MKDIR(1)                   POSIX Programmer's Manual                  MKDIR(1)



PPRROOLLOOGG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NNAAMMEE
       mkdir -- make directories

SSYYNNOOPPSSIISS
       mkdir [[-p]] [[-m _m_o_d_e]] _d_i_r...

DDEESSCCRRIIPPTTIIOONN
       The _m_k_d_i_r utility shall create the directories specified by the
       operands, in the order specified.

       For each _d_i_r operand, the _m_k_d_i_r utility shall perform actions
       equivalent to the _m_k_d_i_r() function defined in the System Interfaces
       volume of POSIX.1-2017, called with the following arguments:

        1. The _d_i_r operand is used as the _p_a_t_h argument.

        2. The value of the bitwise-inclusive OR of S_IRWXU, S_IRWXG, and
           S_IRWXO is used as the _m_o_d_e argument. (If the --mm option is
           specified, the value of the _m_k_d_i_r() _m_o_d_e argument is unspecified,
           but the directory shall at no time have permissions less
           restrictive than the --mm _m_o_d_e option-argument.)

OOPPTTIIOONNSS
       The _m_k_d_i_r utility shall conform to the Base Definitions volume of
       POSIX.1-2017, _S_e_c_t_i_o_n _1_2_._2, _U_t_i_l_i_t_y _S_y_n_t_a_x _G_u_i_d_e_l_i_n_e_s.

       The following options shall be supported:

       --mm _m_o_d_e   Set the file permission bits of the newly-created directory
                 to the specified _m_o_d_e value. The _m_o_d_e option-argument shall
                 be the same as the _m_o_d_e operand defined for the _c_h_m_o_d
                 utility. In the _s_y_m_b_o_l_i_c___m_o_d_e strings, the _o_p characters ''++''
                 and ''--'' shall be interpreted relative to an assumed initial
                 mode of _a=_r_w_x; ''++'' shall add permissions to the default mode,
                 ''--'' shall delete permissions from the default mode.

       --pp        Create any missing intermediate pathname components.

                 For each _d_i_r operand that does not name an existing
                 directory, before performing the actions described in the
                 DESCRIPTION above, the _m_k_d_i_r utility shall create any
                 pathname components of the path prefix of _d_i_r that do not
                 name an existing directory by performing actions equivalent
                 to first calling the _m_k_d_i_r() function with the following
                 arguments:

                  1. A pathname naming the missing pathname component, ending
                     with a trailing <slash> character, as the _p_a_t_h argument

                  2. The value zero as the _m_o_d_e argument

                 and then calling the _c_h_m_o_d() function with the following
                 arguments:

                  1. The same _p_a_t_h argument as in the _m_k_d_i_r() call

                  2. The value _(_S___I_W_U_S_R_|_S___I_X_U_S_R_|_~_f_i_l_e_m_a_s_k_)_&_0_7_7_7 as the _m_o_d_e
                     argument, where _f_i_l_e_m_a_s_k is the file mode creation mask
                     of the process (see the System Interfaces volume of
                     POSIX.1-2017, _u_m_a_s_k())

                 Each _d_i_r operand that names an existing directory shall be
                 ignored without error.

OOPPEERRAANNDDSS
       The following operand shall be supported:

       _d_i_r       A pathname of a directory to be created.

SSTTDDIINN
       Not used.

IINNPPUUTT FFIILLEESS
       None.

EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS
       The following environment variables shall affect the execution of
       _m_k_d_i_r:

       _L_A_N_G      Provide a default value for the internationalization
                 variables that are unset or null. (See the Base Definitions
                 volume of POSIX.1-2017, _S_e_c_t_i_o_n _8_._2, _I_n_t_e_r_n_a_t_i_o_n_a_l_i_z_a_t_i_o_n
                 _V_a_r_i_a_b_l_e_s for the precedence of internationalization
                 variables used to determine the values of locale categories.)

       _L_C___A_L_L    If set to a non-empty string value, override the values of
                 all the other internationalization variables.

       _L_C___C_T_Y_P_E  Determine the locale for the interpretation of sequences of
                 bytes of text data as characters (for example, single-byte as
                 opposed to multi-byte characters in arguments).

       _L_C___M_E_S_S_A_G_E_S
                 Determine the locale that should be used to affect the format
                 and contents of diagnostic messages written to standard
                 error.

       _N_L_S_P_A_T_H   Determine the location of message catalogs for the processing
                 of _L_C___M_E_S_S_A_G_E_S.

AASSYYNNCCHHRROONNOOUUSS EEVVEENNTTSS
       Default.

SSTTDDOOUUTT
       Not used.

SSTTDDEERRRR
       The standard error shall be used only for diagnostic messages.

OOUUTTPPUUTT FFIILLEESS
       None.

EEXXTTEENNDDEEDD DDEESSCCRRIIPPTTIIOONN
       None.

EEXXIITT SSTTAATTUUSS
       The following exit values shall be returned:

        0    All the specified directories were created successfully, or the
             --pp option was specified and all the specified directories either
             already existed or were created successfully.

       >0    An error occurred.

CCOONNSSEEQQUUEENNCCEESS OOFF EERRRROORRSS
       Default.

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       The default file mode for directories is _a=_r_w_x (777 on most systems)
       with selected permissions removed in accordance with the file mode
       creation mask. For intermediate pathname components created by _m_k_d_i_r,
       the mode is the default modified by _u+_w_x so that the subdirectories can
       always be created regardless of the file mode creation mask; if
       different ultimate permissions are desired for the intermediate
       directories, they can be changed afterwards with _c_h_m_o_d.

       Note that some of the requested directories may have been created even
       if an error occurs.

EEXXAAMMPPLLEESS
       None.

RRAATTIIOONNAALLEE
       The System V --mm option was included to control the file mode.

       The System V --pp option was included to create any needed intermediate
       directories and to complement the functionality provided by _r_m_d_i_r for
       removing directories in the path prefix as they become empty.  Because
       no error is produced if any path component already exists, the --pp
       option is also useful to ensure that a particular directory exists.

       The functionality of _m_k_d_i_r is described substantially through a
       reference to the _m_k_d_i_r() function in the System Interfaces volume of
       POSIX.1-2017. For example, by default, the mode of the directory is
       affected by the file mode creation mask in accordance with the
       specified behavior of the _m_k_d_i_r() function. In this way, there is less
       duplication of effort required for describing details of the directory
       creation.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _c_h_m_o_d, _r_m, _r_m_d_i_r, _u_m_a_s_k

       The Base Definitions volume of POSIX.1-2017, _C_h_a_p_t_e_r _8, _E_n_v_i_r_o_n_m_e_n_t
       _V_a_r_i_a_b_l_e_s, _S_e_c_t_i_o_n _1_2_._2, _U_t_i_l_i_t_y _S_y_n_t_a_x _G_u_i_d_e_l_i_n_e_s

       The System Interfaces volume of POSIX.1-2017, _m_k_d_i_r(), _u_m_a_s_k()

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  In the event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE and The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                             MKDIR(1)
