<s>
The	O
mkdir	B-Application
(	O
make	B-Application
directory	I-Application
)	O
command	B-Application
in	O
the	O
Unix	B-Application
,	O
DOS	B-Device
,	O
DR	B-Operating_System
FlexOS	I-Operating_System
,	O
IBM	B-Application
OS/2	I-Application
,	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
ReactOS	B-Application
operating	B-General_Concept
systems	I-General_Concept
is	O
used	O
to	O
make	O
a	O
new	O
directory	B-Application
.	O
</s>
<s>
It	O
is	O
also	O
available	O
in	O
the	O
EFI	B-Architecture
shell	I-Architecture
and	O
in	O
the	O
PHP	B-Application
scripting	B-Language
language	I-Language
.	O
</s>
<s>
In	O
DOS	B-Device
,	O
OS/2	B-Application
,	O
Windows	B-Application
and	O
ReactOS	B-Application
,	O
the	O
command	B-Application
is	O
often	O
abbreviated	O
to	O
md	B-Application
.	O
</s>
<s>
The	O
command	B-Application
is	O
analogous	O
to	O
the	O
Stratus	B-General_Concept
OpenVOS	I-General_Concept
create_dir	O
command	B-Application
.	O
</s>
<s>
MetaComCo	B-Device
TRIPOS	B-Operating_System
and	O
AmigaDOS	B-Operating_System
provide	O
a	O
similar	O
MakeDir	B-Application
command	B-Application
to	O
create	O
new	O
directories	B-Application
.	O
</s>
<s>
In	O
early	O
versions	O
of	O
Unix	B-Application
(	O
4.1BSD	B-Operating_System
and	O
early	O
versions	O
of	O
System	B-Operating_System
V	I-Operating_System
)	O
,	O
this	O
command	B-Application
had	O
to	O
be	O
setuid	O
root	B-Application
as	O
the	O
kernel	B-Operating_System
did	O
not	O
have	O
an	O
mkdir	B-Application
syscall	B-Operating_System
.	O
</s>
<s>
Instead	O
,	O
it	O
made	O
the	O
directory	B-Application
with	O
mknod	O
and	O
linked	O
in	O
the	O
.	O
</s>
<s>
and	O
..	B-Application
directory	B-Application
entries	O
manually	O
.	O
</s>
<s>
The	O
command	B-Application
is	O
available	O
in	O
MS-DOS	B-Application
versions	O
2	O
and	O
later	O
.	O
</s>
<s>
Digital	O
Research	O
DR	O
DOS	B-Device
6.0	O
and	O
Datalight	O
ROM-DOS	B-Operating_System
also	O
include	O
an	O
implementation	O
of	O
the	O
and	O
commands	O
.	O
</s>
<s>
The	O
version	O
of	O
mkdir	B-Application
bundled	O
in	O
GNU	B-Application
coreutils	I-Application
was	O
written	O
by	O
David	O
MacKenzie	O
.	O
</s>
<s>
It	O
is	O
also	O
available	O
in	O
the	O
open	B-License
source	I-License
MS-DOS	B-Application
emulator	B-Application
DOSBox	B-Application
and	O
in	O
KolibriOS	B-Operating_System
.	O
</s>
<s>
where	O
name_of_directory	O
is	O
the	O
name	O
of	O
the	O
directory	B-Application
one	O
wants	O
to	O
create	O
.	O
</s>
<s>
normal	O
usage	O
)	O
,	O
the	O
new	O
directory	B-Application
would	O
be	O
created	O
within	O
the	O
current	O
directory	B-Application
.	O
</s>
<s>
On	O
Unix	B-Application
and	O
Windows	B-Application
(	O
with	O
Command	B-Application
extensions	O
enabled	O
,	O
the	O
default	O
)	O
,	O
multiple	O
directories	B-Application
can	O
be	O
specified	O
,	O
and	O
mkdir	B-Application
will	O
try	O
to	O
create	O
all	O
of	O
them	O
.	O
</s>
<s>
On	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
,	O
mkdir	B-Application
takes	O
options	O
.	O
</s>
<s>
-p	O
(	O
--parents	O
)	O
:	O
parents	O
or	O
path	O
,	O
will	O
also	O
create	O
all	O
directories	B-Application
leading	O
up	O
to	O
the	O
given	O
directory	B-Application
that	O
do	O
not	O
exist	O
already	O
.	O
</s>
<s>
For	O
example	O
,	O
mkdir	B-Application
-p	O
a/b	O
will	O
create	O
directory	B-Application
a	O
if	O
it	O
does	O
n't	O
exist	O
,	O
then	O
will	O
create	O
directory	B-Application
b	O
inside	O
directory	B-Application
a	O
.	O
</s>
<s>
If	O
the	O
given	O
directory	B-Application
already	O
exists	O
,	O
ignore	O
the	O
error	O
.	O
</s>
<s>
-m	O
(	O
--mode	O
)	O
:	O
mode	O
,	O
specify	O
the	O
octal	O
permissions	O
of	O
directories	B-Application
created	O
by	O
mkdir	B-Application
.	O
</s>
<s>
-p	O
is	O
most	O
often	O
used	O
when	O
using	O
mkdir	B-Application
to	O
build	O
up	O
complex	O
directory	B-Application
hierarchies	O
,	O
in	O
case	O
a	O
necessary	O
directory	B-Application
is	O
missing	O
or	O
already	O
there	O
.	O
</s>
<s>
-m	O
is	O
commonly	O
used	O
to	O
lock	O
down	O
temporary	O
directories	B-Application
used	O
by	O
shell	B-Language
scripts	I-Language
.	O
</s>
<s>
If	O
/tmp/a	O
exists	O
but	O
/tmp/a/b	O
does	O
not	O
,	O
mkdir	B-Application
will	O
create	O
/tmp/a/b	O
before	O
creating	O
/tmp/a/b/c	O
.	O
</s>
<s>
And	O
an	O
even	O
more	O
powerful	O
command	B-Application
,	O
creating	O
a	O
full	O
tree	O
at	O
once	O
(	O
this	O
however	O
is	O
a	O
Shell	B-Operating_System
extension	O
,	O
nothing	O
mkdir	B-Application
does	O
itself	O
)	O
:	O
</s>
<s>
If	O
one	O
is	O
using	O
variables	O
with	O
mkdir	B-Application
in	O
a	O
bash	O
script	O
,	O
POSIX	O
`special	O
 '	O
built-in	O
command	B-Application
'	O
eval	O
 '	O
would	O
serve	O
its	O
purpose	O
.	O
</s>
