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How do I use format() on a moment.js duration?
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var diff = moment(end).unix() - moment(start).unix();
moment.utc(moment.duration(diff).asMilliseconds()).format("HH:mm:ss.SSS");
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Get current date/time in seconds
...ontrived - but I'll take a shot :) Suppose you have data time stamped with unix time, and want to determine it's age. More though I think this is what is most likely meant by 'the current date/time in seconds'; just my gut feeling.
– sje397
Sep 30 '10 at 12:10
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kill -3 to get java thread dump
I am using kill -3 command to see the JVM's thread dump in unix. But where can I find the output of this kill command? I am lost!!
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How to include jar files with java file and compile in command prompt
...java worked for me. I was using mac. I read somewhere that ':' is used for unix.
– Sri
May 25 '16 at 5:01
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Google Authenticator available as a public service?
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Google Authenticator generates a 6 digit code by from a SHA1-HMAC of the Unix time and the secret (lots more detail on this in the RFC)
The server also knows the secret / unix time to verify the 6-digit code.
I've had a play implementing the algorithm in javascript here: http://blog.tinisles.com...
Emacs in Windows
...ther as a command-line app (which happens to start a GUI). Windows, unlike Unix, distinguishes between these two things.
– Donal Fellows
Aug 24 '11 at 16:31
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Where is Java Installed on Mac OS X?
...cepted answer did not work for me but this worked! (I'm normally not a mac/unix user)
– Roel
Jul 22 '16 at 15:36
@Paŭ...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...实时性的场景，主要用于离线的分析。
基于MapRduce模型编程做数据的分析，开发上效率不高，位于hadoop之上Hive的出现使得数据的分析可以类似编写sql的方式进行，sql经过语法分析、生成执行计划后最终生成MapReduce任务进行执行...
How do I find where JDK is installed on my windows machine?
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If you are using Linux/Unix/Mac OS X:
Try this:
$ which java
Should output the exact location.
After that, you can set JAVA_HOME environment variable yourself.
In my computer (Mac OS X - Snow Leopard):
$ which java
/usr/bin/java
$ ls -l /usr...
Get time in milliseconds using C#
...w.Ticks / TimeSpan.TicksPerMillisecond;
This is actually how the various Unix conversion methods are implemented in the DateTimeOffset class (.NET Framework 4.6+, .NET Standard 1.3+):
long milliseconds = DateTimeOffset.Now.ToUnixTimeMilliseconds();
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