On Thu, 2009-03-12 at 00:39 +0000, Mike -- EMAIL IGNORED wrote: > On Thu, 12 Mar 2009 00:35:03 +0000, Mike -- EMAIL IGNORED wrote: > > > On Wed, 11 Mar 2009 19:46:53 -0430, Patrick O'Callaghan wrote: > > > >> On Thu, 2009-03-12 at 00:13 +0000, Mike -- EMAIL IGNORED wrote: > >>> On Wed, 11 Mar 2009 19:31:34 -0430, Patrick O'Callaghan wrote: > >>> > >>> > On Wed, 2009-03-11 at 23:32 +0000, Mike -- EMAIL IGNORED wrote: > >>> >> The head suggestion won't work, because in the above example, it is > >>> >> the second line I want. > >>> > > >>> > A trivial excercise for old Shell hands, e.g. > >>> > > >>> > program | head -n 2 | tail -n 1 > >>> > > >>> > or > >>> > > >>> > program | sed -n 2p > >>> > > >>> > poc > >>> > >>> Yes, but the dig command sometimes returns the result on the first > >>> line, and sometimes on the second, so it is necessary to test what you > >>> get. > >> > >> You haven't so far said which of the lines you are interested in. > >> Perhaps you can use grep on a pattern. > >> > >> poc > > > > How about: > > > > grep "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]" > > > > ? > > Can it be done more concisely? Still, one of the numbers might exceed > > 255 ... unlikely. > > > > Mike. > > I forgot the final + . You also forgot the initial ^ and final $, without which the match could trigger on something other than a pure IP number (unlikely in practice but not impossible e.g. abc.1.2.3.4.example.com). poc -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
