How can I convert Perl one-liners into complete scripts?

Question

I find a lot of Perl one-liners online. Sometimes I want to convert these one-liners into a script, because otherwise I\'ll forget the syntax of the one-liner.

For e

Answer 1

#!/usr/bin/env perl

while(<>) {
    s/(\d+)/localtime($1)/e;
    print;
}

The while loop and the print is what -p does automatically for you.