How to get the CNAME for a domain?

[Tony Finch]

Michelle Konzack <linux4michelle at gmail.com> wrote:
>
> OK, I can grep the whole /etc/bind/master/ directory, but since my  Name
> Server is responsable for several 1000 (sub)domains,  the  execution  of
> the script takes ages!

Your approach seems reasonable to me. I'm surprised it takes that long,
unless "several" is 10s or 100s of thousands!

You can make your script tighter, though I would be surprised if it
improves the performance much.

find /etc/bind/master -type f |
egrep -v '(.conf|.signed|.private|.key)$' |
xargs egrep -h "IN CNAME.*${VSERVER}" |
sed 's|\.[ \t]*IN CNAME.*||'

Tony.
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