Common operations and precautions for Linux command mkdir

Linux operating system is an operating system widely used in various computer systems and has powerful command line tools. Among them, mkdir (make directory) is a commonly used command for creating directories. In this article, we will discuss the common operations and precautions of the mkdir command, and provide specific code examples.

1. Basic usage

First, let’s take a look at the basic usage of the mkdir command:

mkdir [option] Directory name

Here, [Options] represents optional parameters that can be used to control the behavior of creating directories in more detail. Directory name is the name of the directory to be created.

For example, to create a directory named test in the current directory, you can execute the following command:

mkdir test

2. Multi-level Directory creation

Sometimes we need to create multi-level directories at once, which can be achieved using the -p option. For example, to create a directory named parent and create subdirectories child1 and child2 within it, you would execute the following command:

 mkdir -p parent/child1 parent/child2

This will create three directories parent, child1 and child2 at the same time.

3. Set permissions

When creating a directory, sometimes we need to set the permissions of the directory. You can use the chmod command to change the permissions of the created directory. For example, to set the permissions of the test directory to rwxr-xr-x, you can execute the following command:

chmod 755 test

4. Note Matters

When using the mkdir command, there are several points to note:

• If the directory to be created already exists, the mkdir command will report an error. To avoid this situation, you can use the -p option to create multi-level directories at once;
• When creating a directory, it may be restricted by system permissions. You need to ensure that you have sufficient permissions to create the directory;
• Pay attention to the legality of the directory naming and avoid using special characters or spaces.

5. Example

The following is a comprehensive example that demonstrates how to use the mkdir command to create a multi-level directory and set permissions:

mkdir -p project /{src,bin,lib}
chmod 755 project

The above command will create a directory named project, in which create src, bin and libThree subdirectories, and set the permissions of the project directory to rwxr-xr-x.

Conclusion

Through the introduction of this article, you should already know the common operations and precautions of the Linux command mkdir. In practical applications, flexible use of the mkdir command can manage the file system more efficiently and improve work efficiency. Hope the above content can be helpful to you.

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