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42 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.

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

• Starting Up Emacs
• Getting Out of Emacs
• Operating System Environment
• User Identification
• Time of Day
• Time Zone Rules
• Time Conversion
• Parsing and Formatting Times
• Processor Run time
• Time Calculations
• Timers for Delayed Execution
• Idle Timers
• Terminal Input
• Terminal Output
• Sound Output
• Operating on X11 Keysyms
• Batch Mode
• Session Management
• Desktop Notifications
• Notifications on File Changes
• Dynamically Loaded Libraries
• Security Considerations