How to detect RELOAD in cgi? and how to get the date in cgi?

Except these two questions, I also want to know if there is a way to figure out who *are* currently on my page. (say
currently several people are visiting my page, I want to
figure out who they are).

About RELOAD, I want to detect if someone click on the
"RELOAD" button in cgi, as to date, if you can help, please
give details in how to get the date in my cgi, say
(currentTime = date(...) or something else)
carrotAsked:
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icdCommented:
Two of these questions are related. How to detect a reload and how to find out who has loaded your page.

You can access an environment variable 'REMOTE_ADDR', in perl this would be $ENV{'REMOTE_ADDR'}

This will tell you the address of the person loading the page. By logging every page accessed and by whom you can detect reloads (i.e. a particular page has been loaded by someone who loaded it earlier on in the day).

The REMOTE_ADDR however is not very useful since you cannot always relate it to a particular person. If however you insist that anyone using your site provides a user name and password (by using the .htaccess method on UNIX for example) then you have access to environment variable REMOTE_USER which is more useful.

To get the date you can use the (UNIX) date command.


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carrotAuthor Commented:
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