Determine Active Nic Address Using Python Console Commands

I am trying to find an active NIC, an active NIC is one where the command wil return UP for me. In my command: # cat /sys/class/net/eth0/operstate I am returned a value of UP In a

Solution 1:

x is a variable containing the value: 1 or 2 or 3 or 4. The code-snippet you've treats x as a string. Also, the code-snippet tries to enclose single quotes within single quotes generating the error.

Modify as below and it should work.

Also, there's a syntax error in the above code - you're missing a colon after the 'if' clause.

mylist= [0,1,2,3]
for x in mylist:
       withopen('/sys/class/net/{}/operstate'.format(x)) as f:
              mac_eth0= f.read().rstrip()
       if mac_eth0 == "up":
                print"it is %s" %(mac_eth0)