Sometimes we feel there is a need to change our username on the GNU/Linux for many different reason. It may be easy or difficult depending on your approach.
The easy way out is to boot into recovery as a 'admin priviledged' user and use 'usermod' and 'groupmod' command:
1) usermod -l newusername oldusername
2) groupmod -n newusername oldusername
3) usermod -d /home/newusername -m newusername
The difficult way (or rather more tedious approach) is to use 'vipw' command:
1) vipw -p (replace "oldusername" with "newusername" and "/home/oldusername" with "/home/newusername")
2) vipw -s (replace "oldusername" with "newusername")
3) vigr -g (replace all entries "oldusername" with "newusername")
4) vigr -s (replace all entries "oldusername" with "newusername")
The easy way out is to boot into recovery as a 'admin priviledged' user and use 'usermod' and 'groupmod' command:
1) usermod -l newusername oldusername
2) groupmod -n newusername oldusername
3) usermod -d /home/newusername -m newusername
The difficult way (or rather more tedious approach) is to use 'vipw' command:
1) vipw -p (replace "oldusername" with "newusername" and "/home/oldusername" with "/home/newusername")
2) vipw -s (replace "oldusername" with "newusername")
3) vigr -g (replace all entries "oldusername" with "newusername")
4) vigr -s (replace all entries "oldusername" with "newusername")
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