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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How do I see what pid/process has modified a linux routing table? (lemmy.world)

submitted 11 months ago by [email protected] to c/[email protected]

10 comments fedilink hide all child comments

Anyone know how to see what pid/process has modified a linux routing table (specifically on Ubuntu )? I have an interesting problem where a route that I have created has been deleted over time, but can't figure out what. I've tried rtmon but seems to only show timestamps of the adds/deletes

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[–] mikey 6 points 11 months ago (1 children)

They aren't asking about changes to a file describing the routing config, rather the actual in-use routing config. Unless the routing rules are modified through a couple of files (which I doubt), this doesn't answer the question.

Cool commands though.

[–] [email protected] 1 points 11 months ago (1 children)

My bad, I thought in Linux everything is a file

[–] mikey 6 points 11 months ago* (last edited 11 months ago) (2 children)

Well, the routes might manifest somewhere as files, but I don't expect anyone to be able to viably parse them without commands like ip or ifconfig (or know where the files even are).

Some devices (like disks for example) are very straightforward to use as files, while some other special files (like USB devices) are so weird/ugly to use that everyone uses tools/libraries to access them (like libusb).

This is very off-topic, but there's a great talk by Benno Rice that talks about this (among many others): https://youtu.be/9-IWMbJXoLM

[–] [email protected] 3 points 11 months ago

Thank you for the info and I'll listen to that talk

[–] [email protected] 2 points 11 months ago (1 children)

Here is an alternative Piped link(s):

https://piped.video/9-IWMbJXoLM

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source; check me out at GitHub.

[–] [email protected] -3 points 11 months ago

Bad bot