Korn Shell Script Writing

A shell script is an executable file which is executed by the shell line-by-line. ….. script. Make the lsc shell script executable and run it.

For methods 2 and 3 the shell runs another copy of itself as
asubprocess. Pictorially, the difference between Methods

Basic Shell Programming
• Creating a Shell Script
• Executing a Shell Script
• Functions
• Precedence of Commands
• eval
• Shell Variables
• Assigning Variable Names

• Null Variables
• Special Shell Variables
• Parameter Substitution
• Special Pattern Matching
Features
• Command Substitution
• Exercises

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