Common Linux commands in work: mkdir command

This article link: http://www.cnblogs.com/MartinChentf/p/6076075.html (reproduced please specify the source)

In a Linux system, the mkdir command is used to create a directory or a cascading directory.

1. Command format

mkdir [Options] Directory name

2. Command options

-m=Mode

Specify access permissions for the directory, similar to chmod.

-P If the directory already exists, there is no error message. If the parent directory does not exist, the parent directory will be created. This option is commonly used to create cascading catalogs.

-V Displays the prompt information for each directory.

3. Example

Example 1: Create the Baklog directory in the current directory.

/home/dodv81>umask
0002
/home/dodv81>mkdir  baklog/home/dodv81>lldrwxrwxr-x   2  4096:  baklog/home/dodv81>mkdir  baklog mkdir: Cannot create directory ' Baklog': File exists

The mkdir command does not have any options to create the directory by default in the current directory, and the default permission for the directory is 777-umask. An error will be prompted if the directory already exists.

Example 2: Create multiple directories.

/home/dodv81/baklog>mkdir  cep dod testlog/home/dodv81/baklog>lsCEP  DoD  Testlog

Or, multiple directories are enclosed in curly braces ({}) and separated by commas.

/home/dodv81/baklog>mkdir  {cep,dod,testlog}/home/dodv81/baklog>ls CEP  DoD  testlog

There can be no whitespace before or after the comma, otherwise the following directory will be created:

/home/dodv81/baklog>mkdir  {CEP, DOD, testlog}/home/dodv81/baklog>ls{ CEP,  DoD,  testlog}

Example 3: Create a cascading directory. Subdirectories in the same directory are enclosed in curly braces and separated by commas.

/home/dodv81>mkdir -P baklog/{bin,lib,lig/{Cep,dod,testlog}}/home/dodv81>ls -R baklog/baklog/: Bin  lib  ligbaklog/bin:baklog/lib:baklog/ lig:cep  dod  testlogbaklog/lig/cep:baklog/lig/dod:baklog/lig/testlog :

Example 4: Specify permissions for the directory, and the specified permissions are mode-umask. For example, Mode=rx, the final permission is 555-2=554, which is rw-rw-r--.

/home/dodv81/baklog/bin> mkdir -m= R A --read-only
/home/dodv81/baklog/bin> mkdir -m=w  B --Write only/home/dodv81/baklog/bin> mkdir -m= RW C --Read and write/home/dodv81/baklog/bin> mkdir -m= Rx D --read executable/home/dodv81/baklog/bin> mkdir -m= rwx E --Read and write executable/home/dodv81/baklog/bin>Lltotal -Dr--r--r--2dodv81 dodv814096Nov -  at: -AD-W--W----2dodv81 dodv814096Nov -  at: -BDRW-rw-r--2dodv81 dodv814096Nov -  at: -CDR-xr-xr-x2dodv81 dodv814096Nov -  at: -DDRWXRWXR-X2dodv81 dodv814096Nov -  at: theE

Example 5: Viewing process information for creating a directory

/home/dodv81>mkdir -vp baklog/{bin,lib,lig/{cep,dod,testlog}}mkdir: Created directory ' Baklog'mkdir: Created directory ' Baklog/bin'mkdir: Created Directory ' Baklog/lib'mkdir: Created directory ' Baklog/lig'mkdir: Created Directory ' baklog/lig/cep'mkdir: Created directory ' Baklog/lig/dod'mkdir : Created directory ' Baklog/lig/testlog'

Common Linux commands at work: directory

Common Linux commands in work: mkdir command