bash脚本函数添加时间戳

log_msg()
{       
        #time=`date +"%Y-%m-%d %H:%M:%S"`
        #time=`date +%Y-%m-%d' '%H:%M:%S.%N | cut -b 1-23` #打印毫秒
        time=`date +"%F %T"`
        echo "$time [LOG] $1$2"
}
err_msg()
{       
        #time=`date +"%Y-%m-%d %H:%M:%S"`
        #time=`date +%Y-%m-%d' '%H:%M:%S.%N | cut -b 1-23` #打印毫秒
        time=`date +"%F %T"`
	echo -e "\033[5;41;33m $time [ERROR] $1$2 \033[0m"
}

a="qqq"
log_msg "$a step1 success" >1.txt
sleep 1
log_msg "step2 success"
sleep 2
log_msg "step3 success"
exit 0

https://www.cnblogs.com/kimbo/p/6816566.html 输出颜色