How do I write a Perl script to use curl to process a URL?

You can either use curl via backticks

my $curl=`curl http://whatever`

or you can use WWW::Curl.

If shying away from executing command line tools from with Perl, the library equivalent is

use WWW::Curl::Simple;
my $curl = WWW::Curl::Simple->new();
my $res = $curl->get("https://stackoverflow.com");

The content you then access as in

print $res->content;

You may want to read up on https://metacpan.org/pod/WWW::Curl::Simple and the get method returns a https://metacpan.org/pod/HTTP::Response.

To call any shell command from Perl, you can use system:

system "curl http://domain.com/page.html";

Just enclose the shell command in quotes.

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