[erlang-questions] TCP open port count

[Wes James]

Via os:cmd??

{Open_ports_pre, _} = string:to_integer(os:cmd("netstat -a | egrep
'Proto|LISTEN' | wc -l")).

Open_ports = Open_ports_pre-2.

-wes

On Fri, Feb 13, 2015 at 9:03 AM, Roberto Ostinelli <roberto@REDACTED>
wrote:

> Dear list,
> Is there a system command that can easily tell me how many TCP ports are
> open on a system?
>
> erlang:system_info(port_count)
>
> This returns all port, I'd like to know only the TCP ones.
>
> Thank you,
> r.
>
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>
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