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unhash [ -adfms ] name ...
Remove the element named name from an internal hash table. The
default is remove elements from the command hash table. The -a
option causes unhash to remove regular or global aliases; note
when removing a global aliases that the argument must be quoted
to prevent it from being expanded before being passed to the
command. The -s option causes unhash to remove suffix aliases.
The -f option causes unhash to remove shell functions. The -d
options causes unhash to remove named directories. If the -m
flag is given the arguments are taken as patterns (should be
quoted) and all elements of the corresponding hash table with
matching names will be removed.
unalias [ -ams ] name ...
Removes aliases. This command works the same as unhash -a, ex-
cept that the -a option removes all regular or global aliases,
or with -s all suffix aliases: in this case no name arguments
may appear. The options -m (remove by pattern) and -s without
-a (remove listed suffix aliases) behave as for unhash -a. Note
that the meaning of -a is different between unalias and unhash.
unfunction
Same as unhash -f.
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