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freebsd-version(1): Add -j flag to support jails

Authored by on Jul 17 2020, 12:13 PM.

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bcr added a subscriber: bcr.

OK from manpages. A useful feature, I might add.

kevans added inline comments.

We should probably warn if $opt_j == 1 already, but as a future addition it'd be neat if we could support manually-driven usage like:

freebsd-version -j1 -j2 -j3

to fetch the versions of multiple jails, but I don't think that's important to do up front.

  • freebsd-version(1): accept multiple occurrences of the -j option added inline comments.

I just took care of that, but I didn't know if I should eliminate duplicates, so the user can currently do something like:

freebsd-version -j1 -j1 -j2 -j1

And in return, we give them the versions in the same order as specified.
Please let me know if I should change this behaviour.

@kevans: by the way, on the subject of the attribution we discussed in IRC, I prefer Faraz Vahedi <>, thanks!

This revision was not accepted when it landed; it landed in state Needs Review.Oct 1 2021, 6:51 PM
This revision was automatically updated to reflect the committed changes.