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http://openwrt.org/ , and embedded stuff in general, because bash is incredibly bloated.

Please, correct me if I'm wrong, but doesn't OpenWrt run on on busybox? Which is pretty much just a stripped down conglomerated bash?

bash refers to a specific shell implementation, not the whole userland utilities (AKA the "coreutils").

BusyBox combines a bunch of Linux userland utilities into one executable, to save overhead on embedded systems. It uses ash, not bash.