Draw kernel module dependancy graph.

lsmod | perl -e 'print "digraph \"lsmod\" {";<>;while(<>){@_=split/\s+/; print "\"$_[0]\" -> \"$_\"\n" for split/,/,$_[3]}print "}"' | dot -Tpng | display -
parse `lsmod' output and pass to `dot' drawing utility then finally pass it to an image viewer

35
By: bandie91
2011-11-27 14:02:35
dot lsmod perl perl lsmod dot modules
10

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What Others Think

Wonderful.
kaedenn · 745 weeks ago
"Imagemagick is smarter than you think. It can display dot files, so the dot command is unnecessary." - Comment by dratini0 8 hours ago
bandie91 · 744 weeks and 6 days ago
So how would you do this with ImageMagick?
SuperFly · 744 weeks and 6 days ago
SuperFly: lsmod | perl -e 'print "digraph \"lsmod\" {";;while(){@_=split/\s+/; print "\"$_[0]\" -> \"$_\"\n" for split/,/,$_[3]}print "}"' | display - you can also replace 'display - ' with 'gm display - ' if you have GraphicsMagick installed instead of ImageMagick (or just install graphicsmagick-imagemagick-compat to replace GraphicsMagick completely)
psykotron · 744 weeks and 6 days ago
@SuperFly: with IM not the whole procedure, just the `dot | display' thing. `display' can interpret this format too and displays it on transparent (for me). @psykotron: i think reboot unneccessary. Run `fc-cache -r' !
bandie91 · 744 weeks and 5 days ago
I have ImageMagick-6.2.8.0-4.el5_5.3.x86_64 installed and I get this: lsmod | perl -e 'print "digraph \"lsmod\" {";<>;while(<>){@_=split/\s+/; print "\"$_[0]\" -> \"$_\"\n" for split/,/,$_[3]}print "}"' | display - display: no decode delegate for this image format `/tmp/magick-XX6QuBzg'.
SuperFly · 744 weeks and 5 days ago
# `awk` is very good at parsing the output of `lsmod` lsmod | awk 'BEGIN{print "digraph lsmod {"}; NR!=1&&NF==4{printf("\t%s -> { %s };\n", $1, gensub(",", "", "g", $4))}; END{print "}"}' | dot -Tpng | display -
kev · 744 weeks and 5 days ago
# sorry, please change `gensub(",", "", "g", $4)` to `gensub(",", " ", "g", $4)`
kev · 744 weeks and 5 days ago
@unixmonkey21861: it not really works... how modulenames in 4th field filled? printf doesnt accept gensub's array.
bandie91 · 744 weeks and 5 days ago
brilliant..
alperyilmaz · 744 weeks ago

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