How can I list the current directory and its subdirectories in Linux?

To list all files and directories in the current directory and its subdirectories, you can use the `ls` command with the recursive option `-R`. Here is the specific command:

ls -R

This command will recursively list all files and directories in the current directory and its subdirectories. The output will include the files and directories in the current directory and display the contents of the subdirectories.

To display only the directories and not the files, you can use the `ls` command in combination with the `grep` command, as shown below:

ls -R | grep ":$"

This command will display all directories in the current directory and its subdirectories.

Of course, you can also add other options as needed to make a more detailed listing. Please refer to the documentation of the relevant command for more information.