Turn off Path Hashing

Usage:  unhash [-h-]

   Normally, a hashing mechanism is used in an attempt to speed up
   searches of the path directories.  If you're performing system
   administration work, moving files in the path directories, the
   hash mechanism may not always reflect the latest changes you've
   made.  The unhash command can be used to turn hashing off, setting.
   nohashing = 1.

   (See also the rehash and hashstat commands.)

Options:

   -h   Help.  (This screen.)
   --   End of options.

(The slash, "/", may be used instead of a minus to introduce
options.  To specify a different set of characters to introduce
options, use the SWITCHCHARS environmental variable.)