apropos

Search the manual pages for names and descriptions. More information: https://manned.org/apropos.

• Search for a keyword using a regular expression:

apropos regular_expression

• Search without restricting the output to the terminal width (long output):

apropos -l regular_expression

• Search for pages that match all the expressions given:

apropos regular_expression_1 -a regular_expression_2 -a regular_expression_3