whereis

Locate the binary, source, and manual page files for a command.

• Locate binary, source and man pages for ssh:

whereis {{ssh}}

• Locate binary and man pages for ls:

whereis -bm {{ls}}

• Locate source of gcc and man pages for Git:

whereis -s {{gcc}} -m {{git}}

• Locate binaries for gcc in /usr/bin/ only:

whereis -b -B {{/usr/bin/}} -f {{gcc}}

• Locate unusual binaries (those that have more or less than one binary on the system):

whereis -u *

• Locate binaries that have unusual manual entries (binaries that have more or less than one manual installed):

whereis -u -m *