[Bug 270441] /bin/sh - please implement '!!' support for 'sudo !!' and 'doas !!' usage

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 27 Mar 2023 02:48:08 UTC

--- Comment #4 from Slawomir Wojciech Wojtczak <vermaden@interia.pl> ---
There were many additions to /bin/sh for interactive work like completion etc.

IMHO it would be nice to have such simple yet very useful feature implemented.

CSH is terrible for interactive use for a 'power user'.

Several examples what does not work in CSH below.

<CSH> % ls /etc | while read I; do something --with "${I}"; done

<CSH> % for I in $( find /etc ); do something --with "${I}"; done

CSH is very limited ... it may have '!!' implemented and some other completions
but ... has tons of other problems.

Not to even mention simple redirections ...

<CSH> % find /etc 2> /dev/null
      find: /etc/ntp: Permission denied
      find: 2: No such file or directory

... not to even mention these (and many more) :)

- http://www.faqs.org/faqs/unix-faq/shell/csh-whynot/

- https://hybras.dev/posts/2021-02-13-reasons-to-not-use-csh/


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