This file contains customization information for the text editor Emacs. This file contains configuration settings for the Pine mail and news reader. It should be edited from within the Pine application. This directory stores customization information for the CDE windowing environment. Setting Shell and Environment Variables UNIX uses variables to store configuration information.
Variables are strings of characters that are used to represent other strings or numbers.
The system then substitutes the variable's value in its place. In UNIX there are two types of variables, environment variables and shell variables. Environment variables are part of your entire login session and carry over from one shell to the next. In contrast, shell variables are values that are valid only for the current shell and therefore do not carry over if you start a new shell. Additionally, environment variables are denoted by capital letters while shell variables are denoted by lower case letters.