programming-examples/perl/Network/The getservbyport function retrieves information from the _etc_services file.pl

# Format: getservbyport(PORT, PROTOCOL);

#!/bin/perl
print "What is the port number? ";
chomp($PORT=<>);

print "What is the protocol? ";
chomp($PROTOCOL=<>);

($name, $aliases, $port, $proto ) = getservbyport($PORT, $PROTOCOL);
print "The getservbyport function returns:
        name=$name
        aliases=$aliases
        port number=$port
        prototype=$protocol \n";