Shell Programming and Scripting

Hi there,

I have a website adslgeek.com/troubleshooter which I am trying to get some quite detection of network variables, and I have been thinking of using PHP to pass System commands to a shell script, and pass the results back, then use PHP with RegEX to then process the output, and display advice based on the findings (eg if packet loss is bad, then PHP displays a warning)

I have a PHP page passing down to Linux system commands and getting the result parsing back to a PHP variable / rendered page and that is easy (eg I can send ping, traceroute etc)

Key items I have been thinking about / not too sure about what system commands to use are

- Max MTU detection / MSS
- RWIN - (TCP Receive Window) of the remote host (eg the visitor)
- Packetloss (I was thinking just doing say 50 pings from server to customer and catching the result)
- Ack size and count as well as delayed Acks
- Open ports of remote host?
- I have some NMAP commands which might be able to detect remote end OS / Device which should be helpful.

So what my question is: what would be the best system commands for me to detect these types of network variables?

Also does anyone have any other ideas of what would be good to help diagnose network TCP / IP link?


Any help would be really appreciated.

Cheers,
Jay / ADSLgeek

System administration commands are OS dependant... of your architecture or OS you say nothing...

For sure - at the moment I was looking at setting up shop on a VPS running Ubuntu / Fedora Linux, but to be honest, I am keen to hear different options

(eg if people suggested that I could get more power from running something like Blackbuntu, I am open to whatever gets the job done.)