Tcl_GetHostName - get the name of the local host

Tcl_GetHostName  is  a  utility  procedure  used  by some of the Tcl commands.  It returns a pointer to a
       string containing the name for the current machine, or an empty string if the name cannot be  determined.
       The string is statically allocated, and the caller must not modify of free it.

       hostname

Tcl                                                    8.3                                 Tcl_GetHostName(3tcl)

       Tcl_GetHostName - get the name of the local host

#include<tcl.h>

       const char *
       Tcl_GetHostName()
________________________________________________________________________________________________________________