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Bash Variables, Quoting, and Expansion/Unset variable

Remove a variable definition.

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Section: Variables

Unset variable

bash
bash
unset name
Explanation

Useful for cleanup and testing default expansion behavior.

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Assign variable
Assign a shell variable.
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Read variable
Expand a variable with double quotes.
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Export variable
Export a variable to child processes.
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Default value expansion
Use a fallback if variable is unset or empty.
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Assign default if variable is unset or empty.
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Require variable
Abort expansion with error if variable is missing.
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