.tmux.conf

# To install:
#
# 1. Install https://github.com/thewtex/tmux-mem-cpu-load/ (optional)
# 2. Need a fresh clone of tmux plugin manager, tpm:
#    git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
# 3. Use M-[ I to install plugins
#
# Useful commands/shortcuts:
# - Use M-[ u to update plugins
# - Use M-: resize-pane -x 105 to resize panes
# - Use M-: select-layout even-horizontal to evenly distribute panes
#   horizontally

# Color terminal
set -g default-terminal "xterm-256color"
set-window-option -g xterm-keys on

# reload ~/.tmux.conf using PREFIX r
bind r source-file ~/.tmux.conf \; display "Reloaded!"

set -g history-limit 10000

# Monitor activity in other windows
setw -g monitor-activity on
set -g visual-activity on

# For pinentry support we need to update the DBUS address
set-option -g update-environment 'DBUS_SESSION_BUS_ADDRESS'

############################################################################
# Status Bar
############################################################################
set -g status-justify centre
# grey status bar with cyan writing
set-option -g status-bg colour235
set-option -g status-fg cyan
set-option -g status-interval 5
set-option -g status-left-length 30
set-option -g status-right-length 140
# [Session Name:Window Index:Pane Index]
set-option -g status-left '#{prefix_highlight}[#[fg=green]#S#[fg=cyan]:\
#[fg=yellow]#I#[fg=cyan]:#[fg=magenta]#P#[fg=cyan]]'

# Use a series of variables to assemble the right side of status line
nils_date="%a %h-%d %H:%M"

# Uses tmux-mem-cpu-load: https://github.com/thewtex/tmux-mem-cpu-load
nils_tmux_mem_cpu_load="#(which tmux-mem-cpu-load)"
%if "#{==:#{nils_tmux_mem_cpu_load},}"
nils_mem=""
%else
nils_mem="#(`which tmux-mem-cpu-load` -c -q -g 0 -t 0 -a 0 -i 3)"
%endif
# grab the temp from lm-sensors
nils_temp="#(sensors | sed 's/Tctl:/Core 0:/' | \
awk -v format=\" T: %2.1fC |\" '/^Core [0-9]+/ {gsub(\"[^0-9.]\", \"\", $3); \
sum+=$3; n+=1} END {printf(format, sum/n)}')"

# If there's nothing remaining in the battery, we probably don't have one :)
%if "#{==:#{battery_remain},}"
nils_batt=""
%else
nils_batt="B:#{battery_icon} #{battery_percentage} #{battery_remain} |"
%endif

set -g status-right "$nils_mem |$nils_temp$nils_batt #H | $nils_date "

# Change name at the bottom of current window to always see what is being run.
setw -g automatic-rename on
# Set the title of the terminal window to the automatic name
set-option -g set-titles on

# Enable navigating
# set -g mouse on

# Use non-Emacs shortcut for sending prefix
# unbind C-b
set -g prefix M-[

# Allow pasting from the system using prefix C-y
bind-key -T prefix C-y run "xsel -o -b | tmux load-buffer - ; tmux paste-buffer"

# Allow copying from inside tmux to the system clipboard
bind-key -T copy-mode C-w send-keys -X copy-pipe-and-cancel "xsel -i --clipboard"
bind-key -T copy-mode M-w send-keys -X copy-pipe-and-cancel "xsel -i --clipboard"

# Plugin manager:
set -g @plugin 'tmux-plugins/tpm'
# set -g @plugin 'tmux-plugins/tmux-sensible'

# Battery status indicator
set -g @plugin 'tmux-plugins/tmux-battery'

# CPU monitoring
set -g @plugin 'tmux-plugins/tmux-cpu'

# copycat plugin
set -g @plugin 'tmux-plugins/tmux-copycat'

# tmux-yank plugin
set -g @plugin 'tmux-plugins/tmux-yank'

# tmux-open, o opens, C-o in $EDITOR
set -g @plugin 'tmux-plugins/tmux-open'

# show if prefix is active in bar
set -g @plugin 'tmux-plugins/tmux-prefix-highlight'

# Show whether we are connected to the internet or not
set -g @plugin 'tmux-plugins/tmux-online-status'

# set only on OS X where it's required
# set -g default-command "reattach-to-user-namespace -l $SHELL"

# auto save and auto restore sessions
# Load the main plugins
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'
# Enable restore last environment on start
set -g @continuum-restore 'on'
# Start tmux on boot
set -g @continuum-boot 'off'
# set -g @continuum-boot-options 'iterm'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.tmux/plugins/tpm/tpm'