Variable: operating-system-release
operating-system-release is a variable defined in editfns.c.
This variable is obsolete since 28.1.
Value
"6.19.6-zen1-1-zen"
Documentation
The kernel version of the operating system on which Emacs is running.
The value is a string. It can also be nil if Emacs doesn't know how to get the kernel version on the underlying OS.
Source Code
// Defined in /usr/src/emacs/src/editfns.c
DEFVAR_LISP ("operating-system-release", Voperating_system_release,
doc: /* The kernel version of the operating system on which Emacs is running.
The value is a string. It can also be nil if Emacs doesn't
know how to get the kernel version on the underlying OS. */);