TMUX basic config using A instead of B

.tmux.conf

# remap prefix to Control + a
set -g prefix C-a
# bind 'C-a C-a' to type 'C-a'
bind C-a send-prefix
unbind C-b

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

# reload config file
bind r source-file ~/.tmux.conf

# Enable mouse control (clickable windows, panes, resizable panes)
# set -g mouse-select-window on
# set -g mouse-select-pane on
# set -g mouse-resize-pane on

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

set -g default-terminal "screen-256color"

# word separators for automatic word selection
setw -g word-separators ' @"=()[]'
setw -ag word-separators "'"

# Start counting pane and window number at 1
set -g base-index 1
setw -g pane-base-index 1

# Disable automatic renaming
set-option -wg automatic-rename off

# Copy text from tmux
# sudo apt-get install xclip -y
# Use xclip to copy and paste with the system clipboard
bind C-c run "tmux save-buffer - | xclip -i -sel clip"
bind C-v run "tmux set-buffer $(xclip -o -sel clip); tmux paste-buffer"

# Show more line
set-option -g history-limit 5000

# UTF-8 (tmux < 2.2)
set -q -g status-utf8 on
setw -q -g utf8 on

# Move window automatically
set -g renumber-windows on

# Keep current path
bind c new-window -c "#{pane_current_path}"

# TPM
# Installing TPM 
# https://github.com/tmux-plugins/tpm#installation
set -g @plugin 'tmux-plugins/tpm'

######################
### Plugins        ###
######################

set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'dracula/tmux'


run '~/.tmux/plugins/tpm/tpm'

######################
### DESIGN CHANGES ###
######################

# Color:
# https://superuser.com/questions/285381/how-does-the-tmux-color-palette-work

# loud or quiet?
set -g visual-activity off
set -g visual-bell off
set -g visual-silence off
setw -g monitor-activity off
set -g bell-action none

#  modes
setw -g clock-mode-colour colour5
setw -g mode-style 'fg=colour1 bg=colour18 bold'

# panes
set -g pane-border-style 'fg=colour19 bg=colour0'
set -g pane-active-border-style 'bg=colour0 fg=colour9'

# statusbar
set -g status-position bottom
set -g status-justify left
set -g status-style 'bg=colour18 fg=colour137 dim'
set -g status-left ''
set -g status-right '#[fg=colour7,bg=colour19] %d/%m #[fg=colour238,bg=colour8] %H:%M:%S '
set -g status-right-length 50
set -g status-left-length 20

setw -g window-status-current-style 'fg=colour1 bg=colour19 bold'
setw -g window-status-current-format ' #I#[fg=colour249]:#[fg=colour255]#W#[fg=colour249]#F '

setw -g window-status-style 'fg=colour9 bg=colour18'
setw -g window-status-format ' #I#[fg=colour237]:#[fg=colour250]#W#[fg=colour244]#F '

setw -g window-status-bell-style 'fg=colour255 bg=colour1 bold'

# messages
set -g message-style 'fg=colour252 bg=colour16 bold'

######################