How can we access environmenttal variables in Perl?

Perl provides access to environment variables via the global %ENV hash. However, if using the Env module, it will create global scalars for all the environment variables.

use Env;
print "$USER uses $SHELL";

If required to get only a few selected variables then it can be done like:

 

use Env qw[@PATH $USER];
print "$USER's  path is @PATH";