| Introduction to POSIX shell Scripts |
Shell Scripting |
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What is a shell script? |
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Script execution |
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The sub-process environment |
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shell features |
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Posix versus Korn Shell |
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Recommended shell format |
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Planning to write a shell script |
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Portability issues |
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| Portability issues |
Shell Scope Design |
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Basic expressions |
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More complex patterns |
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Pattern combinations |
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Reading user input |
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Creating positional parameters |
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Conditional substitution |
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External influences |
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| Executing the Appropriate Shell |
Variables |
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Creating Integer-only Variables |
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Base 10 and Others |
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Working with arithmetic operators and data |
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Substituting and counting |
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Using integer variables as element numbers |
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| Logic Overview with "if" & "case" |
Test conditions & loops |
| Signals & traps |
Functions |
| Using RegExp controls |
Other |
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Regular expressions |
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Metacharacters |
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The grep command |
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'awk' user defined variables |
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Environment variables |
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Arithmetic operations |
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String manipulation |
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Formatted output |
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Command line arguments |
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Sed & awk |
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