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perl regex

by sunil9009 (Acolyte)
on Feb 09, 2013 at 23:10 UTC ( #1017998=perlquestion: print w/replies, xml ) Need Help??
sunil9009 has asked for the wisdom of the Perl Monks concerning the following question:

hi guys, i am trying to grab just the fqdn ( with domainname as from the file with the following contents.
AAA-BBB-CCC aa-dg-hj ddd-eee-fff
eg: Expected output
I tried the following code, but it resolves partially.
while (<>) { m/\s*(.*?\; print "$1 \n"; }
Any help would be greatly appreciated

Replies are listed 'Best First'.
Re: perl regex
by toolic (Bishop) on Feb 09, 2013 at 23:18 UTC
    use warnings; use strict; while (<DATA>) { while (/\s*([\S]+\.xyz\.com)/g) { print "$1 \n"; } } __DATA__ AAA-BBB-CCC aa-dg-hj ddd-eee-fff

Re: perl regex
by Kenosis (Priest) on Feb 09, 2013 at 23:19 UTC

    Try the following:

    use strict; use warnings; while (<DATA>) { print "$_\n" for grep /\.xyz\.com$/, split; } __DATA__ AAA-BBB-CCC aa-dg-hj ddd-eee-fff

Re: perl regex (fqdn)
by Anonymous Monk on Feb 09, 2013 at 23:46 UTC
      Awesome, you guys are real monks !! Enjoy the weekend.

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Node Type: perlquestion [id://1017998]
Approved by Paladin
[ambrus]: Corion: as for that, I talked with schmorp, and looked a bit more at Prima
[ambrus]: Corion: from the docs, it definitely looks like it would be possible to write an AnyEvent driver for it using Prima::File and Prima::Timer.
[ambrus]: (I haven't found an idle event.)
[ambrus]: However, I also looked at the internals, and found two interesting things:
[marto]: stupid xpath question, I have a xpath copied from the browser, is the * wildcard supposed to work for IDs? e.g. '//*[@id="*"]/ div/div/header/p/a '?
[ambrus]: The main loop for unixish systems is in https://metacpan. org/source/ KARASIK/Prima-1. 49/unix/apc_app.c. It is a hand-rolled select loop, but also always spins at least once every 0.2 seconds for some reason.
[ambrus]: marto: no, not that way. if you just want to test for an existing id attribute, then write *[@id] , or you can match a regexp to the value of that attribute like *[@id=~/something/ ]
[marto]: ambrus, thanks I ended up going with '//*[starts- with(@id, "thread_")]...

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