How Can I Tell I'm Connected to the Network?
 

Simple question: Is there a way to tell from the command shell if I a connected to a network or not?

It's probably something in /proc...but I'm not finding it. I'm hoping this works for both wireless and mobile phone connections.

Thanks.

Edit: BTW, I DID search through the forums, but did not find anything. I'll not be surprised if someone has asked this already.

Re: How Can I Tell I'm Connected to the Network?
 

/sbin/ifconfig wlan0

will give you an IP address, if you are connected. also, the RX/TX counters will not be 0. you should not need root access for this.

Re: How Can I Tell I'm Connected to the Network?
 

Don't know what exact result you're after; if you want to use it in a shell conditional, grep it for UP, like this for wlan0:
I don't know what interface BT connections show up as; but something like (if it were bt0):

Re: How Can I Tell I'm Connected to the Network?
 

This doesn't help you if you're not using wlan :)

Frethop, check out libconic. There's a DBUS call you can make that will report back what you're connected to (if anything). I'll try to get you a command line in a bit...

Re: How Can I Tell I'm Connected to the Network?
 

Thanks everyone!

Actually, I'm going to use it in a Python program --> do one thing if connected, store results for use later if not.

Re: How Can I Tell I'm Connected to the Network?
 

netstat -rn | grep '0\.0\.0\.0'

should work too. Basically, it checks the kernel's routing tables to see if there's a default gateway set. Without a default gateway, you can't connect to any systems outside your local ethernet segment, hence no connection. This is indifferent to the kind of connection you use - BT, WLAN or whatever.

Martin