-bash$ rm English.pm 
-bash$ perl -Mstrict -I. -wle 'use English; $ERRNO=1; print $ERRNO; '
Operation not permitted
-bash$ echo 1 > English.pm
-bash$ perl -Mstrict -I. -wle 'use English; $ERRNO=1; print $ERRNO; '
Global symbol "$ERRNO" requires explicit package name at -e line 1.
Global symbol "$ERRNO" requires explicit package name at -e line 1.
Execution of -e aborted due to compilation errors.