IMO, your script would be more useful if it included some input validation. After the line:

chomp ($wwn=<STDIN>);

I would suggest adding:

die "Input must be 16 characters\n"
  unless 16 == length $wwn;
die "Invalid hex digit '$1'\n"
  if $wwn =~ /([^[:xdigit:]])/;

[download]

Update: changed allowed input length from 10 (where did I get that number from?) to 16, as per WWN spec.

In reply to Re: Script to convert HBA WWNs to lowercase and add ":" by Not_a_Number
in thread Script to convert HBA WWNs to lowercase and add ":"[Updated] by perl514

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