The script from above can be even more simplified:

print "hello world"

  1. The brackets around "hello world" are not required.
  2. The semicolon after the last statement is not required.

Also you can do away with the whole #!/usr/bin/perl deal. Your script ends up looking like this:

print "hello world"

Of course you'll have to run your script like this: perl scriptfile

See how easy it is to read Perl!