test if eth0 is active

[sanderd17]

Is there a way to test if the eth0 connection is active? I would like to use this in a script.

I know it's possible to do with

$ ethtool eth0 | grep Link

But I don't like this command because it has to be executed as super user. And I want my script to be executed as a normal user.

[memilanuk]

'ifconfig eth0' ?

Though you might want configure your script to check that it has an IP address assigned to it as well that it exists.

[hal10000]

To check if it has an ip-address, use:

 ifconfig eth0 | grep -i 'inet address'

[sanderd17]

Thanks, could now make a script to autologin on the internet via a web page (together with greasemonkey)