40. Operating System Interface

This chapter is about starting and getting out of Emacs, access to values in the operating system environment, and terminal input, output, and flow control.

See section E.1 Building Emacs, for related information. See also 38. Emacs Display, for additional operating system status information pertaining to the terminal and the screen.

40.1 Starting Up Emacs		Customizing Emacs startup processing.
40.2 Getting Out of Emacs		How exiting works (permanent or temporary).
40.3 Operating System Environment		Distinguish the name and kind of system.
40.4 User Identification		Finding the name and user id of the user.
40.5 Time of Day		Getting the current time.
40.6 Time Conversion		Converting a time from numeric form to a string, or to calendrical data (or vice versa).
40.7 Timers for Delayed Execution		Setting a timer to call a function at a certain time.
40.8 Terminal Input		Recording terminal input for debugging.
40.9 Terminal Output		Recording terminal output for debugging.
40.10 Sound Output		Playing sounds on the computer's speaker.
40.11 System-Specific X11 Keysyms		Defining system-specific key symbols for X.
40.12 Flow Control		How to turn output flow control on or off.
40.13 Batch Mode		Running Emacs without terminal interaction.