Section 4.7. access Function
Section 4.8. umask Function
Section 4.9. chmod and fchmod Functions
Section 4.10. Sticky Bit
Section 4.11. chown, fchown, and lchown Functions
Section 4.12. File Size
Section 4.13. File Truncation
Section 4.14. File Systems
Section 4.15. link, unlink, remove, and rename Functions
Section 4.16. Symbolic Links
Section 4.17. symlink and readlink Functions
Section 4.18. File Times
Section 4.19. utime Function
Section 4.20. mkdir and rmdir Functions
Section 4.21. Reading Directories
Section 4.22. chdir, fchdir, and getcwd Functions
Section 4.23. Device Special Files
Section 4.24. Summary of File Access Permission Bits
Section 4.25. Summary
Chapter 5. Standard I/O Library
Section 5.1. Introduction
Section 5.2. Streams and FILE Objects
Section 5.3. Standard Input, Standard Output, and Standard Error
Section 5.4. Buffering
Section 5.5. Opening a Stream
Section 5.6. Reading and Writing a Stream
Section 5.7. Line-at-a-Time I/O
Section 5.8. Standard I/O Efficiency
Section 5.9. Binary I/O
Section 5.10. Positioning a Stream
Section 5.11. Formatted I/O
Section 5.12. Implementation Details
Section 5.13. Temporary Files
Section 5.14. Alternatives to Standard I/O
Section 5.15. Summary
Chapter 6. System Data Files and Information
Section 6.1. Introduction
Section 6.2. Password File
Section 6.3. Shadow Passwords
Section 6.4. Group File
Section 6.5. Supplementary Group IDs
Section 6.6. Implementation Differences
Section 6.7. Other Data Files
Section 6.8. Login Accounting
Section 6.9. System Identification
Section 6.10. Time and Date Routines
Section 6.11. Summary
Chapter 7. Process Environment
Section 7.1. Introduction
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