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From: Samy Mahmoudi <samy.mahmoudi@gmail.com>
Date: Mon, 27 Apr 2020 02:15:45 +0200
Message-ID: <CAFigVTPYwgQ9V1nGBqx7o82P1ywX4aOF07z+xW-GVudjaDD0rw@mail.gmail.com>
Subject: Re: Using pkg in documentation
To: Muhammad Moinur Rahman <bofh@freebsd.org>
Cc: "ports@freebsd.org" <ports@freebsd.org>, python@freebsd.org
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>  PY=`pkg rquery -r FreeBSD "%dn" lang/python | head -n 1 | sed
"s/python//"`

You can even replace head with a sed command if you need to save some
characters on the line:
PY=`pkg rquery -r FreeBSD "%dn" lang/python | sed "s/python//;1q"`

>