Re: latest -current broke netscape's name lookup?
awk does not copy input lines to its output unless asked; you can
ask with either an explicit print or an empty action.
Using an input file like:
gibberish
stuff
this doesn't match
here is some garbola
I don't want this file in the ouptut
here's some more stuff
and another line
and another
and another
ooh baby
hosts: files dns
don't print this either
the awk program in /etc/rc.network, without the //{next}, and
changing quit to exit, prints:
# Auto-generated, do not edit
hosts
bind
using either the old gawk or the new awk.
That //{next} may have been necessary during some phase of
script development, but is not necessary now.
Bill
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Re: latest -current broke netscape's name lookup?
David Wolfskill [EMAIL PROTECTED] writes: Of course, one of the other interesting issues with the above patch is that awk was whining about the empty regex (//). Since the idea was apparently to do nothing for such a record, it seemed simpler to just not tell awk to do anything with it, and that seemed to work in my tests.] Bzzzt! Wrong. That clause needs to be there to prevent awk from copying non-matching lines from nsswitch.conf to host.conf. If 1Tawk complains about empty regexps, just remove the regexp, but leave the clause there. DES -- Dag-Erling Smorgrav - [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: latest -current broke netscape's name lookup?
From: Dag-Erling Smorgrav [EMAIL PROTECTED]
Date: 03 Nov 2001 03:34:01 +0100
course, one of the other interesting issues with the above patch is that
awk was whining about the empty regex (//). Since the idea was
apparently to do nothing for such a record, it seemed simpler to just
not tell awk to do anything with it, and that seemed to work in my
tests.]
Bzzzt! Wrong. That clause needs to be there to prevent awk from
copying non-matching lines from nsswitch.conf to host.conf. If 1Tawk
complains about empty regexps, just remove the regexp, but leave the
clause there.
Actually, I tried that. Maybe I should have put it in braces, but I
thought I tried that, too. Hmmm... I can hack on the build machine a
bit... I was aware that sed, by default, would print its input to
output, but had thought that awk would not
OK; my error -- this does work:
Index: etc/rc.network
===
RCS file: /cvs/freebsd/src/etc/rc.network,v
retrieving revision 1.110
diff -u -r1.110 rc.network
--- etc/rc.network 1 Nov 2001 12:39:01 - 1.110
+++ etc/rc.network 3 Nov 2001 02:47:06 -
@@ -888,7 +888,7 @@
print xlat[$n];
quit;
}
-// {
+{
next;
}
' $nsswitch_conf $host_conf
Sorry about that,
david
--
David H. Wolfskill [EMAIL PROTECTED]
As a computing professional, I believe it would be unethical for me to
advise, recommend, or support the use (save possibly for personal
amusement) of any product that is or depends on any Microsoft product.
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Re: latest -current broke netscape's name lookup?
David Wolfskill [EMAIL PROTECTED] writes: Actually, I tried that. Maybe I should have put it in braces, but I thought I tried that, too. Hmmm... I can hack on the build machine a bit... I was aware that sed, by default, would print its input to output, but had thought that awk would not I don't remember if it does, or if it only prints a blank line, but I put that clause in for a reason. DES -- Dag-Erling Smorgrav - [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
