Re: [ANNOUNCE] Release of iptables 1.4.1-rc2

[Patrick McHardy <kaber@trash.net>]

Jan Engelhardt wrote:
> On Friday 2008-05-30 09:33, Thomas Jarosch wrote:
>>>      iptables version 1.4.1-rc2
>> I just compiled the new version and noticed a minor
>> error message during the build of the manpages:
>>
>>  GEN      matches4.man
>> grep: invalid option -- o
>> Usage: grep [OPTION]... PATTERN [FILE]...
>> Try `grep --help' for more information.
>>
>> Looks like my grep version is too old.
> 
> I think it is ok to assume -o is always there. Nov 2001, that's linux
> 2.4.14 timeframe, and most of the now-ancient distros have gone at
> least up to 2.4.20s, which should imply that they also updated their
> greps.
> 
>> Should ./configure detect that
>> or is it even possible to transform the grep call into something else?
> 
> I assume people would not be amused if we start requiring perl.
> But you can use it as a workaround...
> 	perl -ne 'print$&if/\b[A-Z0-9]+\b/'

What exactly is that grep supposed to do? How about sed
or awk?