How do I rename a user name from ‘tom’ to ‘jerry’ under Ubuntu Linux?
You need to use the usermod command. It can modify the system account files (such as /etc/passwd) to reflect the changes that are specified on the command line. The syntax is as follows:
usermod -l {new-login-name} {current-old-login-name}
In this example, rename login id from tom to jerry. Open a command-line terminal (select Applications > Accessories > Terminal), and then type the following command
$ sudo usermod -l jerry tom
To verify new changes, enter:
$ id jerry
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Correct me if I am wrong though, but this does not change the user’s home directory to match the new ID, right?
Try the -m and -d /home/jerry option; the contents of the current home directory will be moved to the new home directory, which is created if it does not already exist:
You may have to take care of secondary group memberhsip too.
Exactly. Be worth updating your original FAQ, no so that the user transformation is complete.