--0ntfKIWw70PvrIHh
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Tue, Dec 28, 2004 at 08:11:51PM -0500, Todd Vierling wrote:
  | Use the construct:
  |=20
  | : ${foo:=3DNO}
  |=20
  | This won't override an existing setting.  I use this in all kinds of sh=
ell
  | scripts, and I believe autoconf uses it too.


I have used this techinique in rc.d scripts as well.

It is important to use it correctly, and only assign the default
after rc.conf(5) has been (re)loaded.  I.e:

	name=3Dfoo
	rcvar=3D"$name"

		# [...]

	load_rc_config $name
	: ${foo:=3DNO}
	run_rc_config

--0ntfKIWw70PvrIHh
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.6 (NetBSD)

iD8DBQFB1rgCpBhtmn8zJHIRAgI1AJ9kA8Dn1s9JUzXslwEXSuHkkf58JACfY6N8
LYDajIhpESBA4+tGpz/ooMo=
=DPjR
-----END PGP SIGNATURE-----

--0ntfKIWw70PvrIHh--