Heh perlcritic knows about this
$ perlcritic -brutal program.pl
Code is not tidy at line 1, column 1. See page 33 of PBP. (Severity: 1)
Missing strict or warnings at line 1, column 1. The strict and warnings pragmas are important to avoid common pitfalls
and deprecated/experimental functionality. Make sure each script or module contains "use strict; use warnings;" or a mod
ule that does this for you. (Severity: 4)
Module does not end with "1;" at line 1, column 1. Must end with a recognizable true value. (Severity: 4)
Code not contained in explicit package at line 1, column 1. Violates encapsulation. (Severity: 4)
No package-scoped "$VERSION" variable found at line 1, column 1. See page 404 of PBP. (Severity: 2)
Code before strictures are enabled at line 1, column 1. See page 429 of PBP. (Severity: 5)
Code before warnings are enabled at line 1, column 1. See page 431 of PBP. (Severity: 4)
Conditional "use" statement at line 3, column 9. Use "require" to conditionally include a module. (Severity: 3)
See perlrun for ways to environmentally load a module
perl -MXYZ ./myprogram.pl
export PERL5OPT=-MXYZ
set PERL5OPT=-MXYZ
./myprogram.pl