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Unix Shell Programming is a tutorial aimed at helping Unix and Linux users get optimal performance out of their operating out of their operating system. It shows them how to take control of their systems and work efficiently by harnessing the power of the shell to solve common problems. The reader learns everything he or she needs to know to customize the way a Unix system responds.
The vast majority of Unix users utilize the Korn shell or some variant of the Bourne shell, such as bash. Three are covered in the third edition of Unix Shell Programming. It begins with a generalized tutorial of Unix and tools and then moves into detailed coverage of shell programming.
Topics covered include: regular expressions, the kernel and the utilities, command files, parameters, manipulating text filters, understanding and debugging shell scripts, creating and utilizing variables, tools, processes, and customizing the shell.
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.
The Kernel and the Utilities. The Login Shell. Typing Commands to the Shell. The Shells Responsibilities.
Regular Expressions. cut. paste. sed. tr. grep. sort. uniq. Exercises.
Command Files. Variables. Built-in Integer Arithmetic. Exercises.
The Single Quote. The Double Quote. The Backslash. Command Substitution. Exercises.
The shift Command. Exercises.
Exit Status. The test Command. The else Construct. The exit Command. The elif Construct. The case Command. The Null Command :. The && and || Constructs. Exercises.
The for Command. The until Command. More on Loops. The getopts Command. Exercises.
The read Command. The printf Command. Exercises.
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.
Parameter Substitution. The $0 Variable. The set Command. The IFS Variable. The readonly Command. The unset Command. Exercises.
The eval Command. The wait Command. The trap Command. More on I/O. Functions. The type Command. Exercises.
Design Considerations. rolo. add. Lu display. rem. change. listall. Sample Output. Exercises.
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.
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.
Online Documentation. Documentation on the Web. Books.