First script

#!/usr/bin/env perl
use v5.10;
use strict;
use warnings;

say 'Hello World';

• #!/usr/bin/env perl - Path to perl interpreter

• use v5.10; - Minimal version number of Perl, turn on new features. Same as use 5.010;

• use strict; - Require variable declarations, avoid stupid mistakes.

• use warnigs; - Ask for warnings. Avoid further stupid mistakes.

• say - print with newline at the end