I'm posting this here because OS X is my main unix system, though I also use some linux stuff (synology and a ubuntu virtual machine in my mac). I've dabbled with unix off and on for more than 20 ...

That n is the reason that the echo command can also be used to add a linefeed to the end of a file that, for some reason, lacks one. Here’s a file that lacks a linefeed followed by the command that ...