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APROPOS(1)
APROPOS(1) FreeBSD General Commands Manual APROPOS(1)

NAME

apropos, whatiskeyword search whatis documentation databases

SYNOPSIS

apropos [ -d] keyword ...

whatis [ -d] keyword ...

DESCRIPTION

The apropos utility searches a set of databases looking for documentation matching each keyword and displays the results. The whatis utility does the same search but only on complete words.
-d
Print extra debugging information.

The keyword is simply passed to grep(1) allowing for extended regular expression matches.

ENVIRONMENT

The following environment variables affect the execution of apropos:
MANLOCALES, MANPATH, PATH
Used to find the location of the whatis database files. See manpath(1) for additional information.
PAGER
Program used to display files. If unset, more -s is used.

DIAGNOSTICS

The apropos utility exits 0 if a keyword matched and 1 if no keywords are matched or no whatis databases are found.
September 1, 2010 FreeBSD