In Linux, mkdir means creating a directory and is the abbreviation of "make directories"; this command is used to create a new directory, the syntax is "mkdir [-mp] directory name"; set the parameter "- m" is used to manually configure the permissions to create directories, and setting the parameter "-p" is used to create all directories recursively.
#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.
What does mkdir mean in Linux
The mkdir command is the abbreviation of make directories, which is used to create new directories. This command can be used by all users.
The basic format of the mkdir command is:
[root@localhost ~]# mkdir [-mp] 目录名
The -m option is used to manually configure the permissions of the created directory instead of using the default permissions.
-p option creates all directories recursively, taking the creation of /home/test/demo as an example. By default, you need to create each directory layer by layer. If you use the -p option, the system will Automatically create /home, /home/test and /home/test/demo for you.
Examples are as follows:
Create a directory.
[root@localhost ~]#mkdir cangls [root@localhost ~]#ls anaconda-ks.cfg cangls install.log install.log.syslog
We create a directory named cangls. You can see that this directory has been created through the ls command. Note that we use a relative path when creating the directory, so this directory is created under the current directory.
Use the -p option to create directories recursively.
[root@localhost ~]# mkdir lm/movie/jp/cangls mkdir:无法创建目录"lm/movie/jp/cangls":没有那个文件或目录 [root@localhost ~]# mkdir -p lm/movie/jp/cangls [root@localhost ~]# ls anaconda-ks.cfg cangls install.log install.log.syslog lm [root@localhost ~]# ls lm/ movie
#Only the first-level subdirectory is viewed here. In fact, the subsequent jp directory and cangls directory have been created
Related recommendations: "Linux Video Tutorial"
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The methods to enter Linux maintenance mode include: 1. Edit the GRUB configuration file, add "single" or "1" parameters and update the GRUB configuration; 2. Edit the startup parameters in the GRUB menu, add "single" or "1". Exit maintenance mode only requires restarting the system. With these steps, you can quickly enter maintenance mode when needed and exit safely, ensuring system stability and security.

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The core components of the Linux system include the kernel, file system, and user space. 1. The kernel manages hardware resources and provides basic services. 2. The file system is responsible for data storage and organization. 3. Run user programs and services in the user space.

Maintenance mode is a special operating level entered in Linux systems through single-user mode or rescue mode, and is used for system maintenance and repair. 1. Enter maintenance mode and use the command "sudosystemctlisolaterscue.target". 2. In maintenance mode, you can check and repair the file system and use the command "fsck/dev/sda1". 3. Advanced usage includes resetting the root user password, mounting the file system in read and write mode and editing the password file.

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Maintenance mode plays a key role in Linux system management, helping to repair, upgrade and configuration changes. 1. Enter maintenance mode. You can select it through the GRUB menu or use the command "sudosystemctlisolaterscue.target". 2. In maintenance mode, you can perform file system repair and system update operations. 3. Advanced usage includes tasks such as resetting the root password. 4. Common errors such as not being able to enter maintenance mode or mount the file system, can be fixed by checking the GRUB configuration and using the fsck command.

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