came in and filled some gaps. OpenBSD still has ksh by default. Linux distros had bash as their /bin/sh.