Chapter 8: Shell Programming

Content:

1. Shell programming.
2. Ordinary and environment variables.
3. The .profile. Read and read-only commands.
4. Command line arguments.
5. exit and exit status of a command.
6. Logical operators for conditional execution.
7. The test command and its shortcut.
8. The if, while, for and case control statements.
9. The set and shift commands and handling positional parameters.
10. The here ( << ) document and trap command.
11. Simple shell program examples.
12. File inodes and the inode structure.
13. File links – hard and soft links. Filters.
14. Head and tail commands.
15. Cut and paste commands.
16. The sort command and its usage with different options.