Very bad idea, IMO. While using 'strict' and 'warnings' is often a good idea, slavishly turning them on no matter what is a bad idea. Perl too often gets warnings wrong, and with strictness turned on, you can't do a lot of useful things.

Only turn on things you know how and when to turn off.

Having said that, if you really want to play 'nasty programming lead', set "PERL5OPT='-Mstrict -Mwarnings'" in whatever config file(s) in /etc that's appropriate for your OS.

Abigail