MH & nmh: Email for Users & Programmers

May, 2006

UNIX Filesystem Overview

MH is different from other UNIX mail user agents because it takes special advantage of the UNIX filesystem. The Figure below is a diagram of typical files and directories that MH and uses.

Figure: Important parts of a UNIX filesystem


Here's an explanation of each of the filesystem parts:

To keep things simple, the diagram omits a lot of directories. It also omits some (or many) of the files in each directory.

One of the handiest ways to use the information in this figure is to create separate MH sessions. This lets you work on more than one message, in more than one folder, simultaneously.