36. Unix Specific Services

The modules described in this chapter provide interfaces to features that are unique to the Unix operating system, or in some cases to some or many variants of it. Heres an overview:

• 36.1. posix The most common POSIX system calls
  • 36.1.1. Large File Support
  • 36.1.2. Notable Module Contents
• 36.2. pwd The password database
• 36.3. spwd The shadow password database
• 36.4. grp The group database
• 36.5. crypt Function to check Unix passwords
• 36.6. dl Call C functions in shared objects
  • 36.6.1. Dl Objects
• 36.7. termios POSIX style tty control
  • 36.7.1. Example
• 36.8. tty Terminal control functions
• 36.9. pty Pseudo-terminal utilities
• 36.10. fcntl The fcntl and ioctl system calls
• 36.11. pipes Interface to shell pipelines
  • 36.11.1. Template Objects
• 36.12. posixfile File-like objects with locking support
• 36.13. resource Resource usage information
  • 36.13.1. Resource Limits
  • 36.13.2. Resource Usage
• 36.14. nis Interface to Suns NIS (Yellow Pages)
• 36.15. syslog Unix syslog library routines
  • 36.15.1. Examples
    • 36.15.1.1. Simple example
• 36.16. commands Utilities for running commands