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Lsofgraph – Convert lsof output to graph of processes, pipes, fifos and sockets

180 points| zevv | 8 years ago |github.com

17 comments

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[+] bpchaps|8 years ago|reply
Hah, I wrote something very, very similar to this recently. The problem I eventually had with it was that lsof wasn't always installed on the hosts I was working with. So, it turned into a script to parse through /proc and other nonsense.

https://github.com/red-bin/lsofer/blob/master/lsofer.sh

(wish I could paste the graphing code, but it's code I wrote at my company.)

[+] aidos|8 years ago|reply
Cool! More interesting, I didn’t know the dot utility for creating the visual representations of the graphs. I can think of a bunch of uses for that.
[+] loeg|8 years ago|reply
dot (part of graphviz) is super handy.
[+] TimWolla|8 years ago|reply
systemd-analyze(1) supports dot(1) output to plot dependencies between units:

Quoting from the man page:

    EXAMPLES FOR DOT
       Example 1. Plots all dependencies of any unit whose name starts with "avahi-daemon"

           $ systemd-analyze dot 'avahi-daemon.*' | dot -Tsvg > avahi.svg
                 $ eog avahi.svg

       Example 2. Plots the dependencies between all known target units

           systemd-analyze dot --to-pattern='*.target' --from-pattern='*.target' | dot -Tsvg > targets.svg
           $ eog targets.svg
[+] fsniper|8 years ago|reply
I wish I had this when I started my career. I would have well slept more.
[+] MayeulC|8 years ago|reply
I might be missing something here, but shouldn't the graph be directed (processes opening fifos in read-only mode, or even unidirectional pipes like on Linux)? Or is it something impossible to query with lsof?

It otherwise is a very neat graphical overview of the state of a system!

[+] zevv|8 years ago|reply
afaik that info is not available from lsof, but I'm open to suggestions if there is more sensible data to extract from the output.
[+] sgroppino|8 years ago|reply
Now we just need to combine this with lstopo.
[+] jakeogh|8 years ago|reply
Cool! What's it's license?
[+] zevv|8 years ago|reply
Just added the LICENSE file, 2 clause BSD