<s>
objdump	B-Device
is	O
a	O
command-line	B-Application
program	I-Application
for	O
displaying	O
various	O
information	O
about	O
object	B-Application
files	I-Application
on	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
For	O
instance	O
,	O
it	O
can	O
be	O
used	O
as	O
a	O
disassembler	O
to	O
view	O
an	O
executable	B-Application
in	O
assembly	O
form	O
.	O
</s>
<s>
It	O
is	O
part	O
of	O
the	O
GNU	B-Application
Binutils	I-Application
for	O
fine-grained	O
control	O
over	O
executables	B-Application
and	O
other	O
binary	O
data	O
.	O
</s>
<s>
objdump	B-Device
uses	O
the	O
BFD	B-Application
library	O
to	O
read	O
the	O
contents	O
of	O
object	B-Application
files	I-Application
.	O
</s>
<s>
Similar	O
utilities	O
are	O
Borland	O
TDUMP	O
,	O
Microsoft	O
DUMPBIN	O
and	O
readelf	B-Application
.	O
</s>
<s>
macOS	B-Application
)	O
,	O
the	O
objdump	B-Device
binary	O
may	O
actually	O
be	O
a	O
link	O
to	O
llvm	B-Application
's	I-Application
objdump	B-Device
,	O
with	O
different	O
command-line	B-Application
options	O
and	O
behavior	O
.	O
</s>
<s>
$	O
objdump	B-Device
-D	O
-M	O
intel	O
file.bin	O
|	O
grep	B-Application
main	O
.	O
</s>
<s>
This	O
performs	O
disassembly	O
on	O
the	O
file	O
«	O
file.bin	O
»	O
,	O
with	O
the	O
assembly	B-Language
code	I-Language
shown	O
in	O
Intel	O
syntax	O
.	O
</s>
<s>
We	O
then	O
redirect	O
it	O
to	O
grep	B-Application
,	O
which	O
searches	O
the	O
main	O
function	O
and	O
displays	O
20	O
lines	O
of	O
its	O
code	O
.	O
</s>
