create a stylish bash prompt with powerline-like arrows

arrow-prompt-builder.sh

#!/bin/bash
# Use this script to create a cool bash prompt: paste the output into your .bashrc
# look https://misc.flogisoft.com/bash/tip_colors_and_formatting#colors1 to get a list of available colors for 256-color terminals
# also, if you do not see the '>' character in your terminal, install the powerline fonts
PS1=""
lastbg=-1
function append {
        PS1+="$1"
}
function color {
        append "\[\e[0;38;5;$1;48;5;$2;1m\]"
}
function segment { # fg, bg, text
        if [[ $lastbg -gt 0 ]]; then #do not display > symbol when beginning line
                color $lastbg $2 #display '>' symbol with its last background as foreground so it appears on top of the new backgroud
                append ""
        fi
        color $1 $2
        append "$3"
        lastbg=$2

}

#segment #FG BG TEXT
segment 226 17 " \u "        #segment 46 17 "\u "
segment 255 6 ' @ '
segment 16 29 " \[\e[38;5;214m\]host\[\e[38;5;16m\].domain.tld"      #segment 16 29 "\[\e[38;5;82m\]vps\[\e[38;5;16m\].ribes.ovh"
segment 252 240 " \w "
segment 0 0 " " #display a trailing '>'
append "\[\e[0m\]" #reset the prompt at the end of line


#echo $PS1 > ps1
echo "PS1='$PS1'"
echo "paste the preceding line in your .bashrc (you might want to setup a if statement because this works only in xterm-256color terminals"
echo
echo "here is a preview of the colors"
printf "$PS1"
echo