What is the command to update time and date from internet

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To have the correct time and date in Linux is very important, a lot of things depends on it. It does not matter if you are using Linux to power your personal computer or you have a Linux server. The server and system clock needs to be on time.

Set date from the command line

date +%Y%m%d -s "20120418"

Set time from the command line

date +%T -s "11:14:00"

Set time and date from the command line

date -s "19 APR 2012 11:14:00"

Linux check date from command line


Will show you something like this:

Thu Apr 19 15:17:34 BOT 2012

Set hardware clock

The hardware clock is the clock that runs in you PC hardware even if you disconnect it from the main power supply. This is because it has a lithium battery in the modern computers and another type of battery in the old ones.

We'll see differences between hardware clock and system clock

hwclock --show

Will output something like this:

Thu 19 Apr 2012 03:23:05 PM BOT...
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The TI-84 Plus and TI-84 Plus SE, which have a built-in hardware clock, introduce several commands for dealing with time. Some of these rely on the built-in clock, while others are used for formatting times and dates and could technically have been introduced on earlier calculators. However, the only time/date command that is available on the pre-84 calculators is dbd(.

All of these commands except dbd( can be found only through the command catalog (2nd CATALOG). dbd( can also be found in the Finance menu — 2nd FINANCE on the TI-83, and APPS 1:Finance… on the TI-83+ or higher.

Despite its name, the Time command has nothing to do with the clock. It is a mode setting for sequence graphs.

Low-Level Commands

startTmr — This command returns the current value of a timer that is updated every second when the clock is enabled. This value doesn't correspond to any actual time, but can be used with checkTmr( to get a time difference. checkTmr( — checkTmr(X) is...
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1. Configure the windows time service to update the time more frequently.

Control Panel -> Date and Time -> Internet Time tab.

Check the box "Synchronise with an internet time server" If no server is selected choose either "time.windows.com" or "pool.ntp.org".

This will automatically set the time once per week, which should keep your computer within a few seconds of the correct time. If you are running an important server you may need to set it more often. To do that you need to edit the registry.

Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\ NtpClient, and check the the value SpecialPollInterval. This is in seconds.

The default is 604800, which is the number of seconds in a week. For daily time checks, choose 86400. Unless you have very special requirements you won't need more than daily. Four hours would be every 14400.

2: Configure the system to force-update the time on boot.

To do a...

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It seems there is a bit of ambiguity out there regarding the relationship between w32time and the NET TIME command. Well, here are the answers, straight from the horse's mouth.

Taking it from the top

As all of you know (or at least should) know by now, w32time is the Windows Time Service, which is an independent service that runs on nearly all Windows computers from Windows 2000 onward. It is comprised of the time service (aka w32time) and the w32tm.exe user-mode application for management and troubleshooting. The service communicates on port 123 via UDP for time synchronization using the NTP protocol. Communication between w32tm.exe and the time service uses a custom RPC interface.

In contrast, NET TIME (or more appropriately, the net.exe application) is a user-mode tool for verifying the time on a remote computer using a totally separate mechanism. The net.exe application lives in the System32 directory and is a jack-of-all-trades tool for changing various...

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By default Windows 10/8/7 syncs your system time with Internet servers on a weekly basis. If you want to manually sync and update your system time with an Internet Time server like time.windows,com, you have to right-click on the Time in the taskbar > Adjust Time & date > Internet Time tab > Change settings > Update now.

Change Windows Internet Time Update Interval

But what if you want to sync your time automatically, with the servers more frequently – like say daily? You may have your reasons for wanting to change this to daily – or even on a monthly basis! Let us see how you can do it. Before we proceed, let’s learn a few things about how Time synchronization works on Windows.

Windows Time Service – W32Time.exe

The Windows Time Service or W32Time.exe maintains date and time synchronization on all clients and servers in the network. If this service is stopped, date and time synchronization will be unavailable. If this service is disabled, any...

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Related YoLinux Configuration and Admin Tutorials:

Monitoring the system:

Basic command line:

Also see ntpstat, smbstatus, ifstat, prtstat, pidstat, lpstat, mailstat, sar, cifsiostat, ...


List of tools:

Process Management:

Processes execute within their own process environment, they have their own memory, current working directory, priority, process ID, parent process ID and the file access privileges of the user ID under which they execute.

The basic Linux monitoring commands such as pstree and ps -auxw and top will inform you of the processes running on your system. Sometimes a process must be terminated. To terminate a process:

Identify the process: pstree -p
OR ps -auxw
OR top Kill the process: kill killall

This will perform an orderly shutdown of the process....

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Here is an interesting one. I found a way to take the %date% environment variable, and turn it into a valid string for a filename – without any extra programs or scripts.

For the longest time I used a little utility I created to do this. The problem with that is the utility needs to be around if you want to send the batch file to someone.

What I didn’t know that was that you can use this character combination ‘:~’ to pull a substring out of an environment variable. That is when I realized you could use this to pull out parts of the current date (or time).

Here is how it works. Lets take the %date% variable and print it out

echo %date%

It comes back …At least...

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