$ENV{'PATH'} = '/var/www/';

All relevant executables are in /var/www? I HIGHLY doubt that. A safe value for $ENV{'PATH'} is generally /bin:/usr/bin (which is also the default path set by the operating system, i.e. kernel and/or init). If you want to avoid any executable to be run without an giving its absolute path, set $ENV{'PATH'} to a non-existing or empty directory.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^3: Proper and acceptable use of backticks in a modern Perl script by afoken
in thread Proper and acceptable use of backticks in a modern Perl script by Polyglot

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