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<concept xml:lang="en" id="GUID-78865979-D519-5476-91FE-9EF3386AC8F5"><title>unset</title><prolog><metadata><keywords/></metadata></prolog><conbody><p><userinput>unset [ -fmv ] name ...</userinput> </p> <p>Each named parameter is <codeph>unset</codeph>. Local parameters remain local even if unset; they appear unset within scope, but the previous value will still reappear when the scope ends. Individual elements of associative array parameters may be unset by using subscript syntax on <codeph>name</codeph>, which should be quoted (or the entire command prefixed with <codeph>noglob</codeph>) to protect the subscript from filename generation. </p> <table id="GUID-241FBFFB-B0F0-51B1-B84A-2AAAB7ABB0D1"><tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/><thead><row><entry>Option</entry> <entry>Description</entry> </row> </thead> <tbody><row><entry><p> <codeph>-f</codeph>  </p> </entry> <entry><p>Equivalent to <xref href="GUID-7A1B0CAC-BA12-512A-98B0-86CD317E4B24.dita">unfunction</xref>. </p> </entry> </row> <row><entry><p> <codeph>-m</codeph>  </p> </entry> <entry><p>The arguments are taken as patterns (should be quoted) and all parameters with matching names are unset. Note that this cannot be used when unsetting associative array elements, as the subscript will be treated as part of the pattern. </p> </entry> </row> <row><entry><p> <codeph>-v</codeph>  </p> </entry> <entry><p>Specifies that name refers to parameters. This is the default behaviour. </p> </entry> </row> </tbody> </tgroup> </table> </conbody></concept>