How do I determine if a web page exists with shell scripting?

Question

I am trying to make a program that can convert a series of manga scans into one pdf file, and I don\'t want to have to attempt to download the picture to determine if I have

Answer 1

Use cURL to obtain the status code and check for required values.

status=$(curl -s --head -w %{http_code} http://www.google.com/ -o /dev/null)
echo $status