Pretty bash output

pretty_output.sh

# Purely cosmetic function to prettify output
# Set OUTPUT_LABEL to change the label
# Supports ERROR, SUCCESS, and WARN as arguments
output() {
  local label=${OUTPUT_LABEL:-$0}
  local timestamp=$(date +%H:%M)
  local colour='\033[34m' # Blue
  local reset='\033[0m'   # Standard
  case $1 in
      ERROR) local colour='\033[31m' ;; # Red
    SUCCESS) local colour='\033[32m' ;; # Green
       WARN) local colour='\033[33m' ;; # Yellow
  esac
  while read line; do
    echo -e "${colour}${label} [${timestamp}]${reset} ${line}"
  done
}