extern crate netdb;
use std::env;
use netdb::hosts::get_host_by_name;
fn main() {
let mut args = env::args();
let cmd = args.next().unwrap();
let name = match args.next() {
None => {
println!("Usage: {} <hostname>", cmd);
return;
}
Some(name) => name
};
match get_host_by_name(&name) {
Ok(Some(ent)) => {
println!("{}", ent.name());
if !ent.aliases().is_empty() {
println!(" Aliases:");
for name in ent.aliases() {
println!(" {}", name);
}
}
println!(" Addresses:");
for addr in ent.addrs() {
println!(" {}", addr);
}
}
Ok(None) => println!("Not found."),
Err(err) => println!("Error: {:?}", err),
}
}