$ perl555 -e 'use 5.006' 
syntax error at -e line 1, at EOF
Execution of -e aborted due to compilation errors.

$ perl555 -e 'use 5.006;'
Perl 5.006 required--this is only version 5.00505, stopped at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

##</code><code>##

$ perl555 -e 'use 5.6.0;'
syntax error at -e line 1, near "use 5.6"
Execution of -e aborted due to compilation errors.

##</code><code>##

$ perl562 -e 'use v5.8.0'
Perl v5.8.0 required--this is only v5.6.2, stopped at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

$ perl562 -e 'use 5.8.0'
Perl v5.8.0 required--this is only v5.6.2, stopped at -e line 1.
BEGIN failed--compilation aborted at -e line 1.