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(elisp)System Interface

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Operating System Interface
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   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.

   Note: Building Emacs, for related information.  See also Note:
Display, for additional operating system status information
pertaining to the terminal and the screen.

Starting Up

Customizing Emacs startup processing.

Getting Out

How exiting works (permanent or temporary).

System Environment

Distinguish the name and kind of system.

User Identification

Finding the name and user id of the user.

Time of Day

Getting the current time.

Time Conversion

Converting a time from numeric form to a string, or

to calendrical data (or vice versa).

Timers

Setting a timer to call a function at a certain time.

Terminal Input

Recording terminal input for debugging.

Terminal Output

Recording terminal output for debugging.

Sound Output

Playing sounds on the computer's speaker.

Special Keysyms

Defining system-specific key symbols for X.

Flow Control

How to turn output flow control on or off.

Batch Mode

Running Emacs without terminal interaction.