tmux HOWTO long history, mouse scroll, focus pane on click, preload windows and panes on start

.tmux.conf

# -------------------------------------------------------------------------------------
# This config will set up tmux default startup screens.
# 
# Filename ~/.tmux.conf 
#
# You should uncomment and change following items to fit your needs:
#   - session name
#   - window names (monitoring, nodejs, django, root console)
#   - design number and sizes of split screens (run project, watch files, tail files, etc.)
#   - preexecuted commands (grunt, gulp, management commands, htop, iftop, watch, tree, etc.)
#   
# Originally was designed to preset views in Vagrant Virtual box when debugging
# and developping on local machine.
#
# Author
# (c) Vasek Chalupnicek - MIT licence
# -------------------------------------------------------------------------------------


################# GENERIC config ###################

# enable mouse - since 2.1 (18 October 2015)
#set -g mouse on

# legacy mouse for version < 2.1
## enable mouse scroll - since 2.1 (18 October 2015)
#set -g mode-mouse on
## enable mouse pick pane
#set -g mouse-select-pane on

# set long history
set -g history-limit 30000

# start numbering at 1
set -g base-index 1


################  WINDOW 1  ##################

# # basic term
# new  -s "noname-session" -n "window 1" "bash"

# # split horizontally 60%, change directory to /tmp -> print content -> show some arbitrary help text -> show prompt
# splitw -h -p 60 -t 0 "cd /tmp && bash -c 'ls -la --color && echo -e \"some helptext\"' ; bash"

# # split vertically 80% and start top, when closed jump to terminal
# splitw -v -p 80 -t 1 "top ; bash"


################  WINDOW 2  ##################

# # command is `neww`, the rest is the same as in WINDOW 1
# neww -n "window 2" "bash"

# ...