记录一下shell日志颜色处理

_COLORS=${BS_COLORS:-$(tput colors 2>/dev/null || echo 0)}__detect_color_support() {    # shellcheck disable=SC2181    if [ $? -eq 0 ] && [ "$_COLORS" -gt 2 ]; then        RC='\033[1;31m'        GC='\033[1;32m'        BC='\033[1;34m'        YC='\033[1;33m'        EC='\033[0m'    else        RC=""        GC=""        BC=""        YC=""        EC=""    fi}__detect_color_supportechoerror() {    printf "${RC} * ERROR${EC}: %s\\n" "$@" 1>&2;}echoinfo() {    printf "${GC} *  INFO${EC}: %s\\n" "$@";}echowarn() {    printf "${YC} *  WARN${EC}: %s\\n" "$@";}