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Sample Text I Currently Parse:

untagged Interface GigabitEthernet 1/2
untagged Interface GigabitEthernet 10/2

Code I use today:

...
    $port = $2;
    ...Misc Code...
}

Sample New Text to Parse:

untagged Interface GigabitEthernet 1/2,1/3-5,1/12,1/40

Output I need to make:

...
untagged Interface GigabitEthernet 1/5
untagged Interface GigabitEthernet 1/12
untagged Interface GigabitEthernet 1/40