We’re going to talk about terminal multiplexor! We’re talking about TMUX!!
Few months ago each one on system’s department was starting working with this multiplexor terminal and we’re so satisfied , in fact, i’ve needed write this post!
I also remember with nostalgy when I started to use “screen”, a very useful tool used to:
Moreover, Terminator(Linux) and iTerm(Mac) has been the consoles used for simultaneous typing to arbitrary groups of terminals to do some tasks such as new code deployment or changes in configurations. Furthermore, you can arrange terminals in a grid for each tab, really useful!!!
If this iTerm/Terminator features are really useful, you can imagine combine with screen features, here we have TMUX!! a few weeks ago in a very rainy sunday afternoon i learned many functionalities and features customizing my work environment, it was so productivity, i recommend for any system administrator.
here we go:
I’ve attached my tmux configuration profile (~/.tmux.conf), i’m going to comment my preferit parameters:
# Alert on activity in any panel set -g visual-activity on # Set buffer size of any terminal in 10000 lines set -g buffer-limit 10000 # C^B+r reload the tmux configuration without close/open tmux instances unbind r bind r source-file ~/.tmux.conf \; display "Reloaded!" #C^B+a :(All) write or send signal simultaneously to all panels in a tab unbind a bind a setw synchronize-panes on # C^B+o :(One) write or send signal just one panel unbind o bind o setw synchronize-panes off # index panel and index tab start in 1, default is 0 set -g base-index 1 setw -g pane-base-index 1 # Custom status bar # Powerline symbols: ⮂ ⮃ ⮀ ⮁ ⭤ set -g status-utf8 on set -g status-left-length 32 set -g status-right-length 150 set -g status-interval 2 set -g status-left '#[fg=colour15,bg=colour238,bold] #S #[fg=colour238,bg=colour234,nobold]⮀' set -g status-right '#[fg=colour245]⮃ %R ⮃ %d %b #[fg=colour254,bg=colour234,nobold]⮂#[fg=colour16,bg=colour254,bold] #h ' set -g window-status-format "#[fg=white,bg=colour234] #I #W " set -g window-status-current-format "#[fg=colour234,bg=colour39]⮀#[fg=colour16,bg=colour39,noreverse,bold] #I ⮁ #W #F #[fg=colour39,bg=colour234,nobold]⮀"
Here you have a script to easily use it, very powerful in any emergency if you need manage several servers
The previous gif I show us how can I launch the script, i’ve connected to 8 nodes with the same role (magenta web servers). As you can see my script add a new tmux tab and split it in 8 panells and connect each one to different node. For run this, you must run inside one tmux console.