Tmux
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This page is for collecting various snippets and pieces for use with tmux.
Quick cheat sheet of helpful tmux commands
Source: [1]
tmux new- Create and attach to a new session.tmux new -s NAME_HERE- Create and attach to a new session named NAME_HERE.CTRL-b, d- Detach (i.e. exit) from the currently-opened tmux session (alternatively, `tmux detach`). Note, this means press and hold `CTRL`, press `b`, release both, press `d`.tmux ls- Show list of tmux sessions.tmux a- Attach to the previously-opened tmux session.tmux a -t NAME_HERE- Attach to the tmux session named NAME_HERE.CTRL-d- Delete (i.e. kill) currently-opened tmux session (alternatively `tmux kill-session`).CTRL-b, [- Enter copy mode, and enable scrolling in currently-opened tmux session. Press `q` to exit.CTRL-b, "- Split window horizontally (i.e. split and add a pane below).CTRL-b, %- Split window vertically (i.e. split and add a pane to the right).CTRL-b, UpArrow- Move to the pane above (I prefer to rebind this to `CTRL-b, k` to be similar to Vim).CTRL-b, DownArrow- Move to the pane below (I prefer to rebind this to `CTRL-b, j` to be similar to Vim).CTRL-b, LeftArrow- Move to the pane to the left (I prefer to rebind this to `CTRL-b, h` to be similar to Vim).CTRL-b, RightArrow- Move to the pane to the right (I prefer to rebind this to `CTRL-b, l` to be similar to Vim).CTRL-b, z- Toggle maximization of current pane.CTRL-b, ESC, 2- Resize all panes to equal size.CTRL-b, q- Show pane numbers.CTRL-b, x- Kill current pane.CTRL-b, c- Create a new window.CTRL-b, n- Switch to next window.CTRL-b, p- Switch to previous window.CTRL-b, 3- Switch to window 3.CTRL-b, CTRL-b, COMMAND- Send the command to a nested tmux session (repeat prefix for each level of nesting).
Dump live tmux buffer to a file
Source: [1]
CTRL-b,- to enter the command modecapture-pane -S -32768 ; save-buffer FILENAME_HERE- to save at least the last 32,768 lines from the buffer
Configuration file additions
Alt arrow keys
Use Alt-arrow keys without prefix key to switch panes[2]
bind -n M-Left select-pane -L bind -n M-Right select-pane -R bind -n M-Up select-pane -U bind -n M-Down select-pane -D
Shift + arrow keys to switch windows[2]
bind -n S-Left previous-window bind -n S-Right next-window
Zoom window
Zoom Window - Useful for when you need to copy text out of a pane to your local clipboard without selecting text in other panes.[2]
unbind !
bind ! \
new-window -d -n tmux-zoom 'clear && echo TMUX ZOOM && read' \;\
swap-pane -s tmux-zoom.0 \;\
select-window -t tmux-zoom
unbind `
bind ` \
last-window \;\
swap-pane -s tmux-zoom.0 \;\
kill-window -t tmux-zoom
Sync panes
Sync panes (Send input to all panes in the window). When enabled, pane borders become red as an indication.[2]
bind-key y set-window-option synchronize-panes on \;\
set-window-option pane-active-border-style fg=red \;\
set-window-option pane-border-style fg=yellow \;\
display-message "Sync panes ON"
bind-key Y set-window-option synchronize-panes off \;\
set-window-option pane-active-border-style fg=green \;\
set-window-option pane-border-style default \;\
display-message "Sync panes OFF"
Bash Multi Command (works with panes)
Source: [2]
Works with tmux sync panes and spawns a new per argument and then sync them.
Useful for running ssh to multiple machines at same time, or issuing multiple commands at once.
Try it with:
multi ping 127.0.0.{1..10}
or
multi ssh server{1..5}
Configuration snippet:
function multi {
cmd=$1
shift
while $cmd = "ssh" ; do
pre_check="$(echo $@ | tr ' ' '\n' | sed -e 's/^.*@//g' | \
xargs nmap -p 22 -PN -oG - | grep Port | grep -v open)"
test "${pre_check}x" != "x" && (clear; echo "$pre_check") || break
done
tmux send-keys -t 0 "$cmd ${@[1]}"
for ((pane = 1; pane < ${#@[@]}; pane++)); do
tmux splitw -h
tmux send-keys -t $pane "$cmd ${@[pane+1]}"
tmux select-layout tiled > /dev/null
done
tmux set-window-option synchronize-panes on > /dev/null
tmux set-window-option pane-active-border-style fg=red > /dev/null
tmux set-window-option pane-border-style fg=yellow > /dev/null
tmux send-keys Enter
}
Reload tmux configuration
Source: [1]
tmux source-file ~/.tmux.conf