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by throw0101b 1042 days ago
> Because if you are not 100% compatible with bourne shell you shouldn't automatically execute script made for bourne shell.

The same can be said about bash.

> It is fine with bash because it is bourne shell compatible.

I was running an HPC cluster when we upgraded Debian during the bash->dash change, and there were all sorts of problems: IIRC most folks simply changed their scripts from /bin/sh to /bin/bash.