The First Cry of Atom Today is the first day of the rest of my life.

Equally size pane of tmux

You can split your terminal with tmux. But these pane sizes are not same when you split more than 3 panes. This is not good to see and even might be obstacle for development. You can split equally size panes with only below two lines.

# split -v S
unbind S
## bind S split-window <- this is an original line.
bind S split-window \; select-layout even-vertical

# split vertically
unbind |
## bind | split-window <- this is an original line.
bind | split-window -h \; select-layout even-horizontal

splits

This is easy way!