Hostname

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.

C

Compiler: GCC 4.0.1

Standard: POSIX.1

#include <limits.h>
#include <unistd.h>

int main()
{
    char name[_POSIX_HOST_NAME_MAX+1];
    gethostname(name, _POSIX_HOST_NAME_MAX+1);
}

IDL

 hostname = GETENV('computername')

Perl

Interpreter: perl 5.8.6

use Sys::Hostname;

$name = hostname;

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]