my latest tmux.conf

.tmux.conf

# tmux configuration inspired by screen workflow
# minimal keybindings, vim-style navigation

# Clear all default keybindings first
unbind -a

# Set prefix to Control-a (like screen)
# I also map my caps lock to control
set -g prefix C-a
unbind C-b
bind C-a last-window
bind a send-prefix

# Enable 256 color support
set -g default-terminal "screen-256color"
set -ga terminal-overrides ",xterm-256color:Tc"

# Start windows and panes at 1, not 0
set -g base-index 1
setw -g pane-base-index 1

# Renumber windows when closing
set -g renumber-windows on

# History buffer size (like screen's defscrollback 8192)
set -g history-limit 8192

# No delay for escape key press
set -sg escape-time 0

# Mouse support disabled - keyboard only
set -g mouse off

# Enable terminal title updates
set -g set-titles on
set -g set-titles-string "#{pane_current_path} - #T"

# Vim-style pane navigation
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# Arrow key pane navigation (fallback)
bind Left select-pane -L
bind Down select-pane -D
bind Up select-pane -U
bind Right select-pane -R

# Direct window access with numbers (like screen)
bind 1 select-window -t 1
bind 2 select-window -t 2
bind 3 select-window -t 3
bind 4 select-window -t 4
bind 5 select-window -t 5
bind 6 select-window -t 6
bind 7 select-window -t 7
bind 8 select-window -t 8
bind 9 select-window -t 9
bind 0 select-window -t 10

# Window navigation (vim-style and arrows)
bind -n M-h previous-window
bind -n M-l next-window
bind -n M-Left previous-window
bind -n M-Right next-window

# Window list (like screen's "Control-a ")
bind '"' choose-window

# Split panes with | and -
bind | split-window -h
bind - split-window -v
unbind %

# Reload config
bind r source-file ~/.tmux.conf \; display-message "Config reloaded!"


# Keep essential bindings
bind c new-window
bind d detach-client
bind n next-window
bind p previous-window
bind q kill-pane
bind Q kill-window
bind C-z suspend-client

# Status line configuration
set -g status on
set -g status-interval 1
set -g status-position bottom
set -g status-justify left

# Status line colors (Tokyo Night theme)
set -g status-style bg=colour238,fg=colour147

# Left status: session name
set -g status-left-length 20
set -g status-left '[#S] '

# Right status: pwd, CPU usage, memory, date/time
set -g status-right-length 120
set -g status-right '#{pane_current_path} | #{?#{!=:#T,},#T | ,}CPU:#(top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk "{printf \"%3.0f%%\", 100 - \$1}") MEM:#(free | grep Mem | awk "{printf \"%3.0f%%\", \$3/\$2 * 100.0}") | %Y-%m-%d %H:%M'

# Window status format
setw -g window-status-format ' #I #W '
setw -g window-status-current-format ' #I #W '
setw -g window-status-current-style bg=colour75,fg=colour235,bold
setw -g window-status-style fg=colour146

# Pane border colors
set -g pane-border-style fg=colour238
set -g pane-active-border-style fg=colour75

# Message colors
set -g message-style bg=colour75,fg=colour235

# Copy mode (vim-style)
setw -g mode-keys vi
bind [ copy-mode
bind ] paste-buffer

# Auto-detach like screen
set -g detach-on-destroy off

# Bell/notification settings (like screen's vbell off)
set -g visual-bell off
set -g bell-action none

# Default shell (like screen's defshell)
set -g default-shell /bin/bash