<s>
The	O
advanced	B-Application
debugger	I-Application
adb	O
is	O
the	O
standard	O
UNIX	B-Application
debugger	B-Application
found	O
on	O
Solaris	B-Application
1	O
and	O
2	O
,	O
HP-UX	B-Application
,	O
SCO	B-Operating_System
and	O
Venix	B-Operating_System
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
of	O
a	O
debugger	B-Application
called	O
db	O
.	O
</s>
<s>
ADB	O
is	O
the	O
standard	O
debugger	B-Application
on	O
Solaris	B-Application
and	O
the	O
Solaris	B-Application
kernel	I-Application
debugger	B-Application
kadb	O
that	O
was	O
introduced	O
with	O
SunOS-3.5	O
(	O
1986	O
)	O
is	O
a	O
minor	O
variant	O
of	O
adb	O
.	O
</s>
<s>
A	O
version	O
of	O
ADB	O
was	O
integrated	O
into	O
the	O
BSD	B-Operating_System
kernel	O
as	O
a	O
kernel	O
debugger	B-Application
.	O
</s>
<s>
On	O
Solaris	B-Application
,	O
ADB	O
was	O
replaced	O
by	O
the	O
Modular	B-Application
Debugger	I-Application
mdb	I-Application
with	O
Solaris	B-Application
8	I-Application
(	O
2000	O
)	O
and	O
the	O
ADB	O
command-line	B-Application
interface	I-Application
now	O
is	O
emulated	O
by	O
mdb	O
when	O
it	O
is	O
called	O
as	O
adb	O
.	O
</s>
