tmux command

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AIX

I’ve started using tmux instead of screen lately. My version of screen (no longer maintained) doesn’t do vertical window splits where tmux does.

Just like screen, in AIX, I use backtick as my C-a. Backtick-c will create a new window. Backtick-d will disconnect the sessions. The command “tmux attach” will re-attach to my sessions and it remembers all my window splits which I never could do in screen.

Here is my AIX .tmux.conf cobbled together from google searches.

# Set option key
set-option -g prefix `
 
# Set status bar
set -g status-bg black
set -g status-fg white
set -g status-left "#[fg=green]#H"
 
unbind % # Remove default binding since were replacing
bind | split-window -h
bind - split-window -v
 
#set-option -g mouse-select-pane on
 
bind ` send-keys `
bind e send-keys "smitty etherchannel"
bind a send-keys "netstat -v | grep -i activ"
bind s send-keys "stty erase ^?"
 
# basic settings
set-window-option -g mode-keys vi # vi key
set-option -g status-keys vi
set-window-option -g utf8 on # utf8 support
set-window-option -g mode-mouse off # disable mouse
 
# copy mode to escape key
unbind [
bind Escape copy-mode
 
set-option -g mouse-select-pane off
 
# window title
set-option -g set-titles on
set-option -g set-titles-string '#S:#I.#P #W' # window number,program name,active (or not)
set-window-option -g automatic-rename on # auto name
 
# messages
#set-window-option -g mode-bg magenta
#set-window-option -g mode-fg black
#set-option -g message-bg magenta
#set-option -g message-fg black
 
# No visual activity
set -g visual-activity off
set -g visual-bell off
 
# status bar
set-option -g status-utf8 on
set-option -g status-justify right
set-option -g status-bg black
set-option -g status-fg cyan
set-option -g status-interval 5
set-option -g status-left-length 30
set-option -g status-left '#[fg=magenta]> #[fg=blue,bold]#T#[default]'
set-option -g status-right '#[fg=cyan]>> #[fg=blue,bold]###S #[fg=magenta]%R %m-%d#(acpi | cut -d ',' -f 2)#[default]'
set-option -g visual-activity on
set-window-option -g monitor-activity on
set-window-option -g window-status-current-fg white
 
# clock
set-window-option -g clock-mode-colour cyan
set-window-option -g clock-mode-style 24
 
# bind keys for synchronize-panes
bind -n C-x setw synchronize-panes on
bind -n M-x setw synchronize-panes off

And this is what one of my tmux screens look like: –

Update :

  • backtick + left/right/up/down will move to different panes
  • backtick + 0/1/2/etc will move to different screens
  • backtick + | will create a vertical split pane
  • backtick + – will create a horizontal split pane
  • Control-x will turn pane sync on to allow input to all panes at the same time
  • Alt-x will turn pane sync off

Cygwin

Update 2 :

If you are using tmux within a cygwin bash shell, you might find the Ctrl-C interrupt doesn’t work if you’ve set your terminal to vt200 like I did in .tmux.conf:

set -g default-terminal vt220

I fixed this by making sure you cygwin shell settings also have vt220 set as the Terminal Type.

Here is my Cygwin ./tmux.conf file. Notice I switched back to using the CTRL-A bind key, rather that backtick used previously.

# Appearance customization
set -g status-bg black
set -g status-fg white
set -g window-status-current-fg green
 
# Custom modifier key
unbind-key C-b
set -g prefix C-a
bind-key C-a send-prefix
 
# Terminal improvements
set -g terminal-overrides "xterm*:XT:smcup@:rmcup@"
set-window-option -g automatic-rename on
set-option -g set-titles on
set -g mouse on
set -g default-terminal xterm-256color
set -g status-keys vi
set -g history-limit 10000
setw -g mode-keys vi
unbind-key -T copy-mode-vi v
bind-key -T copy-mode-vi 'v' send -X begin-selection # Begin selection in copy mode.
bind-key -T copy-mode-vi 'C-v' send -X rectangle-toggle # Begin selection in copy mode.
bind-key -T copy-mode-vi 'y' send -X copy-selection # Yank selection in copy mode.
 
# Start numbering at 1 instead of 0
set -g base-index 1
 
# Clear scrollback buffer
bind l clear-history
 
# Custom key bindings to split the window
bind-key v split-window -h
bind-key s split-window -v
 
# Reload tmux config
bind r source-file ~/.tmux.conf
 
# No delay for escape key press
set -sg escape-time 0
 
# Shift arrow to switch panes
bind -n S-Left  select-pane -L
bind -n S-Right select-pane -R
bind -n S-Up    select-pane -U
bind -n S-Down  select-pane -D
 
# Control arrow to create panes
bind -n C-Down  split-window -v
bind -n C-Up    split-window -v -b
bind -n C-Right split-window -h
bind -n C-Left  split-window -h -b
 
# Easier window navigation
bind -n C-Tab     next-window
bind -n C-S-Tab   previous-window
bind -n C-S-Left  previous-window
bind -n C-S-Right next-window
 
# Ctrl + Alt + Left/Right to move windows
bind-key -n C-M-Left swap-window -t -1
bind-key -n C-M-Right swap-window -t +1
 
# Copy to cygwin clipboard
bind -n C-t run "tmux save-buffer - > /dev/clipboard"
 
# Kill tabs quicker
bind-key x kill-pane
 
# Plugins
run-shell ~/.tmux-plugins/resurrect/resurrect.tmux

 

Pane Resizing

Update 3 :

If you split windows horizontally or vertically, you might want to re-balance the sizes since the first split will half your first window, and the second split will half the second window, leaving window 1 bigger than windows 2 and 3.

You can do this with:

CTRL-A :select-layout even-vertical
or
CTRL-A :select-layout even-horizontal

Or you can toggle through the pre-defined pane layouts using C-a SPACE

Private