Could anyone help me with: How to start a command-line terminal for Maple in Linux Ubuntu? Thanks a lot

Could anyone show me the exact command lines or exact steps to install the FGb package, specifically FGb-1.68.x86_64_linux.tar.gz here, to Maple 2020 in Linux Ubuntu? Many thanks.

FYI, here is one of the error messages I got: 

"mv <14539>/*.so <~/maple2020>
bash: syntax error near unexpected token `14539'"

What does the error message, "Error, (in monspt) invalid input: ArrayTools:-Reverse expects its 1st argument, A, to be of type rtable, but received [[0, 4], [1, 3], [2, 2], [3, 1], [4, 0], [0, 3], [1, 2], [2, 1], [3, 0], [0, 2], [1, 1], [2, 0], [0, 1], [1, 0], [0, 0]]
" exactly mean, and how to find the required rtable type, and how to make it work? Thanks a lot!

I have a .mla file, filename.mla, in a folder and typed with(filename), but Maple says "Error, invalid input: with expects its 1st argument, pname, to be of type {`module`, package}, but received convex". So how to use a  .mla file in Maple exactly?

Thanks a lot.

I have the Ubuntu of Linux app installed in Windows 10. Could anyone help me with exactly how to install Maple2020.0LinuxX64Installer.run in the Ubuntu terminal? Many thanks.