JavaScript is special, and it plays a critical role in almost every large application. What is it about JavaScript that makes it meaningfully different from other languages?
Here are some questions that will help you explore the stuff that really matters:

Changing en passant

/usr/man/man3/foo.1 changes to /usr/man/cat3/foo.1

($catpage  = $manpage)  =~ s/man(?=\d)/cat/;

Use foreach() Loops
@bindirs = qw( /usr/bin /bin /usr/local/bin );
for (@libdirs = @bindirs) { s/bin/lib/ }

Use Hashes of Records, not Parallel Arrays
for $his ($people{"Jason"}) {
$his->{AGE} = 23;
$his->{DAD} = "Herbert";
}