Unix Shell Programming

1. Introduction.


2. A Quick Review of the Basics.


Some Basic Commands. Working with Files. Working with Directories. Filename Substitution. Standard Input/Output and I/O Redirection. Pipes. Standard Error. More on Commands. Command Summary. Exercises.



3. What Is the Shell?


The Kernel and the Utilities. The Login Shell. Typing Commands to the Shell. The Shells Responsibilities.



4. Tools of the Trade.


Regular Expressions. cut. paste. sed. tr. grep. sort. uniq. Exercises.



5. And Away We Go.


Command Files. Variables. Built-in Integer Arithmetic. Exercises.



6. Can I Quote You on That?


The Single Quote. The Double Quote. The Backslash. Command Substitution. Exercises.



7. Passing Arguments.


The shift Command. Exercises.



8. Decisions, Decisions.


Exit Status. The test Command. The else Construct. The exit Command. The elif Construct. The case Command. The Null Command :. The && and || Constructs. Exercises.



9. Round and Round She Goes.


The for Command. The until Command. More on Loops. The getopts Command. Exercises.



10. Reading and Printing Data.


The read Command. The printf Command. Exercises.



11. Your Environment.


Local Variables. Exported Variables. PS1 and PS2. HOME, James. Your PATH. Your Current Directory. More on Subshells. Your .profile File. The TERM Variable. The TZ Variable. Exercises.



12. More on Parameters.


Parameter Substitution. The $0 Variable. The set Command. The IFS Variable. The readonly Command. The unset Command. Exercises.



13. Loose Ends.


The eval Command. The wait Command. The trap Command. More on I/O. Functions. The type Command. Exercises.



14. Rolo Revisited.


Design Considerations. rolo. add. Lu display. rem. change. listall. Sample Output. Exercises.



15. Interactive and Nonstandard Shell Features.


Getting the Right Shell. The ENV File. Command-Line Editing. Command History. The vi Line Edit Mode. The Line Edit Mode. Other Ways to Access Your History. Functions. Integer Arithmetic. The alias Command. Arrays. Job Control. The Restricted Shell rsh. Miscellaneous Features. Compatibility Summary. Exercises.



Appendix A. Shell Summary.


Startup. Commands. Comments. Parameters and Variables. Command Re-entry. Quoting. Filename Substitution. I/O Redirection. Exported Variables and Subshell Execution. Functions. Job Control. Command Summary.



Appendix B. For More Information.


Online Documentation. Documentation on the Web. Books.