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Is there a way to find timestamps of when I connected/disconnected to wireless networks (so I can see where I was at some point in the past)? I can't seem to find any log files with this information (and my system doesn't seem to save logs older than about a month, anyway).

If no such log file exists, it possible to write a script that will do this for me?


P.S. I'm running Ubuntu 10.04.

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Yes, it is possible. Do you have some scripting experience? – user unknown May 20 '12 at 0:09
up vote 1 down vote accepted

You can find some last connections in

sudo less /etc/NetworkManager/system-connections/* 

But the timestamp is of the form


To make it readable, you would use:

date -d "1970-01-01 +1293853087 seconds" 
Sa 1. Jan 03:38:07 CET 2011

For future use, it might be better to insert a few code lines to /etc/networks/ifup.d/YourScript

echo $(date) "  "$(if [ "$IFACE" = eth1 ]; then
    iwconfig | egrep -o "ESSID:*"
fi) >> /var/log/myip.log

or something similar.

I haven't done so, so there are surely some problems to solve. Maybe you don't have write access to /var/log/myip.log, and have to create it with sudo touch ... before, and allow some group (network?) to write to it.

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Hmm, unfortunately my /etc/NetworkManager/system-connections/ directory is empty? (Maybe I have some setting turned off?) – jiangty May 20 '12 at 0:51
@jiangty: Do you use the NetworkManager? – user unknown May 20 '12 at 1:16
Sorry for the late response; it at least appears that I use NetworkManager (it's the default way Ubuntu handles internet connection, correct?) – jiangty May 22 '12 at 2:33
Yes, at least at 10.04, which I'm still using. – user unknown May 22 '12 at 11:37

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