How do I find which library in /usr/lib holds a certain function?

What if you’re compiling and you’ve missed a library that needed linking in? All gcc reports are function names… Here’s a simple command that’ll find what you’re looking for:

for i in *; do echo $i:;nm $i|grep tgetnum 2>/dev/null;done

Where tgetnum is the name of the function you’re looking for.

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