perl function getnetbyname

The getnetbyname function in Perl is used to retrieve information about a network, identified by its name.

Here's an example of using getnetbyname in Perl:

#!/usr/bin/perl

use strict;
use warnings;

# Name of the network we want to look up
my $network_name = "my_network";

# Look up the network information by name
my $net_info = getnetbyname($network_name);

if (!$net_info) {
    die "Network $network_name not found";
}

# Print the network information
print "IP address: ", inet_ntoa($net_info), "\n";

In this example, we use the getnetbyname function to retrieve information about the network named "my_network". If the network is not found, we exit with an error message.

If the network is found, we use the inet_ntoa function from the Socket module to convert the binary network address to a dotted-quad string format, which we then print to the console.

When you run this script, it will print the IP address of the network named "my_network" to the console, assuming that such a network exists and can be looked up. If the network is not found, the script will exit with an error message.

Note that getnetbyname performs a lookup based on the network name, so it may not be able to retrieve network information if the name does not correspond to a known network. Additionally, the specific behavior of getnetbyname may depend on the configuration of the system and the network services in use.