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How to get the time back in the systray? I had it in the middle of the toolbar at the top of classic 11.04 but upgraded to ubuntu 11.10 and it is gone. I have set whitelist to "all" already.

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If you're running Unity, not Gnome Shell, my guess is that indicator-datetime isn't running. Try running /usr/lib/indicator-datetime/indicator-datetime-service from a terminal window. Hopefully that'll fix things. If not, please edit your question to include the exact error message(s) you received.

To launch a terminal, hit Ctrl+Alt+T. You can also type this command to get a list of indicators that are currently running:

ps -ef | grep [i]ndicator
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I did a little cleaning with synaptic (oops) and I lost my clock/calendar and do not how to get it back. I ran /usr/lib/indicator-datetime/indicator-datetime-service but it just came back as: bash: /usr/lib/indicator-datetime/indicator-datetime-service: No such file or directory know what I need to install to get it back? Thanks – Dustin Feb 23 '12 at 23:11
@Dustin: You can find which package is responsible for a file via dpkg --search filename. In this case, ensure that indicator-datetime is installed. – Scott Severance Feb 24 '12 at 21:19
On 14.04 I had to run: "/usr/lib/x86_64-linux-gnu/indicator-datetime/indicator-datetime-service &" – AzaraT Aug 25 '14 at 8:31

To get it back if it is missing or accidentally uninstalled just add it:

sudo apt-get install indicator-datetime 
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In Ubuntu 13.10, run /usr/lib/x86_64-linux-gnu/indicator-datetime-service in terminal can be a solution.

TIPS: Use ps -ef | grep [i]ndicator to find the indicators' location.

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This did it for me:

pkill -f datetime

Edit: Kills the process that displays time. Ubuntu will probably then restart the process.

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Please edit your answer to explain what this command does, and why you believe it to be a solution. – Martin Thornton Dec 16 '15 at 12:18
This answer works for me when my time goes missing from the toolbar. – SlothLordKyle Mar 13 at 20:26

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