Explain what a mount point is in Linux and how it is used for working with the file system.

A mount point in Linux is a directory in the filesystem where another filesystem or storage device is attached (mounted). After mounting, the contents of the attached device become accessible through this path.

For example, if you have an external disk, you can mount it to the directory /mnt/usb. After that, all files from the disk will be accessible via the path /mnt/usb.

The command for mounting:

mount /dev/sdb1 /mnt/usb

Thus, the mount point acts as a link between the root filesystem and additional filesystems, allowing you to work with them uniformly through the directory tree.