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I tried to change my username using command:

sudo usermod -l newusername oldusername

so when I entered it in terminal it showed me:

user 'myusername' is currently used by the process 2553

What does it mean?

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IMO you should change user names in recovery mode, the error message you got I am guessing is because you are logged in. –  bodhi.zazen Jun 26 '13 at 21:24
    
@bodhi.zazen That's an answer! :) –  gertvdijk Jun 26 '13 at 22:24
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marked as duplicate by bodhi.zazen, Alvar, Radu Rădeanu, Eric Carvalho, Stephen Myall Jun 27 '13 at 16:00

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

1 Answer

You need to change user names in recovery mode, the error message you got I am guessing is because you are logged in and running processes as the user you want to change.

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can u please tell me the steps for changing username in recovery mode? –  user170525 Jun 27 '13 at 17:13
    
The commands are as given in the link listed with the closure note. askubuntu.com/questions/310219/changing-name-in-this-os –  bodhi.zazen Jun 27 '13 at 17:31
    
i tried but it still shows:- user 'myusername' is currently used by process 2580. –  user170525 Jun 27 '13 at 18:30
    
no i tried it in terminal. –  user170525 Jun 27 '13 at 18:36
    
run those commands in recovery mode. –  bodhi.zazen Jun 27 '13 at 19:04
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