[Tutor] Re: what do I use for this?

[Lee Harr]

>I want to make a script that asks for a port number and returns its 
>meaning.
>Since there are a few thousand ports, I just want to start with common 
>ones.
>What would I use in this program? An array(s)?


I usually just use grep ...


$ egrep "\b80/" /etc/services
http             80/tcp    www www-http         #World Wide Web HTTP
http             80/udp    www www-http         #World Wide Web HTTP
$ egrep "\b135/" /etc/services
loc-srv         135/tcp    epmap        #Location Service
loc-srv         135/udp    epmap        #Location Service


the \b means "word boundary" so that it does not match 180.
the / matches the slash before the tcp or udp so that it does
  not match 800, 805, etc.

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