I use Linux and I was trying to use fastboot to run a command to flash the partition table on my Moto e (2015).

Whenever I did it, all I'd see was the words:

no permissions   fastboot


Well, it didn't take long to find out from askubuntu.com that I just had to type 'sudo' in front of my command.

So, of course, instead of just running 'fastboot', I instead ran...


sudo fastboot 


... followed by whatever options there were for the command. Really simple.