Colours

Owned by Daniel Stonier
Apr 18, 2017
1 min read

About

How to support colours in a bash script

Ascii Codes
BOLD="\e[1m"
CYAN="\e[36m"
GREEN="\e[32m"
RED="\e[31m"
YELLOW="\e[33m"
RESET="\e[0m"
echo -e "${RED} ERROR : we're foobar${RESET}"


Check for TTY
# check if stdout is a terminal...
if test -t 1; then

    # see if it supports colors...
    ncolors=$(tput colors)

    if test -n "$ncolors" && test $ncolors -ge 8; then
        BOLD="$(tput bold)"
        UNDERLINE="$(tput smul)"
        STANDOUT="$(tput smso)"
        RESET="$(tput sgr0)"
        BLACK="$(tput setaf 0)"
        RED="$(tput setaf 1)"
        GREEN="$(tput setaf 2)"
        YELLOW="$(tput setaf 3)"
        BLUE="$(tput setaf 4)"
        MAGENTA="$(tput setaf 5)"
        CYAN="$(tput setaf 6)"
        WHITE="$(tput setaf 7)"
    fi
fi
echo -e "${RED} ERROR : we're foobar${RESET}"