Bash colored echo

bash_colors.sh

#!/bin/bash
# if terminal, use colors
if [ -t 1 ]; then
  function tp {
    tput "$@"
  }
# else, no colored output to prevent messing up log files
else
  function tp {
    echo ""
  }
fi

function black    { echo "$(tp setaf 0)$@$(tp sgr0)"; }
function red      { echo "$(tp setaf 1)$@$(tp sgr0)"; }
function green    { echo "$(tp setaf 2)$@$(tp sgr0)"; }
function yellow   { echo "$(tp setaf 3)$@$(tp sgr0)"; }
function blue     { echo "$(tp setaf 4)$@$(tp sgr0)"; }
function magenta  { echo "$(tp setaf 5)$@$(tp sgr0)"; }
function cyan     { echo "$(tp setaf 6)$@$(tp sgr0)"; }
function white    { echo "$(tp setaf 7)$@$(tp sgr0)"; }
function nocolor  { echo "$(tp sgr0 0) $@$(tp sgr0)"; }

function check    { green "$@"; }
function success  { yellow "$@"; }
function error    { red "$@"; }
function info     { white "$@"; }
function text     { nocolor "$@"; }

# example
check Checking Debian version...
if [ ! -f "/etc/debian_version" ]; then
  red This installer requires a Debian based system.
  exit 2
else
  white $(</etc/debian_version)
fi