<s>
dbx	B-Application
is	O
a	O
source-level	B-Application
debugger	I-Application
found	O
primarily	O
on	O
Solaris	B-Application
,	O
AIX	B-Application
,	O
IRIX	B-Operating_System
,	O
Tru64	B-Operating_System
UNIX	I-Operating_System
,	O
Linux	B-Application
and	O
BSD	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
It	O
provides	O
symbolic	O
debugging	O
for	O
programs	O
written	O
in	O
C	B-Language
,	O
C++	B-Language
,	O
Fortran	B-Application
,	O
Pascal	B-Application
and	O
Java	B-Language
.	O
</s>
<s>
Useful	O
features	O
include	O
stepping	O
through	O
programs	O
one	O
source	O
line	O
or	O
machine	B-Language
instruction	I-Language
at	O
a	O
time	O
.	O
</s>
<s>
dbx	B-Application
was	O
originally	O
developed	O
at	O
University	O
of	O
California	O
,	O
Berkeley	O
,	O
by	O
Mark	O
Linton	O
during	O
the	O
years	O
1981	O
–	O
1984	O
and	O
subsequently	O
made	O
its	O
way	O
to	O
various	O
vendors	O
who	O
had	O
licensed	O
BSD	B-Operating_System
.	O
</s>
<s>
Besides	O
being	O
provided	O
to	O
various	O
vendors	O
through	O
BSD	B-Operating_System
,	O
dbx	B-Application
has	O
also	O
found	O
its	O
way	O
into	O
other	O
products	O
:	O
</s>
<s>
dbx	B-Application
is	O
also	O
available	O
on	O
IBM	B-Application
z/OS	I-Application
systems	O
,	O
in	O
the	O
UNIX	B-Operating_System
System	I-Operating_System
Services	I-Operating_System
component	O
.	O
</s>
<s>
dbx	B-Application
for	O
z/OS	B-Application
can	O
debug	O
programs	O
written	O
in	O
C	B-Language
and	O
C++	B-Language
,	O
and	O
can	O
also	O
perform	O
machine	O
level	O
debugging	O
.	O
</s>
<s>
As	O
of	O
z/OS	B-Application
V1R5	O
,	O
dbx	B-Application
is	O
able	O
to	O
debug	O
programs	O
using	O
the	O
DWARF	O
debug	O
format	O
.	O
</s>
<s>
z/OS	B-Application
V1R6	O
added	O
support	O
for	O
debugging	O
64-bit	B-Device
programs	O
.	O
</s>
<s>
dbx	B-Application
is	O
included	O
as	O
part	O
of	O
the	O
Oracle	B-Application
Solaris	I-Application
Studio	I-Application
product	O
from	O
Oracle	B-Application
Corporation	I-Application
,	O
and	O
is	O
supported	O
on	O
both	O
Solaris	B-Application
and	O
Linux	B-Application
.	O
</s>
<s>
It	O
supports	O
programs	O
compiled	O
with	O
the	O
Oracle	B-Application
Solaris	I-Application
Studio	I-Application
compilers	O
and	O
GCC	B-Application
.	O
</s>
