The tmux terminal multiplexer allows us to open multiple terminal windows in the same SSH session and continue the command execution even when we log out of the SSH session. This way we can execute long-running copy commands overnight without keeping the SSH session open.
Install tmux
On CentOS family Linux
yum install tmux
To start tmux and attach to the last session
tmux a
To keep the current session active
To continue the session execution even when you log out of the server, detach from the session before closing the connection. See the commands below.
Commands
To switch to binding mode
ctrl-b
Commands in binding mode
| d | Detach |
| % | Vertical split |
| “ | Horizontal split |
| arrows | Move between panes |
| c | Create new pane |
| p | Previous window |
| n | Next window |
| l | Last used window |
| q | Display window numbers |
| [ | Enable scroll with arrow keys or pgup, pgdown. Press Esc or q to return normal mode |
| x | Close the pane (will ask you to press “y” to confirm) |
Zooming
| cmd-shift + | zoom in |
| cmd-shift – | zoom out |
| cmd-shift 0 (zero) | 100% zoom |
Shared sessions
| tmux -S /tmp/shared_session | Start a new shared session |
| chmod 777 /tmp/shared_session | Allow anyone to join your session |
| tmux -S /tmp/shared_session attach | Attach to a shared session |