A less succinct substr approach.

knoppix@Microknoppix:~$ perl -E '
> $mac = q{525400eb8b36};
> substr $mac, $_, 0, q{:}
>    for reverse grep { ! ( $_ % 2 ) } 2 .. 10;
> say $mac;'
52:54:00:eb:8b:36
knoppix@Microknoppix:~$

[download]

Cheers,

JohnGG

In reply to Re: Insert colons into a MAC address by johngg
in thread Insert colons into a MAC address by mantager

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