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Comment by bsimpson | Hacker News Reader

For even more historical context, macOS originally shipped with tcsh. We've already done the shell transition once, and basically nobody noticed.

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That wouldn’t have broken as much, since everyone’s scripts would have a bash or sh shebang line on top. Changing what /bin/sh points to is a much riskier change.

Is that what they've done? The linked article doesn't say that.

    $ /bin/sh --version
    GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin19)
    Copyright (C) 2007 Free Software Foundation, Inc.

You can change this by pointing /var/select/sh .

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