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RedHat 9 (Linux i386) - man page for ldd (redhat section 1)

LDD(1)							      General Commands Manual							    LDD(1)

ldd - print shared library dependencies
ldd [OPTION]... FILE...
ldd prints the shared libraries required by each program or shared library specified on the command line.
--version Print the version number of ldd. -v --verbose Print all information, including e.g. symbol versioning information. -d --data-relocs Perform relocations and report any missing objects (ELF only). -r --function-relocs Perform relocations for both data objects and functions, and report any missing objects or functions (ELF only). --help Usage information.
ldd does not work on a.out shared libraries. ldd does not work with some extremely old a.out programs which were built before ldd support was added to the compiler releases. If you use ldd on one of these programs, the program will attempt to run with argc = 0 and the results will be unpredictable.
Roland McGrath and Ulrich Drepper.
ldconfig(8), 30 October 2000 LDD(1)