BASH: how to perform arithmetic on numbers in a pipe

Question

I am getting a stream of numbers in a pipe, and would like to perform some operations before passing them on to the next section, but I\'m a little lost about how I would go

Answer 1

Yoi might like something like this:

echo "1 2 3 4 5" | perl -ne 'print $_ ** 2, " " for split / /, $_'

or even like this:

echo "1 2 3 4 5" | perl -ne 'print join " ", map {$_ ** 2} split / /, $_'