linux change username
# login as root and make sure that there are no active processes for user
usermod -l NEW_USERNAME OLD_USERNAME
# if user is running kill user w the following command
userUID=$(id -u OLD_USERNAME) && pkill -U $userUIDlinux change username
# login as root and make sure that there are no active processes for user
usermod -l NEW_USERNAME OLD_USERNAME
# if user is running kill user w the following command
userUID=$(id -u OLD_USERNAME) && pkill -U $userUIDlinux change prompt to current user
# environment variable PS1 to customize prompt
# \u current user
export PS1="\u : "
#example
username:Copyright © 2021 Codeinu
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