Rotating PS1 colors, place in .bashrc.

rotating_PS1_colors.sh

declare -a promptarr=("e" "m" "i" "l" "y" "@" "e" "m" "i" "l" "y" "h" "e" "r" "b" "e" "r" "t")
declare -a colorsarr=("\[\033[0;31m\]" "\[\033[0;33m\]" "\[\033[0;32m\]" "\[\033[0;34m\]" "\[\033[0;35m\]" "\[\033[0;36m\]")

coloroffset=0
promptarrlen=${#promptarr[@]}
colorsarrlen=${#colorsarr[@]}

set_prompt() {
  promptstr=""
  colorcount=0

  for (( i=0; i<${promptarrlen}; i++ )); 
  do  
    colorindex=$(( $colorcount+$coloroffset ));
    colorindex=$(( $colorindex%${colorsarrlen} ));
    promptstr+=${colorsarr[$colorindex]};
    promptstr+=${promptarr[$i]}
    colorcount=$(( $colorcount+1 ));
  done

  if (( $coloroffset < $(( $(( ${colorsarrlen}-1))*-1)) )); then
    coloroffset=-1
  else
    coloroffset=$(( $coloroffset-1 ))
  fi  

  promptstr+="\[\033[0;37m\]: \W$ "

  PS1=$promptstr
}

PROMPT_COMMAND=set_prompt

i use dis erry day