Unable to verify Ubuntu 21.04 ISO

ubuntu 21.04 download verification failure. trying to verify download with command: ubundu 21.04$ echo "fa95fb748b34d470a7cfa5e3c1c8fa1163e2dc340cd5a60f7ece9dc963ecdf88 *ubuntu-21.04-desktop-amd64.iso" | shasum -a 256 --check. It says run this command in your terminal in the directory the iso. Is iso files are part of this download? because when I run command in the download folder, I get failure message below:

me@me:~/Downloads/ubundu 21.04$ echo "fa95fb748b34d470a7cfa5e3c1c8fa1163e2dc340cd5a60f7ece9dc963ecdf88 *ubuntu-21.04-desktop-amd64.iso" | shasum -a 256 --check
shasum: ubuntu-21.04-desktop-amd64.iso: 
ubuntu-21.04-desktop-amd64.iso: FAILED open or read
shasum: WARNING: 1 listed file could not be read

If ISO files not a part of ubuntu 21.04 download, where do i get them? and do i have to save then under the same /Downloads/ubundu 21.04 directory? After download, how do I install ubuntu 21.04? Thank you.

Solution 1:

It seems that you are unable to find the location of the iso from the command line, I would suggest you check it with a GUI program.

Install gtkhash with the command

sudo apt install gtkhash

Select the .iso file in gtkhash, and generate the SHA256 sum.

Copy the given SHA256 hash in the Check textbox, and the software would show a checkmark if they match.

Afterwards, follow the official tutorials for creating a bootable live USB, and using it to install Ubuntu.