Installation process as simple as running a single command (assuming you have Golang installed on your computer, instructions can be found here
https://go.dev/doc/install)
To install the command line tool you have to run this:
go install github.com/shadowy-pycoder/go-bitcoin-message-tool/cmd/bmt@latest
This will compile an executable program for your operating system and allow you to sign, verify messages and create wallets just by running a single command like
bmt or
bmt.exe~
Full instructions on how to use the app you can find here:
https://github.com/shadowy-pycoder/go-bitcoin-message-tool/blob/master/README.mdIf you want, I can create an AppImage of that for you.