ldd man page on NetBSD

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LDD(1)			  BSD General Commands Manual			LDD(1)

NAME
     ldd — list dynamic object dependencies

SYNOPSIS
     ldd [-o] [-f format] program ...

DESCRIPTION
     ldd displays all shared objects that are needed to run the given program.
     Contrary to nm(1), the list includes “indirect” dependencies that are the
     result of needed shared objects which themselves depend on yet other
     shared objects.  Zero, one or two -f options may be given.	 The argument
     is a format string passed to rtld(1) and allows customization of ldd's
     output.  The first format argument is used for library objects and
     defaults to "\t-l%o.%m => %p\n".  The second format argument is used for
     non-library objects and defaults to "\t%o => %p\n".

     These arguments are interpreted as format strings a la printf(3) to cus‐
     tomize the trace output and allow ldd to be operated as a filter more
     conveniently.  The following conversions can be used:

     %a	   The main program's name (also known as “__progname”).

     %A	   The value of the environment variable
	   LD_TRACE_LOADED_OBJECTS_PROGNAME in a.out and the program name from
	   the argument vector from elf.

     %o	   The library name.

     %m	   The library's major version number.

     %n	   The library's minor version number (a.out only, ignored in elf).

     %p	   The full pathname as determined by rtld's library search rules.

     %x	   The library's load address

     Additionally, \n and \t are recognized and have their usual meaning.

     The -o option is an alias for -f %a:-l%o.%m => %p\n, which makes ldd
     behave analogously to nm -o.

SEE ALSO
     ld(1), ld.elf_so(1), nm(1), rtld(1)

HISTORY
     A ldd utility first appeared in SunOS 4.0, it appeared in its current
     form in NetBSD 0.9A.

BUGS
     The a.out ldd actually runs the program it has been requested to analyze
     which in specially constructed environments can have security implica‐
     tions.

BSD			       September 7, 2009			   BSD
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