ldd

What is ldd command?
ldd (List Dynamic Dependencies) is a *nix utility that prints the shared libraries required by each program or
 shared library specified on the command line. It was developed by Roland McGrath and Ulrich Drepper.
 e.g.  $  ldd  someExecutable
....
possible output:
linux-vdso64.so.1 =>  (0x00003fff7c420000)
 libz.so.1 => /lib64/libz.so.1 (0x00003fff7c3b0000)