How to use the mkdir command under Linux

linux mkdir command is used to create a directory with a specified name. The user who creates the directory is required to have write permissions in the current directory, and the specified directory name cannot be an existing directory in the current directory.

1. Command format:
mkdir [options] Directory...

2． Command function:
The mkdir command can be used to create a folder or directory named by dirname (specified file name) at the specified location. The user who creates a folder or directory must have write permissions on the parent folder of the folder being created. Moreover, the created folder (directory) cannot have the same name as the file name in its parent directory (that is, the parent folder), that is, there cannot be a file with the same name in the same directory (case-sensitive).

3. Command parameters:
-m, --mode=mode, set permissions (similar to chmod), instead of rwxrwxrwx minus umask
-p, --parents It can be a path name . At this time, if some directories in the path do not yet exist, after adding this option, the system will automatically create those directories that do not yet exist, that is, multiple directories can be created at one time;
-v, --verbose Each time Display information when creating a new directory
--help Display this help information and exit
--version Output version information and exit

4． Command example:
Example 1: Create an empty directory
Command:
mkdir test1
Output:

Copy code The code is as follows:

[root@localhost soft]# cd test
[root@localhost test]# mkdir test1
[root@localhost test]# ll
Total 4drwxr-xr-x 2 root root 4096 10-25 17 :42 test1
[root@localhost test]

#Example 2: Recursively create multiple directories
Command:
mkdir -p test2/test22
Output:

Copy code The code is as follows:

[root@localhost test]# mkdir -p test2/test22
[root@localhost test]# ll
Total 8drwxr-xr -x 2 root root 4096 10-25 17:42 test1
drwxr-xr-x 3 root root 4096 10-25 17:44 test2
[root@localhost test]# cd test2/
[root @localhost test2]# ll
Total 4drwxr-xr-x 2 root root 4096 10-25 17:44 test22
[root@localhost test2]

#Instance 3: Create permissions For the directory of 777
Command:
mkdir -m 777 test3
Output:

Copy code The code is as follows:

[root@localhost test]# mkdir -m 777 test3
[root@localhost test]# ll
Total 12drwxr-xr-x 2 root root 4096 10-25 17:42 test1
drwxr-xr-x 3 root root 4096 10-25 17:44 test2
drwxrwxrwx 2 root root 4096 10-25 17:46 test3
[root@localhost test]

#Explanation: The permissions of
test3 are rwxrwxrwx

Example 4: Display information when creating a new directory
Command:
mkdir -v test4
Output:

Copy code The code is as follows:

[root@localhost test]# mkdir -v test4
mkdir: The directory "test4" has been created
[root@localhost test]# mkdir -vp test5/test5-1
mkdir: The directory "test5" has been created ”
mkdir: The directory “test5/test5-1” has been created
[root@localhost test]

#Example 5: One command to create the directory structure of the project
Reference:
Command:
mkdir -vp scf/{lib/,bin/,doc/{info,product},logs/{info,product},service/deploy/{info,product}}
Output ：

Copy code The code is as follows:

[root@localhost test]# mkdir -vp scf/{lib/,bin/,doc/{info,product},logs/ {info,product},service/deploy/{info,product}}
mkdir: The directory "scf" was created
mkdir: The directory "scf/lib" was created
mkdir: The directory "scf" was created /bin”
mkdir: The directory “scf/doc” has been created
mkdir: The directory “scf/doc/info” has been created
mkdir: The directory “scf/doc/product” has been created
mkdir : Directory "scf/logs" has been created
mkdir: Directory "scf/logs/info" has been created
mkdir: Directory "scf/logs/product" has been created
mkdir: Directory "scf/" has been created service”
mkdir: The directory “scf/service/deploy” has been created
mkdir: The directory “scf/service/deploy/info” has been created
mkdir: The directory “scf/service/deploy/product” has been created ”
[root@localhost test]# tree scf/
scf/
|-- bin
|-- doc
| |-- info
| `-- product
|-- lib
|-- logs
| |-- info
| `-- product
`-- service
`-- deploy
|-- info
      `-- product
12 directories, 0 files
[root@localhost test]

#

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