February 2012
Intermediate to advanced
1184 pages
37h 17m
English
Content preview from Programming Perl, 4th Editiongetprotoent
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getprotoent 
getprotoent
setprotoent STAYOPEN
endprotoentThese functions iterate through the /etc/protocols file. In list context, the
return value from getprotoent
is:
# 0 1 2 ($name, $aliases, $protocol_number) = getprotoent();
When called in scalar context, getprotoent returns only the protocol name.
The Net::proto module supports a by-name interface to this function. See
getprotent(3).
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.