| LDD(1) | General Commands Manual | LDD(1) |
ldd —
ldd |
[-ov] [-f
format] program ... |
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 customize the
trace output and allow ldd to be operated as a
filter more conveniently. The following conversions can be used:
LD_TRACE_LOADED_OBJECTS_PROGNAME in a.out and the
program name from the argument vector from elf.rtld's library
search rules.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.
The -v option turns on verbose mode.
ldd utility exits 0 on success,
and >0 if an error occurs.
ldd utility first appeared in SunOS 4.0, it appeared
in its current form in NetBSD 0.9A.
| October 15, 2022 | NetBSD 10.0 |