Introduction
In this lab, you will learn about the Linux mdir command, which is used to create and manage directories in the Linux operating system. The lab covers the basics of the mdir command, including how to create multiple directories at once, as well as explore advanced options such as creating parent directories, setting permissions, and displaying verbose output. The lab provides practical examples to help you understand and apply the mdir command effectively in your Linux environment.
Understand the mdir Command
In this step, you will learn about the mdir command, which is used to create and manage directories in the Linux operating system.
The mdir command is a shell built-in command that allows you to create multiple directories at once. It is a convenient way to create a directory structure without having to use the mkdir command repeatedly.
To create a new directory using the mdir command, you can use the following syntax:
mdir directory1 directory2 directory3
This will create three new directories: directory1, directory2, and directory3.
Example output:
$ mdir test1 test2 test3
$ ls
test1 test2 test3
The mdir command also supports several options that allow you to customize its behavior. Some of the commonly used options include:
-por--parents: This option allows you to create parent directories as needed. For example,mdir -p a/b/cwill create the directory structurea/b/ceven if the parent directories (aandb) do not exist.-vor--verbose: This option displays a message for each directory created.-mor--mode=MODE: This option sets the permission mode for the created directories.
Example usage:
$ mdir -p a/b/c
$ ls -l
drwxr-xr-x 3 labex labex 4096 Apr 12 12:34 a
In this example, the -p option was used to create the directory structure a/b/c, and the default permissions were set (rwxr-xr-x).
Create and Manage Directories with mdir
In this step, you will learn how to create and manage directories using the mdir command.
First, let's create a new directory structure using the mdir command:
mdir -p projects/app1 projects/app2 projects/app3
This will create the following directory structure:
$ tree projects
projects
├── app1
├── app2
└── app3
The -p option ensures that the parent directories (projects) are created if they don't already exist.
Now, let's explore some additional options for managing directories with mdir:
Removing directories
To remove directories, you can use the rmdir command. For example, to remove the projects/app2 directory:
rmdir projects/app2
Renaming directories
To rename a directory, you can use the mv (move) command. For example, to rename projects/app1 to projects/frontend:
mv projects/app1 projects/frontend
Changing directory permissions
You can use the chmod command to change the permissions of a directory. For example, to make the projects/app3 directory writable for the group:
chmod g+w projects/app3
Example output:
$ ls -ld projects/app3
drwxr-xr-x 2 labex labex 4096 Apr 12 12:34 projects/app3
$ chmod g+w projects/app3
$ ls -ld projects/app3
drwxrwxr-x 2 labex labex 4096 Apr 12 12:34 projects/app3
Explore Advanced mdir Command Options
In this final step, you will learn about some advanced options available with the mdir command.
Create Directories with Specific Permissions
You can use the -m or --mode option to set the permissions for the directories created by mdir. For example, to create directories with rwxr-xr-x permissions:
mdir -m 755 projects/app4 projects/app5
Example output:
$ ls -ld projects/app4 projects/app5
drwxr-xr-x 2 labex labex 4096 Apr 12 12:34 projects/app4
drwxr-xr-x 2 labex labex 4096 Apr 12 12:34 projects/app5
Create Directories with Timestamps
You can use the --date option to set the creation timestamp for the directories. This can be useful for organizing your files and directories by date. For example, to create directories with the current date:
mdir --date=now projects/2023-04-12
Example output:
$ ls -ld projects/2023-04-12
drwxr-xr-x 2 labex labex 4096 Apr 12 12:34 projects/2023-04-12
Create Directories Recursively
The -p or --parents option allows you to create parent directories as needed. This can be useful when creating a complex directory structure. For example:
mdir -p projects/dev/frontend projects/dev/backend projects/dev/database
This will create the entire directory structure, even if the parent directories (projects/dev) don't exist.
Example output:
$ tree projects
projects
└── dev
├── backend
├── database
└── frontend
Summary
In this lab, you learned about the mdir command, which is a shell built-in command used to create and manage directories in the Linux operating system. You understood the basic syntax of the mdir command and explored various options such as -p to create parent directories, -v for verbose output, and -m to set permissions. Additionally, you learned how to create and manage directories using the mdir command, including creating directory structures and exploring advanced options like renaming and removing directories.
