1. Shell script as follows
current=`date "+%Y-%m-%d %H:%M:%S"`
timeStamp=`date -d "$current" +%s`
#将current转换为时间戳，精确到毫秒
currentTimeStamp=$((timeStamp*1000+`date "+%N"`/1000000))
echo $currentTimeStamp
2. Operation effect
3. Note
this in timestamp way has a small error, the need to obtain precise timestamp refer to: https://blog.csdn.net/AQ931752921/article/details/85071221
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