Here, I just finalized the Linux distribution for my Lab21.
c:\>certutil -hashfile ubuntu-20.04.1-live-server-amd64.iso sha256
SHA256 hash of ubuntu-20.04.1-live-server-amd64.iso:
443511f6bf12402c12503733059269a2e10dec602916c0a75263e5d990f6bb93
CertUtil: -hashfile command completed successfully.
C:\>certutil -hashfile ubuntu-20.04.3-desktop-amd64.iso sha256
SHA256 hash of ubuntu-20.04.3-desktop-amd64.iso:
5fdebc435ded46ae99136ca875afc6f05bde217be7dd018e1841924f71db46b5
CertUtil: -hashfile command completed successfully.
C:\>certutil -hashfile AlmaLinux-8.5-x86_64-dvd.iso sha256
SHA256 hash of AlmaLinux-8.5-x86_64-dvd.iso:
54b8881bebd924e4699ed12634187a82156fdb0fa57ec24058d04d70d2f033b3
CertUtil: -hashfile command completed successfully.