[hobbit] Some PCRE assistance
Rich Smrcina
rsmrcina at wi.rr.com
Tue Jan 16 12:18:45 CET 2007
Yes, that is the format of the list.
I actually solved the problem another way, I always thought the heading
line was superfluous in this case anyway.
This is for a procs test for the z/VM client that I'm writing. In this
case a dispatchable unit of work is a virtual machine, so the 'process'
list contain the names of the virtual machines. Well since it is just a
list of names and not process numbers, CPU Time, command, etc, I just
changed the back-end client code to not require the heading line coming
from the client.
Thanks to all who responded.
Charles Goyard wrote:
> Hi,
>
> Rich Smrcina wrote :
>> I've checked the PCRE tutorial and several other sites and I can not
>> find a good match to what I'm trying to do. I've also run several
>> iterations through pcretest with no joy.
>>
>> I have a list of users (actually virtual machine names) with the heading
>> 'UserID'. I would like to set up a regex to match any of them, except
>> for the heading. Basically, to count the machines, but ignore the
>> heading line.
>>
>> I've tried variations of "(!Userid|.*)" with no luck.
>
> I guess you want to do it something like the procs column.
>
> If the format is :
>
> Userid
> john
> jane
>
> you might want to try that :
>
> ^(?!Userid)(.+)
>
> (Search the string "look-ahead assertion" in perlre(1) for some
> explanation of this. Don't forget to add the preceding % in your
> configfile.
>
> It basically permits one to make pattern match only if they are not
> preceded or followed by certain expressions. (Very useful when
> piggy-parsing HTML :).
>
>
--
Rich Smrcina
VM Assist, Inc.
Phone: 414-491-6001
Ans Service: 360-715-2467
rich.smrcina at vmassist.com
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