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How to change username and home directory in Ubuntu

Here I am listing the steps in order to change the username and home directory of a a user in Ubuntu,

Step-1

We need to check that if the username that we are going to change has been used by any of the system processes, if any we have to kill them first,

# killall -u "Present Username"



Step-2

Once we flushed all the running services behalf of the User, we need to execute the below command in order to take effect the changes,

# usermod -l "New Username" "Present Username"

Note: You will get a list of useful functions about usermod by typing $man usermod command

Step - 3

This time we are going to change the group name associated with the user,

#groupmod -n "New Username" "Present Username"

Step - 4

In order to complete these settings we need to change the name of the user home directory,

# usermod -d /home/new -m new where the "new" will be our New Username

Step -5

The below command is used to change the GUI username while we select a particular one,

#usermod -c “New Real Name” new

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