.tmux.conf

#  vim:ts=4:sts=4:sw=4:et
#
#  Author: Hari Sekhon
#  Date: 2015-10-08 12:10:02 +0100 (Thu, 08 Oct 2015)
#
#  https://github.com/HariSekhon/DevOps-Bash-tools
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
#  https://www.linkedin.com/in/HariSekhon
#

# Run 'make tmux' to install TPM before using this config or see git clone at bottom

# ============================================================================ #
#                      T M U X   C o n f i g u r a t i o n
# ============================================================================ #

# Ctrl-b r - reloads .tmux.conf
# remember tmux reuses backend server process which doesn't go down unless you do 'tmux kill-server' (killing tmux server process is an easy reset if you don't want to undo options you've been messing with interactively)
bind r source-file ~/.tmux.conf \; display ".tmux.conf reloaded"

# Ctrl-b b - reloads .bashrc - .bash.d/aliases.sh 'r' enter keystroke is easier to type
#bind b send-keys "source ~/.bashrc" "Enter" \; display ".bashrc reloaded"

# 'tmux attach' starts new session if none exists
# when combined with reloading above, however, causing a new session to be created every time
#new-session
#attach

# ============================================================================ #
# change default meta key from Ctrl-b to Ctrl-a to be more like screen
#
# seemed like a good idea initially until working on various companies servers and your muscle memory is wrong or
# you need to embed screen and tmux sessions (eg. screen on laptop, tmux on remote server) without having to double escape meta keys
#
#unbind C-b
#set -g prefix C-a
#
# sends meta through to other apps eg. screen
#bind C-a send-prefix
#bind a send-prefix

# ============================================================================ #
#                              S t a t u s   B a r
# ============================================================================ #

# based on my screen colour style - might be better to leave tmux looking distinct with it's original block green
# more complex multi-colours now set in window-status-format / window-current-status-format below instead
# need this to stay set to make sure status-separator doesn't revert to bg=green
set -g status-style "bg=black fg=brightgreen"

# ========================================
# window list - setting to red if panes are synchronized
# #I - window index
# #W - window name
setw -g window-status-current-format "#[bg=black fg=red][#{?pane_synchronized,#[bg=brightred fg=white],#[bg=black fg=brightblue]}#I* #W#[bg=black fg=red]]"
setw -g window-status-format         "#{?pane_synchronized,#[bg=brightred fg=white],#[bg=black fg=brightgreen]} #I #W"
setw -g window-status-separator " "

# toggle sending keystrokes to all panes in split - quick way of multi-commanding servers (like cssh back in the day)
bind y set synchronize-panes\; display 'synchronize-panes #{?synchronize-panes,on,off}'

# ========================================
setw -g monitor-activity on
#setw -g window-status-activity-style "bg=black fg=magenta"

# ========================================
# Status Left

set -g status-left "#[bg=black fg=green][ #[fg=magenta]#h #[bg=black fg=green] | #S | "
set -g status-left-length 50

# ========================================
# Status Right
#
# #{battery_percentage} - Mac shows battery percentage at top right so don't need this
# #{online_status} - tmux-plugins/tmux-online-status - causes climbing duplicate status bars at bottom
# #(bash ~/.tmux/plugins/kube.tmux 250 magenta green) - may not have kubernetes, also expensive to re-execute this every 5 secs
# Continuum: #{continuum_status}
set -g status-right "#[bg=black fg=green]| %H:%M %d/%b/%Y ]"
#set -g status-right-length 100

#%if #{TMUX}
#set -g status-bg red
#%endif


# ============================================================================ #
#                                S e t t i n g s
# ============================================================================ #

# set is short for set-option
# -g = global
# -s = server / session
# -u = unsets session to inherit global, or resets global to default with -g
# -o = prevents resetting an already set value
# -a = appends to current value

# show all settings:
#
# tmux show -g

# don't auto-rename windows
# set-option -g allow-rename off

set -g status-justify left # or centre

setw -g alternate-screen on  # default, restore previous contents when exiting interactive app
set -g bell-action none
set -g visual-bell off

# renumber windows when one closes
set -g renumber-windows on

set -g focus-events on

# if this line gives you an 'ambiguous' error, upgrade tmux
set -g mouse on
# disable copy-mode dragging
#unbind -n MouseDrag1Pane
#unbind -Tcopy-mode MouseDrag1Pane

#set -g base-index 1  # start window count from 1 instead of 0
#setw -g pane-base-index 1  # start pane count from 1 instead of 0

# ===============================
# these are set in tmux-sensible
#
#setw -g utf8 on
#set -g status-interval 15  # default: 15 - how often to redraw status and execute tmux plugins
#set -g default-terminal "screen-256color"  # force assuming colors without 'tmux -2' or TERM environment variable
set -g history-limit 100000  # give us even bigger history than tmux-sensible


# ============================================================================ #
#                             K e y b i n d i n g s
# ============================================================================ #

# be more like screen to toggle between last window - no longer used as interferes with portal muscle memory when working on various companies servers
#bind b last-window

#bind-key C-c run-shell "tmux show-buffer | xclip -i"
#bind-key C-v run-shell "tmux set-buffer \\"$(xclip -o)\\"; tmux paste-buffer"

# millis to wait a key after meta - default is 500ms
# set higher for remote servers with latency
# set lower for local sessions for speed / responsiveness
set -s escape-time 1


# use expanded view - default is choose-tree view which lists sessions collapsed
#bind s choose-tree -u

# don't recommend changing these from the defaults if you work on other people's servers as a consultant
#bind | split-window -h
#bind - split-window -v
# retain $PWD when splitting
#bind _ split-window -v -c "#{pane_current_path}"
#bind \ split-window -h -c "#{pane_current_path}"

# ====================================
# shortcuts to higher numbered windows
bind F1 selectw -t:10
bind F2 selectw -t:11
bind F3 selectw -t:12
bind F4 selectw -t:13
bind F5 selectw -t:14
bind F6 selectw -t:15
bind F7 selectw -t:16
bind F8 selectw -t:17
bind F9 selectw -t:18
bind F10 selectw -t:19
bind F11 selectw -t:20
bind F12 selectw -t:21

#toggle between smallest and largest sizes if a window is visible in multiple places
#bind F set -w window-size

# switch panes with Alt-arrow
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


# ============================================================================ #
#                            T M U X   p l u g i n s
# ============================================================================ #

# Ctrl-b I to fetch plugins

set -g @plugin 'tmux-plugins/tmux-sensible'  # options everyone should be ok with
set -g @plugin 'tmux-plugins/tmux-resurrect' # Ctrl-b Ctrl-s to save sessions, Ctrl-b Ctrl-r to restore
set -g @plugin 'tmux-plugins/tmux-continuum'  # needs tmux-resurrect
set -g @plugin 'tmux-plugins/tmux-urlview'
#set -g @plugin 'tmux-plugins/tmux-online-status'  # overkill, just call .bash.d/ functions & aliases when needed
#set -g @plugin 'tmux-plugins/tmux-pain-control'
#set -g @plugin 'tmux-plugins/tmux-battery'  # Mac shows this at top right so don't need these bash scripts

set -g @continuum-save-interval '15'  # default: 15, set to 0 to stop automatic saving
set -g @continuum-restore 'on'  # automatic restore
set -g @continuum-boot 'on'     # auto-start terminal at boot
set -g @continuum-boot-options 'fullscreen'

# if icons don't display properly set this
#set -g @online_icon "ok"
#set -g @offline_icon "offline!"

# ============

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
#
# download TPM like so before launching/reloading tmux:
#
# git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
#
run -b '~/.tmux/plugins/tpm/tpm'