may be no /etc/mail/sendmail.cf so don't include that in the check
for whether or not to run /usr/sbin/sendmail.  Instead, check for
the existence of /etc/mailer.conf.  Pointed out by Theo.

/dev/null too.  Otherwise, if there is a name resolution problem
the rc files may finish before sendmail forks into a daemon and it
will complain about EBADF on stderr (since init revoked it).
From a discussion between Theo and myself.

$securelevel; noted by ho@

- Add ntpdate and rdate rc knobs
Approved-And-Assisted-By: millert

on reboot timing out on DNS problems.

- new installs wont have existing ifaliases
- updates dont touch /etc
- manual updates of /etc/ should know what they're doing anyway
fwiw, see hostname.if(5) alias functionality has moved here for better
overall network configurability

add commented out entry into sysctl.conf for vfs.nfs.iothreads

in /etc/mail.

depending on IFS).  This replaces the ed and sed code previously
used to do this.

when no neighboring router is found (rare case).  this is to conform
strictly to the ND spec.  it is safe to leave it empty.

/usr/local/sbin/sshd instead, if it is there.

when it doesn't exist.

mistaken assumption.  Noted by dynamo@ime.net.  Fixed by moving the
check for meta character expansion to be inside the two for loops.
They are expanded by simple assignment.

Probably just paranoia (since /var/tmp/vi.recover is created the
first time the machine is booted) but it can't hurt.

to read from them (this is a user-writable directory so it is
possible to play games).  Fixes a possible DOS noted by dynamo@ime.net.
If it's not a regular file, we delete it.

don't want them fetched from YP, it will find them in the current directory.