@0e1b5160 @5f9bb1a8 

The csh(1) is not even able to do as simple thing as this one:

% echo 1> /dev/null 2> /dev/null
Ambiguous output redirect.

There are also other reasons:
- http://harmful.cat-v.org/software/csh

Fortunatelly the FreeBSD 14.x has POSIX sh(1) as root shell:
- https://cgit.freebsd.org/src/commit/?id=d410b585b6f00a26c2de7724d6576a3ea7d548b7