When piping to awk, it's almost always an anti-pattern to use 'grep'
first.
When not in a pipeline, sometimes it is faster to use tail, as awk
must process all the lines in the input stream, and won't 'seek'.
In a pipeline, both grep and awk must process all lines, so we might
as well skip the extra process creation for tail and just use awk
for all the processing.
Reviewed by: jilles
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D19441
There are many cases which this code does not handle (e.g. ZFS mirrors)
but the code can handle the single-disk case -- so it's enough to take
care of the "disk image which gets booted into a VM with a larger than
expected disk" case for which this firstboot script was created.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D19095
The reasons for this are forward looking to pkgbase:
* /sbin/init is a special binary; try not to replace it with
every package update because an rc script was touched.
(a follow-up commit will make init its own package)
* having rc in its own place will allow more easy replacement
of the rc framework with alternatives, such as openrc.
Discussed with: brd (during BSDCam), kmoore
Requested by: cem, bz
PR: 231522
Approved by: re (gjb)
