UNIX in a Nutshell: System V Edition

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whence

whence [options] commands

Korn shell only. Show whether each command name is a Unix command, a built-in command, a defined shell function, or an alias.

Options

-a

Print all interpretations of commands. ksh93 only.

-f

Skip the search for shell functions. ksh93 only.

-p

Search for the pathname of commands.

-v

Verbose output; same as type.

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