Help with Linux terminal on Windows

I have enabled Windows subsystem for Linux by running Windows Powershell as administrator and ran the following:

$ Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux

After that I restarted my computer and installed Ubuntu. Then i ran the following commands:

$ sudo apt update
$ sudo apt upgrade --assume-yes

My problem is basically that when I'm using Windows CLI, the linux commands are not accepted.
I have searched online for possible mistakes I have made, but so far I haven't been able to solve this issue. Any possible help or suggestions would be very appreciated.

Both my OS and the Ubuntu versions are 64 bits.

Thanks in advance.