Find configuration options Emacs was built with:

C-h v system-configuration-options RET

Display info on cursor position

C-u C-x =: what-cursor-position.

List processes

M-x proced.

This lists processes à la ps.

Report a bug

M-x report-emacs-bug.

Verify buffer style

M-x checkdoc

Insert Default Contents

(for example Emacs Lisp copyright notice and GPL license)

M-x auto-insert

Insert current directory at point

C-u M-x pwd

Fun Facts

• pi evals to 3.141592653589793, float-e evals to 2.718281828459045.

Display Time in different Time zones

• M-x world-clock: List of the different time zones to display can be customized with world-clock-list.