![]() Tmux has some internal command facility using the prefix "Ctrl-b". The "tmux list-sessions" can be shortened to "tmux ls". We could have also entered "tmux attach" as attach command is an alias for attach-session and it will attach the most recently disconnected session by default. Now we are back in business, see the tmux status bar, etc. The session state would be as it would had the disconnection not occurred. Session_name: 1 windows (created Tue Apr 4 14:15:43 2017) If our session was interrupted (say network trouble or your connecting terminal suddenly turned off) you could login again (perhaps from another location or computer) and see you session remains available. Session_name: 1 windows (created Tue Apr 4 14:15:43 2017) (attached) Let's see check out the list-sessions option of tmux. tmux establishes the default visual environment including a bottom status bar. We can do the usual type of shell based work within this session. Let's create a tmux session named "session_name". Some useful commands:Īfter a command shell has been established via login by ssh or similar, You can invoke the tmux command. “tmux attach-session –t session_name” Attach to session by name of sessionĬontrol-b (C-b) is the default escape character, I tend to remap it to C-\ since it affects my command line editing. “tmux attach-session” Attach to most recently used unattached session “tmux detach” Detach the currently attached session “tmux new –s session_name” Create a new tmux session named session_name “tmux” or “tmux new” Create a new tmux session Here’s a quick summary of connection management related command features: There’s a bit more excitement in the tmux community as it’s the new kid on the block and enjoys active development with some strong features. Tmux is a more recent offering supporting terminal multiplexing features. “screen –r” Reattach to the last previous session This reestablishes your previous environment that the detached screen process maintained for you, If your terminal application session disconnects for one reason or another, you can login to the host and attach to the previous session with “screen –r”. If you’ve established a ssh connection to a server with screen installed, enter the command “screen” at the terminal prompt. Screen or GNU Screen is the classic full-screen window manager. Using one terminal screen you can manage several different sessions. If your connection unexpectedly drops, you can pick up the session after the connection is reestablished. ![]() You can start a connection from one location, detach and pick up the session from another location. Why session management? If you are using Linux or Unix in the command line environment, being able to manage the shell environment across various connection sessions can be helpful. These programs offer other rich features such as managing display of multiple sessions and customizations which are not covered here. In this brief introduction we look at maintaining a command line environment session across multiple connection sessions. Screen (or gnu screen) and tmux are terminal multiplexers with features supporting command line terminal window management.
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