Shell Programming and Scripting

Hello everyone,

I need to write a shell script, that redirects all traffic in your browser to a website x.
That means:

1. User sends a request to load website "www-somerandomwebsite-com"
2. the script redirects the request to a local file that is stored on the hard drive
3. User will always be redirected to website x


If someone could give me a hint on how to start with this script, I would be deeply thankful.
Thanks in advance.

This is not something that you would normally try to do using a shell script. It would normally be done via a proxy or web caching server. Is there a reason you need to involve a shell script?

well, the point is I am want to wrap the script with an app wrapper for OSX. That's basically the reason for using a shell script. I haven't yet looked into what else language it can wrap to make an app for me.

oh, isn't there a way to write it in a .conf file, something like:

127.0.0.1 www-random website x .com


btw thank you for your reply.

Browsers talk direct to the O/S to get sockets and connections, so a wrapper script has no way to change that but by browser features it might trigger by configuring the browser. Some firewall products might also be able to redirect specific connections to other ports, like NAT, but that would be for the whole host at least.

I am trying to use ipfw firewall and setting up a rule list now. I forgot to mention that it should run on OSX machines. Does anyone has experience with that?

You might want one of these interfaces: ipfirewall - Wikipedia, the free encyclopedia