The Almquist shell is a variant of the [tag:bourne-shell]. Its most famous forks ares [tag:busybox] ash and [tag:dash].

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Avoiding “BASH-isms” in shell scripts

Does there exist a tool similar to Perl::Critic that will inspect your shell scripts and point out flaws, portability issues, uses of non-standard programs without fallbacks, depreciated program uses, ...