tmux

.tmux.conf

# Remap prefix from 'Ctrl + B' to 'Ctrl + A'
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# Split panes using | and -
bind | split-window -h
bind - split-window -v
unbind '"'
unbind %

# Switch panes using Alt-arrow without prefix
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

# Enable mouse mode (tmux 2.1 and above)
set -g mouse on

# Enable names for panes
set -g pane-border-status top