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Answer: List all network interfaces on the local machine?

by amitbhosale (Acolyte)
on Jun 13, 2008 at 10:12 UTC ( #691870=categorized answer: print w/replies, xml ) Need Help??

Q&A > network programming > List all network interfaces on the local machine? - Answer contributed by amitbhosale

To find the mac addresses of active network interface cards on the current machine, you can use the (non-standard) Net::Interface module:
use Net::Interface qw( mac_bin2hex ); my @all_ifs = Net::Interface->interfaces; print "Mac addresses of ethernet interfaces on this machine:\n"; for ( grep { $_->name =~ m/^eth\d/ } @all_ifs ) { print mac_bin2hex( scalar $_->hwaddress ),"\n"; }

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[Lady_Aleena]: 1 manditory, 2 optional.
[Discipulus]: my ($need,$opta,$optb ) = @_; .. if $opta..
[shmem]: all else leads to trouble, even if the third argument depends on the existence of the second. That may become brittle.
[Discipulus]: but if have case like subname(15,undef,3 ) maybe bettere named parameters
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[Lady_Aleena]: Or what Discipulus said.
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[Discipulus]: a good compromise can be my ($need, $opts_ref) = @_ a scalar and an hash reference
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