Ruby Kernel system, exec and %x

The Ruby Core Library documentation is very similar for Kernel.system, Kernel.exec and %x[..]. Recently I needed to kick off a system process, so I spent some time working with all 3 options. Kernel.exec does exactly what the documentation states:Replaces the current process by running the given external command. If exec is given a single argument, that argument is taken as a line that is subject

[kitokitoki]

system,exec