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mkdir(1) [sunos man page]

mkdir(1)							   User Commands							  mkdir(1)

NAME
mkdir - make directories SYNOPSIS
mkdir [-m mode] [-p] dir... DESCRIPTION
The mkdir command creates the named directories in mode 777 (possibly altered by the file mode creation mask umask(1)). Standard entries in a directory (for instance, the files ".", for the directory itself, and "..", for its parent) are made automatically. mkdir cannot create these entries by name. Creation of a directory requires write permission in the parent directory. The owner-ID and group-ID of the new directories are set to the process's effective user-ID and group-ID, respectively. mkdir calls the mkdir(2) system call. setgid and mkdir To change the setgid bit on a newly created directory, you must use chmod g+s or chmod g-s after executing mkdir. The setgid bit setting is inherited from the parent directory. OPTIONS
The following options are supported: -m mode This option allows users to specify the mode to be used for new directories. Choices for modes can be found in chmod(1). -p With this option, mkdir creates dir by creating all the non-existing parent directories first. The mode given to intermedi- ate directories will be the difference between 777 and the bits set in the file mode creation mask. The difference, how- ever, must be at least 300 (write and execute permission for the user). OPERANDS
The following operand is supported: dir A path name of a directory to be created. USAGE
See largefile(5) for the description of the behavior of mkdir when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXAMPLES
Example 1: Using mkdir The following example: example% mkdir -p ltr/jd/jan creates the subdirectory structure ltr/jd/jan. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of mkdir: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 All the specified directories were created successfully or the -p option was specified and all the specified directories now exist. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
rm(1), sh(1), umask(1), intro(2), mkdir(2), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.10 1 Feb 1995 mkdir(1)

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MKDIR(2)						     Linux Programmer's Manual							  MKDIR(2)

NAME
mkdir - create a directory SYNOPSIS
#include <sys/stat.h> #include <sys/types.h> int mkdir(const char *pathname, mode_t mode); DESCRIPTION
mkdir() attempts to create a directory named pathname. The argument mode specifies the permissions to use. It is modified by the process's umask in the usual way: the permissions of the created directory are (mode & ~umask & 0777). Other mode bits of the created directory depend on the operating system. For Linux, see below. The newly created directory will be owned by the effective user ID of the process. If the directory containing the file has the set-group- ID bit set, or if the file system is mounted with BSD group semantics (mount -o bsdgroups or, synonymously mount -o grpid), the new direc- tory will inherit the group ownership from its parent; otherwise it will be owned by the effective group ID of the process. If the parent directory has the set-group-ID bit set then so will the newly created directory. RETURN VALUE
mkdir() returns zero on success, or -1 if an error occurred (in which case, errno is set appropriately). ERRORS
EACCES The parent directory does not allow write permission to the process, or one of the directories in pathname did not allow search per- mission. (See also path_resolution(7).) EEXIST pathname already exists (not necessarily as a directory). This includes the case where pathname is a symbolic link, dangling or not. EFAULT pathname points outside your accessible address space. ELOOP Too many symbolic links were encountered in resolving pathname. ENAMETOOLONG pathname was too long. ENOENT A directory component in pathname does not exist or is a dangling symbolic link. ENOMEM Insufficient kernel memory was available. ENOSPC The device containing pathname has no room for the new directory. ENOSPC The new directory cannot be created because the user's disk quota is exhausted. ENOTDIR A component used as a directory in pathname is not, in fact, a directory. EPERM The file system containing pathname does not support the creation of directories. EROFS pathname refers to a file on a read-only file system. CONFORMING TO
SVr4, BSD, POSIX.1-2001. NOTES
Under Linux apart from the permission bits, only the S_ISVTX mode bit is honored. That is, under Linux the created directory actually gets mode (mode & ~umask & 01777). See also stat(2). There are many infelicities in the protocol underlying NFS. Some of these affect mkdir(). SEE ALSO
mkdir(1), chmod(2), chown(2), mkdirat(2), mknod(2), mount(2), rmdir(2), stat(2), umask(2), unlink(2), path_resolution(7) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2008-05-13 MKDIR(2)

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