Sessions
By running tmux with no arguments, you create a brand new session. In tmux, the base unit is called a session. A session can have one or more windows. A window can be broken into one or more panes. We'll revisit this topic in its own whole chapter (for more information, refer to Chapter 3, Sessions, Windows, and Panes); however, as a sneak preview, what we have here on the current screen is a single pane taking up the whole window in a single session. Imagine that it could be split into two or more different terminals, all running different programs, and each visible split of the terminal is a pane. More on this will be covered in the later chapters.
Tip
What is a session in tmux?
It may be useful to think of a tmux session as a login ...
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