Aside from the material in this book, many other sources of information about Linux system programming are available. This appendix provides a short introduction to some of them.

Manual pages

Manual pages are accessible via the man command. (The command man man describes how to use man to read manual pages.) The manual pages are divided into numbered sections that categorize information as follows:

  1. Programs and shell commands: commands executed by users at the shell prompt.

  2. System calls: Linux system calls.

  3. Library functions: standard C library functions (as well as many other library functions).

  4. Special files: special files, such as device files.

  5. File formats: formats of files such as the system password (/etc/passwd ...

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