tmux

# Create named session
tmux new-session -s infra
tmux new -s lab -d                       # detached

# List sessions
tmux list-sessions                       # or tmux ls

# Attach
tmux attach -t infra                     # or tmux a -t infra
tmux attach -t infra -d                  # detach others first

# Detach from inside
# prefix + d                             (default prefix: Ctrl-b)

# Kill session
tmux kill-session -t lab
tmux kill-server                         # kill everything

# Windows
# c     create window
# ,     rename window
# n/p   next/previous window
# 0-9   jump to window by number
# w     list windows (interactive)
# &     kill window

# Panes
# %     vertical split
# "     horizontal split
# o     cycle panes
# ;     last active pane
# x     kill pane
# z     toggle pane zoom (fullscreen)
# {/}   swap pane left/right
# Space cycle layouts

# Arrow keys to navigate panes (prefix + arrow)
# Resize: prefix + Ctrl-arrow (or Alt-arrow)

# Resize from command mode (prefix + :)
# resize-pane -D 10                      # down 10 rows
# resize-pane -R 20                      # right 20 cols

# Break pane to own window
# prefix + !

# Join pane from another window
tmux join-pane -s 2 -t 1                 # move window 2's pane to window 1

# Synchronize panes (type in all panes simultaneously)
# prefix + : → setw synchronize-panes on

# Enter copy mode: prefix + [
# Navigate with vi keys (if set -g mode-keys vi)
# Start selection: Space (or v in vi mode)
# Copy: Enter (or y in vi mode)
# Paste: prefix + ]

# Search in copy mode: / or ? (vi mode)

# Increase scrollback
# set -g history-limit 50000

# Set prefix to Ctrl-a (screen-style)
unbind C-b
set -g prefix C-a
bind C-a send-prefix

# Vi mode
set -g mode-keys vi
set -g status-keys vi

# Mouse support
set -g mouse on

# Start windows/panes at 1 (not 0)
set -g base-index 1
setw -g pane-base-index 1

# Reload config
bind r source-file ~/.tmux.conf \; display "Reloaded"

# True color support
set -g default-terminal "tmux-256color"
set -ag terminal-overrides ",xterm-256color:RGB"

# Reduce escape delay (important for Neovim)
set -sg escape-time 10

# Focus events (for Neovim autoread)
set -g focus-events on

# Send keys to a running session
tmux send-keys -t infra:0 "ls -la" Enter

# Capture pane output
tmux capture-pane -t infra:0 -p > /tmp/output.txt

# Run command in new window
tmux new-window -t infra "htop"

# Scripted layout
tmux new-session -d -s dev
tmux send-keys -t dev "nvim" Enter
tmux split-window -h -t dev
tmux send-keys -t dev "git status" Enter
tmux split-window -v -t dev
tmux attach -t dev