CU019 - UNIX C Shell Programming

Length: 4 Days
See Also "UNIX for Programmers"

Description

Course Objectives

1. state how the shell functions as a user interface and command line interpreter;
2. execute commands using foreground and background processing;
3. modify built-in shell variables and create and use user-defined shell variables;
4. use I/O redirection, pipes, quoting, and file name expansion mechanisms;
5. create structured shell programs which accept and use positional parameters and exported variables;
6. use the shell flow control and conditional branching constructs (while, foreach, switch, if, etc.);
7. state the order in which command line arguments are evaluated;
8. use shell debugging mechanisms to improve shell program efficiency and detect and correct errors.

Course Materials

1. UNIX C Shell Programming Student Guide and course notes.

Prerequisites

1. UX001 - Fundamentals of UNIX, UX021 - Fundamentals of AIX, or equivalent experience using UNIX.

Course Content

1. OVERVIEW OF THE SHELL
   1. Shell Overview
   2. Interpreting Commands
   3. Logging In
   4. Processes
      1. Process Creation
      2. fork and exec
   5. User Environment
   6. Setting and Printing Variables
   7. I/O Redirection
   8. Pipelines
   9. File Name Generation
   10. Quoting
   11. Command Substitution
   12. Background Processing
   13. Tilde Substitution
   14. Arithmetic Evaluation
   15. Environment
   16. Job Control
   17. History and Alias Mechanisms
   18. Command Line Editing
   19. Login and Setup Files
       1. .login, .cshrc, and .logout
2. CREATING AND EXECUTING SHELL PROGRAMS
   1. Creating a Shell Program
   2. Executing a Shell Program
   3. Debugging Shell Programs
3. SHELL VARIABLES & PARAMETERS
   1. Variables
   2. Assigning Variables
   3. Printing Variables
   4. Reading Input
   5. Variable Types
   6. Exporting Variables
   7. Variable Arrays
   8. Predefined Variables
   9. Environment Variables
   10. Special Shell Parameters
   11. Positional Parameters
   12. shift Command
   13. set and setenv Commands
   14. unset Command
   15. The source Command
4. CONDITIONAL TESTING
   1. if Statement
   2. The switch Statement
   3. exit Command
5. LOOPING MECHANISMS
   1. The foreach Loop
   2. The while Loop
   3. break, continue, and goto Statements
6. SUBSHELLS
7. PROGRAMMING CONSIDERATIONS
   1. Resource Consumption
   2. Processes and Files
   3. Programming Hints
8. COURSE CONCLUSION

Course Flyer	C.E.I. Flyer Course Offering 3mb AIX | HPUX | Linux | Solaris General UNIX | Web | Perl

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