shell variables

Shell variables are named storage locations within a command-line interface that hold data or values your computer uses during a session. They help you customize and control how commands behave or store information like user preferences, file paths, or system settings. For example, a variable might store the current username or the location of a particular directory. You can create, modify, or delete these variables to make working with the shell more efficient. They are temporary for the session unless explicitly saved, acting like labeled containers for information used by the shell environment.