mkusb version 5 is uploaded in a compressed tar file, a tarball.
New in version 5: In response to a user request mkusb will install pv automatically (if not already installed), when the user answers yes; the default in no (y/N).
There is only one attached file at post #1 and it contains the new version 5 of mkusb and also previous versions for users that like simple scripts. Extract the script from the compressed file with one of these commands (or file-roller).
I use the file name mkusb, put it into my ~/bin directory and make it executable.
tar -xvOf mkusb-ball.tar.gz mkusb-old-plus-minor-fix > mkusb
tar -xvOf mkusb-ball.tar.gz mkusb3 > mkusb
tar -xvOf mkusb-ball.tar.gz mkusb4 > mkusb
tar -xvOf mkusb-ball.tar.gz mkusb5 > mkusb
The current size and md5sum are listed in the next code box. Check that the file is correct before you start using it!
Use the new version 5, or stay with an earlier version for example version 3 with more direct interaction in the terminal window.
wc -c mkusb;md5sum mkusb # from mkusb5.gz
wc -c mkusb;md5sum mkusb # from mkusb4.gz
wc -c mkusb;md5sum mkusb # from mkusb3.gz
wc -c mkusb-old-plus-minor-fix; md5sum mkusb-old-plus-minor-fix