unalias - Removes alias definitions
The C shell has a built-in version of the unalias command. If you are
using the C shell, and want to guarantee that you are using the com-
mand described here, you must specify the full path /usr/bin/unalias.
See the csh(1) reference page for a description of the built-in com-
Interfaces documented on this reference page conform to industry standards
Refer to the standards(5) reference page for more information about indus-
try standards and associated tags.
-a Removes all alias definitions from the current shell execution environ-
The name of an alias to be removed.
The unalias utility removes the definition for each alias name specified.
The aliases are removed from the current shell execution environment.
The following exit values are returned:
0 Successful completion.
>>0 One of the alias-name operands specified did not represent a valid
alias definition, or an error occurred.
The following environment variables affect the execution of unalias:
Provides a default value for the internationalization variables that
are unset or null. If LANG is unset or null, the corresponding value
from the default locale is used. If any of the internationalization
variables contain an invalid setting, the utility behaves as if none of
the variables had been defined.
If set to a non-empty string value, overrides the values of all the
other internationalization variables.
Determines the locale for the interpretation of sequences of bytes of
text data as characters (for example, single-byte as opposed to multi-
byte characters in arguments).
Determines the locale used to affect the format and contents of diag-
nostic messages written to standard error.
Determines the location of message catalogues for the processing of
Commands: alias(1), csh(1)