local %ENV = %ENV;
$ENV{'PATH'} = '/bin:/usr/bin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

##</code><code>##

local $ENV{'PATH'} = '/bin:/usr/bin';
local delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};