http://qs1969.pair.com?node_id=131746

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

In perlsec it say to delete some of the %ENV keys.
delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
What are these and why are they dangerous? I guess they have to do with the shell, so I think they don't matter if I do not use the shell, right?