The use of UNIX mkdir commands

[Syntax]: mkdir [-M mode] [-p] Directory name

[Note]: This command is used to establish the directory, the access mode of the directory is determined by the mask (umask), requires write permission to its parent directory, the UID and GID of the directory for the actual UID and GID
-M Create directory in specified access mode
-P establishes all of its nonexistent parent directories when the directory is created
[Example]:
mkdir tmp creating subdirectories in current directory TMP
Mkdir-m 777/TMP/ABC with all user-readable writable executable access modes
Set up directory/TMP/AAA, access mode See command chmod
Mkdir-p/tmp/a/b/c set up the directory/tmp/a/b/c, if there is no directory/tmp/a and/tmp/a/b

The use of UNIX mkdir commands