Skip in a $GENERATE

Barry Finkel b19141 at achilles.ctd.anl.gov
Wed Mar 3 14:57:42 UTC 2004


Mike S. Whitlow" <dudeha at bluestem.prairienet.org> wrote:

>I was wondering if there is a **fancier** way, other than the common sense way of doing multiple
>rangess, to skip PTR records in a $GENERATE statement..
>
>Suppose I wanted generic "host" format records for all of the IPs in 192.168.29.0/24, except for the
>three records that I have custom PTRs for:
>
>72.29.168.192.in-addr.arpa. 86400  IN    PTR         www.funwithdollargenerate.com.
>245.29.168.192.in-addr.arpa. 86400 IN    PTR         mail.funwithdollargenerate.com.
>4.29.168.192.in-addr.arpa. 86400   IN    PTR         ftp.funwithdollargenerate.com.
>$GENERATE 1-254 $ PTR host-192-168-29-$.funwithdollargenerate.com.
>
>If you do this like I have above, .72, .245, and .4 will each have two PTR records, and that is 
>not legal.. 
>
>Is multiple ranges with the $GENERATE my only option or is there something slicker I could do here 
>to exclude those three IPs from having a generic record generated?

I have never used $GENERATE.  If I had to create records like

     $GENERATE 1-254 $ PTR host-192-168-29-$.funwithdollargenerate.com.

I would write a quick-and-dirty awk script to generate the lines.
Then I could delete any of the output lines that I did not want.
(Others might use something other than awk.)
----------------------------------------------------------------------
Barry S. Finkel
Computing and Instrumentation Solutions Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-4601
Building 222, Room D209              Internet: BSFinkel at anl.gov
Argonne, IL   60439-4828             IBMMAIL:  I1004994



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