How to check what shared libraries are loaded at run time for a given process?

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Other people are on the right track. Here are a couple ways.

cat /proc/NNNN/maps | awk '{print $6}' | grep '\.so' | sort | uniq

Or, with strace:

strace CMD.... 2>&1 | grep -E '^open(at)?\(.*\.so'

Both of these assume that shared libraries have “.so” somewhere in their paths, but you can modify that. The first one gives fairly pretty output as just a list of libraries, one per line. The second one will keep on listing libraries as they are opened, so that’s nice.

And of course lsof…

lsof -p NNNN | awk '{print $9}' | grep '\.so'

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