A shell script is a computer program designed to be run by the Unix shell, a command line interpreter. Browse through the contents of the program.
| Shell Course Contents |
| Benefits of KornShell and Bash vs. other shells |
| Differences between bash, ksh88 and ksh93 |
| Integrating scripts with external command-line tools |
| Commands and comments |
| Defining exit values |
| Applying if and case statements |
| Simplifying if logic with elif |
| Conditional looping with while and until |
| Listing for loops |
| Analyzing attributes |
| Checking file size and contents |
| Comparing strings |
| Verifying the existence of a string |
| Pattern matching and special characters |
| Redirecting standard error |
| set commands for debugging |
| Passing and accessing parameters |
| Manipulating parameters as groups |
| Defining environment and local variables |
| Specifying default values and error conditions |
| Creating and indexing arrays |
| Processing array contents with special variables |
| Extracting substrings |
| Determining string length |
| Arithmetic for and while loops |
| Writing mathematical expressions: (( )), $(( )) and let |
| Functions vs. scripts |
| Parameters and variables |
| Finding your library with PATH |
| Dot . and source commands |
| Scripting file and directory management |
| Unraveling the secrets of exec: opening and closing multiple files |
| Handling errors |
| Processing external events |
| Handling and sending signals: trap and kill |
| Connecting to a network server |
| Exchanging data with a network server |
| Checking and modifying environment variables |
| Using getopts to process command-line options |
| Accepting command-line arguments |
| Employing select to create a menu interface |
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