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41. Fundamentals of Shared Libraries > Useful Tools for Working with Shared Lib...

Useful Tools for Working with Shared Libraries

In this section, we briefly describe a few tools that are useful for analyzing shared libraries, executable files, and compiled object (.o) files.

The ldd command

The ldd(1) (list dynamic dependencies) command displays the shared libraries that a program (or a shared library) requires to run. Here’s an example:

$ ldd prog
         libdemo.so.1 => /usr/lib/libdemo.so.1 (0x40019000)
         libc.so.6 => /lib/tls/libc.so.6 (0x4017b000)
         /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

The ldd command resolves each library reference (employing the same search conventions as the dynamic linker) and displays the results in the following form:


  

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