Function: system-name
system-name is a function defined in editfns.c.
Signature
(system-name)
Documentation
Return the host name of the machine you are running on, as a string.
Probably introduced at or before Emacs version 19.23.
Source Code
// Defined in /usr/src/emacs/src/editfns.c
{
if (EQ (Vsystem_name, cached_system_name))
init_and_cache_system_name ();
return Vsystem_name;
}