Shell Programming

Course Length - 3 Days

Course Description In this three-day Shell Programming course, students learn to read, write, and debug shell scripts, thus increasing productivity by taking full advantage of the UNIX shell.

Course Topics: Shells and Shell Scripts The Shell Environment Functions Useful Tools Conditionals Loops The sed Editor awk

Course Prerequisites Fundamentals of UNIX or equivalent experience is a prerequisite for this course.

Who Should Attend? UNIX users, programmers, and system administrators.

Suggested Supplemental Reference Learning the Korn Shell, O'Reilly & Assoc., ISBN 1565920546


Course Outline:
Shells and Shell Scripts
What is a Shell? What Does a Shell Do? Available Shells Shell Script Basics Child Processes - Subshells
The Shell Environment
Startup Scripts Variables Local vs. Global Variables Special Reserved Variables Command Line Arguments The shift Statement Using set The read Statement Quoting Characters Command Substitution Quoting and Regular Expressions Tilde Expansion in the Korn Shell
Functions
Shell Functions Positional Parameters More on Functions Korn Shell Function Files
Useful Tools
Command Punctuation The test Statement Variable Types Bourne Shell Arithmetic Operations Korn Shell Arithmetic Operations Korn Shell Arrays Debugging Shell Scripts
Conditionals
The if Statement Numeric and String Comparison if/then/else if/then/elif/else The case Statement
Loops
The while Loop The until Loop The for Loop break and continue The Korn Shell select Loop The PS3 System Variable Terminating the select Loop Submenus with the select Loop
The sed Editor
What is sed? sed Editing Commands Printing Text with sed Substituting Text with sed Deleting Text with sed Multiple Editing Commands with sed sed Script Files Reading Text in From a File Writing Output Files with sed
awk
awk Syntax Built-in awk Variables Printing with awk Pattern Searching with awk awk Scripts Additional Variable Use