unhash [ -adfms ] name ...
       Remove   the  element  named  name from an internal
       default is remove elements from  the  command  hash
       option   causes  unhash to remove regular or global
       when removing a global aliases  that  the  argument
       to   prevent  it  from  being expanded before being
       command.  The -s option  causes  unhash  to  remove
       The  -f  option causes unhash to remove shell func-
       options causes unhash to remove named  directories.
       flag   is   given  the  arguments are taken as pat-
       quoted) and all elements of the corresponding  hash
       matching names will be removed.

unalias
       Same as unhash -a.

unfunction
       Same as unhash -f.
