How to change the output color of echo in Linux

Question

I am trying to print a text in the terminal using echo command.

I want to print the text in a red color. How can I do that?

Answer 1

I instead of hard coding escape codes that are specific to your current terminal, you should use tput.

This is my favorite demo script:

#!/bin/bash

tput init

end=$(( $(tput colors)-1 ))
w=8
for c in $(seq 0 $end); do
    eval "$(printf "tput setaf %3s   " "$c")"; echo -n "$_"
    [[ $c -ge $(( w*2 )) ]] && offset=2 || offset=0
    [[ $(((c+offset) % (w-offset))) -eq $(((w-offset)-1)) ]] && echo
done

tput init