Sometimes you run a command and get a "command not found" error message.
After that you try to install the package that contains that command (I think that's what happens anyway?)
showmount: command not found
apt-get install showmount does nothing, so I guess the
showmount command is part of a package, but I don't know what that package is.
How can I find out what package I need to install to get whichever command I need? I am using Kali Linux.