VirtFS (Jailed Shell)
VirtFS provides a jailed shell environment for a user connected to a server via SSH. Unlike a normal shell environment, a jailed shell environment prevents access to data outside of the user's home directory, increasing security for shell account users. You will have no access to any system or server files; only to your own directory.
You can use the interface in your cPanel when enabled or use a terminal emulator such as Putty which is widely used and free