tldr/pages/common/apropos.md

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# apropos
> Search in manpages, for example to find a new command.
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- Search for keyword:
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`apropos {{regular_expression}}`
- Search without restricting output to terminal width:
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`apropos -l {{regular_expression}}`
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- Search for pages that only contain all of the expressions given (AND search):
`apropos {{regular_expression_1}} -a {{regular_expression_2}} -a {{regular_expression_3}`