PART I. 1. INTRODUCTION. Why Unix? Computer System. The UNIX Environment. UNIX Structure. Accessing UNIX. Commands. Common Commands. Other Useful Commands. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 2. BASIC vi EDITOR. Editor Concepts. The vi Editor. Modes. Commands. Two Practice Sessions. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 3. FILE SYSTEMS. Filenames. File Types. Regular Files. Directories. File System Implementation. Operations Unique to Directories. Operations Unique to Regular Files. Operations Common to Both. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions 4. SECURITY AND FILE PERMISSION. Users and Groups. Security Levels. Changing Permissions. User Masks. Changing Ownership and Group. Key Terms. Commands. Tips. Summary. Practice Set. Lab Sessions. 5. INTRODUCTION TO SHELLS. UNIX Session. Standard Streams. Redirection. Pipes. tee Command. Command Execution. Command-Line Editing. Quotes. Command Substitution. Job control. Aliases. Variables. Predefined Variables. Options. Shell/Environment Customization. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 6. FILTERS. Filters and Pipes. Concatenating Files. Display Beginning and End of Files. Cut and Paste. Sorting. Translating Characters. Files with Duplicate Lines. Count Characters, Words, or Lines. Comparing Files. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 7. COMMUNICATIONS. User Communication. Electronic Mail. Remote Access. File Transfer. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 8. vi AND ex. vi Editor. Local Commands in vi. Range Commands in vi. Global Commands in vi. Rearrange Text in vi. ex Editor. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 9. REGULAR EXPRESSIONS. Atoms. Operators. Key Terms. Tips. Commands. Summary. Practice Set. 10. grep. Operation. grep Family. Examples. Searching for File Content. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 11. sed. Scripts. Operations. Addresses. Commands. Applications. grep and sed. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 12. awk. Execution. Fields and Records. Scripts. Operations. Patterns. Actions. Associative Arrays. String Functions. Mathematical Functions. User-Defined Functions. Using System Commands in awk. Applications. awk and grep. sed and awk. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. PART II. 13. INTERACTIVE KORN SHELL. Korn Shell Features. Two Special Files. Variables. Output. Input. Exit Status of a Command. eval Command. Environmental Variables. Options. Startup Scripts. Command History. Command Execution Process. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 14. KORN SHELL PROGRAMMING. Basic Script Concepts. Expressions. Decisions: Making Selections. Repetition. Special Parameters and Variables. Changing Positional Parameters. Argument Validation. Debugging Scripts. Script Examples. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 15. KORN SHELL ADVANCED PROGRAMMING. Variable Evaluation and Substitution. String Manipulation. Here Document. Functions. Arrays. Signals. Built-in Commands. Scripting Techniques. Shell Environment and Script. Script Examples. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 16. INTERACTIVE C SHELL. C Shell Features. Two Special Files. Variables. Output. Input. Exit Status of a Command. eval Command. Environmental Variables. On-Off Variables. Startup and Shutdown Scripts. Command History. Command Execution Scripts. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 17. C SHELL PROGRAMMING. Basic Script Concepts. Expressions. Decisions: Making Selections. Repetition. Special Parameters. Changing Positional Parameters. Argument Validation. Debugging Scripts. Script Examples. Key Terms. Tips. Commands. Summary. Practice Set. Lab Sessions. 18. C SHELL ADVANCED PROGRAMMING. Variable Evaluation. String Manipulation. Here Docum