Sample Defines for adding colours to the bash shell as used in my lectures

bash colours

# more colours here http://misc.flogisoft.com/bash/tip_colors_and_formatting
# Add this to your .bashrc and use in the PS2 prompt 
RED='\e[31m'
GREEN='\e[32m'
DEFAULT='\e[39m'
BLACK='\e[30m'
YELLOW='\e[33m'
BLUE='\e[34m'
MAGENTA='\e[35'
CYAN='\e[36m'
export PS1=$CYAN'[\u@\h]\W$'$DEFAULT