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- hash name path
- Puts name in the command hash table, associating it
- with the pathname path. Whenever name is used as a
- command argument, the shell will try to execute the
- file given by path.
-
- unhash [ -m ] name ...
- The entry in the command hash table, if any, for
- each name is removed. If the -m flag is given the
- arguments are taken as patterns (should be quoted)
- and all entries for commands with matching names
- will be removed.
-