Hostname
You are encouraged to solve this task according to the task description, using any language you may know.
Find the name of the host on which the routine is running.
Ada
Works with GCC/GNAT
with GNAT.Sockets; .... Name : constant string := GNAT.Sockets.Host_Name); -------- with GNAT.Sockets with Ada.Strings.Unbounded;use Ada.Strings.Unbounded; ... Name : Unbounded_String; ... Name := TO_Unbounded(GNAT.Sockets.Host_Name); --------- with GNAT.Sockets ... Name : Access String; ... Name := new String'(GNAT.Sockets.Host_Name);
C
<c>#include <limits.h>
- include <unistd.h>
int main() {
char name[_POSIX_HOST_NAME_MAX+1]; gethostname(name, _POSIX_HOST_NAME_MAX+1); return 0;
}</c>
C#
<csharp>System.Net.Dns.GetHostName();</csharp>
Factor
host-name
Haskell
import Network.BSD main = do hostName <- getHostName putStrLn hostName
Icon
procedure main() write(&host) end
IDL
hostname = GETENV('computername')
J
> {: sdgethostname coinsert 'jsocket' [ load 'socket'
Java
<java> import java.net.*;
class DiscoverHostName {
public static void main(String[] args) { try { String hostName = InetAddress.getLocalHost().getHostName(); System.out.println(hostName); } catch (UnknownHostException e) { // Doesn't actually happen, but Java requires it be handled. } }
} </java>
Modula-3
MODULE Hostname EXPORTS Main; IMPORT IO, OSConfig; BEGIN IO.Put(OSConfig.HostName() & "\n"); END Hostname.
OCaml
<ocaml>Unix.gethostname()</ocaml>
Perl
<perl>use Sys::Hostname;
$name = hostname;</perl>
PHP
<php>echo $_SERVER['HTTP_HOST'];</php>
Pop11
lvars host = sys_host_name();
Python
<python>import socket host = socket.gethostname()</python>
Ruby
require 'socket' host = Socket.gethostname
Tcl
The basic introspection tool in TCL is the info command. It can be used to find out about the version of the current Tcl or Tk, the available commands and libraries, variables, functions, the level of recursive interpreter invocation, and, amongst a myriad other things, the name of the current machine:
set hname [info hostname]
Toka
2 import gethostname 1024 chars is-array foo foo 1024 gethostname foo type