Common Linux commands: mkdir and linuxmkdir

Common Linux commands: mkdir and linuxmkdir

Link: http://www.cnblogs.com/MartinChentf/p/6076075.html (reprinted please indicate the source)

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

1. Command Format

Mkdir [Option] Directory Name

2. Command Options

-M =Mode

Specify the access permission for the directory, similar to chmod.

-P if the directory already exists, no error is prompted. If the parent directory does not exist, the parent directory is created. This option is often used to create a cascading directory.

-V displays prompt information for each directory.

3. Instance

Instance 1: Create the baklog directory in the current directory.

/home/dodv81>umask
0002
/home/dodv81>mkdir baklog/home/dodv81>lldrwxrwxr-x   2 dodv81 dodv81 4096 Nov 17 23:21 baklog/home/dodv81>mkdir baklogmkdir: cannot create directory `baklog': File exists

By default, the mkdir command creates a directory in the current directory without any options. The default permission of the directory is777-umask. If the directory already exists, an error is prompted.

Instance 2: create multiple directories.

/home/dodv81/baklog>mkdir cep dod testlog/home/dodv81/baklog>lscep  dod  testlog

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

/home/dodv81/baklog>mkdir {cep,dod,testlog}/home/dodv81/baklog>lscep  dod  testlog

The following directory cannot be created:

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

Instance 3: Create a cascading directory. Subdirectories in the same directory are placed in 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:

Instance 4: Specify the permission for the directory. The specified permission isMode-umask. For example, if mode = rx, the final permission is 555-2 = 554, that is, 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/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 20dr -- r -- 2 dodv81 dodv81 4096 Nov 17 48 ad-w -- w ---- 2 dodv81 dodv81 4096 Nov 17 48 bdrw-rw-r -- 2 dodv81 dodv81 4096 Nov 17 cdr-xr-x 2 dodv81 dodv81 4096 Nov 17 48 ddrwxrwxr-x 2 dodv81 dodv81 4096 Nov 17 e

 

Instance 5: view the process information of 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: directories