https://reviews.freebsd.org/D57255 - migrating cut and rev

hi!

Nick has posted a review to capsicumize the cut and rev tools.
I'd like to see more base system utilities using our local security
things for, well, security things.

The diff is up here in review - https://reviews.freebsd.org/D57255

Does anyone have any strong opinion about this? I don't know anything
about the implementation details here nor the cost (or not) of
migrating our base tools to actually use capabilities, and I'd like to
get some eyeballs / opinions on those who may.

Thanks!


-adrian