MKDIR(1) OpenBSD Reference Manual MKDIR(1)
mkdir - make directories
mkdir [-p] [-m mode] directory ...
The mkdir utility creates the directories named as operands, in the order
specified, using mode rwxrwxrwx (0777) as modified by the current
The options are as follows:
Set the file permission bits of the newly created directory to
mode. The mode argument can be in any of the formats specified
to the chmod(1) utility. If a symbolic mode is specified, the
operators `+' and `-' are interpreted relative to an initial mode
-p Create intermediate directories as required. If this option is
not specified, the full path prefix of each operand must already
exist. Intermediate directories are created with permission bits
of rwxrwxrwx (0777) as modified by the current umask, plus write
and search permission for the owner. Do not consider it an error
if the argument directory already exists.
The user must have write permission in the parent directory. For an
explanation of the directory hierarchy, see hier(7).
The mkdir utility exits 0 on success, and >0 if an error occurs.
Create a directory named foobar:
$ mkdir foobar
Create a directory named foobar and set its file mode to 700:
$ mkdir -m 700 foobar
Create a directory named cow/horse/monkey, creating any non-existent
intermediate directories as necessary:
$ mkdir -p cow/horse/monkey
chmod(1), rmdir(1), mkdir(2), umask(2), hier(7)
The mkdir utility is compliant with the IEEE Std 1003.1-2008
A mkdir command appeared in Version 1 AT&T UNIX.
OpenBSD 5.1 September 3, 2010 OpenBSD 5.1
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