Some of the information i am requesting can be gleaned from /var/log/syslog , e.g:

grep wlan /var/log/syslog

But the usefulness of that information also depends on how you are network connecting; dhcp or static network connections, etc.

Is there a command line give us the uptime of network card exactly ?

  • 5
    Do you mean, when was the network card discovered on the PCI/USB Bus, or when the ethernet link came up, or when it first associated with a wifi access point, or when it successfully authenticated to a wifi network, or when it first obtained an IP address? Or when it received or sent its first frame? Feb 9 '15 at 12:11
  • Mr. @StéphaneChazelas: alright.exactly! Feb 9 '15 at 13:01
  • 1
    Exactly what? Which one is it? Feb 9 '15 at 13:24
  • I doubt that the network was down between two servers in a period of time (of course when the network goes down, the NIC goes down too). So I want to know when was the last time it came up to make sure if the network went down in the that period of time or not Feb 9 '15 at 13:53

Use rtmon to record network interface changes and then parse its output as needed.

  • 2
    An example would be nice.
    – Tadej
    Sep 7 '17 at 6:27

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