Transferring files from Windows to Ubuntu can be done in several ways. Here are a couple of methods:

1. Using SCP (Secure Copy Protocol):

• Install an SCP client on your Windows machine, such as PuTTY’s pscp.
• Use the following command format in your Windows command prompt:
  pscp <Source_File> <Linux_Username>@<Destination_Address>:<Destination_Directory>
• For example, to transfer file.txt from the C drive to the home directory of a user named ubuntu_user on the Linux machine with IP address 192.168.1.10, you would use:
  pscp C:\file.txt ubuntu_user@192.168.1.10:/home/ubuntu_user/
• You will need to authenticate with the Linux machine to complete the transfer.

2. Using WinSCP:

• Install WinSCP on your Windows machine.
• Open WinSCP and enter the credentials of your Ubuntu machine.
• Drag and drop files from the Windows interface to the Ubuntu interface within WinSCP to transfer them.

Remember to have an SSH server installed on your Ubuntu machine for these methods to work. You can install it using the command:sudo apt install openssh-server

Choose the method that best suits your needs and follow the instructions to transfer your files. If you’re transferring files between systems in a VirtualBox environment, you can also set up a shared folder in VirtualBox Manager and mount it in Ubuntu.