![]() ![]() On Debian based (like Ubuntu), you could store your scripts into /etc/network/if-down. In fine, there must already be something about this.ĭepending on Linux Installation, you could add if-up and if-down scripts to be able to react to this kind of events. Nota: This require patch to be installed. ![]() sys/class/net/eth0/* 2>/dev/null |Ĭould render something like (once you've unplugged and plugged back, depending ): +++ - 14:18:29.577094838 +0100 sys/class/net/eth0/* 2>/dev/null >ethstate This is a pooling method, not a real event tracking. Reading or writting under /syscould break your system, especially if run as root! You've been warned -) If you need something more powerful, take a look at my NCD programming language, a programming language designed for network configurations.įor example, a simple NCD script that will print "cable in" and "cable out" to stdout (assuming the interface is already up): process foo d' Anyway, if all you want to do is bring the interface up at boot, you could write a small systemd service file to do this and enable it. The problem with doing network configurations with shell scripts is that shell scripts are terrible for event handling (such as a network cable being plugged in and out). 2 14:51:25 HalosGhost Forum Moderator From: Twin Cities, MN Registered: Posts: 2,084 Website ifconfig has been deprecated, you should use ip. Side note: if you use rtnetlink, you have to work together with udev, or your program may get confused when udev renames a new network interface. On the low level, these events can be caught using rtnetlink sockets, without any polling. I guess I can't put you both down as the correct answer? And its probably fair for you that I do choose one. Kent Fredric and lothar, both of your answers satisfy my need. You can run the following to show all interfaces that are up and what IP addresses they have been. How is the Linux world suppose to have their own version of the Windows bubble that pop up from the icon tray indicating that you've just unplugged the network cable? An older but still useful command is the ifconfig command. Isn't there some state which can be used in the /proc file system (everything else is in there)? Ping a host - since the product will be within a LAN using an unknown network configuration and unknown hosts.Using 'ifconfig' - since a network cable may be connected but the network not properly configured or not currently up.The following solutions which have been proposed on other sites do NOT work for this purpose: Every so often I will get the latest changes from the SF svn repo using “git-svn rebase”.In a Linux environment, I need to detect the physical connected or disconnected state of an RJ45 connector to its socket. When I code and test, I work with the local git repo and push changes to the bitbucket repo. The last thing I do is “git push -u origin master” & “git-svn rebase”. I first clone from SF svn using git-svn, then add bitbucket repo as a remote, then push files from local git repo to bitbucket. Sourceforge (SF) svn -> local git -> git ![]() For example, to disable enp0s3 run: sudo ifconfig enp0s3 down. To deactivate a specific network interface, run the ifconfig command with the down flag and use sudo: sudo ifconfig interfacename down. ![]() Just the normal svn or download install method. An active network interface transmits and receives data. You shouldn’t have any issue updating though. We can use the ifconfig command to get a comprehensive view of the interface configuration. I could use git-svn but I don’t feel comfortable doing commit’s and the like through my git repo. I actually hand mash out the code lines based on your repo, or if there were significant changes (too much for me to accurately type out) I copy the files in place using wget. ![]()
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