//Auto login
sudo nano /etc/inittab
# vor 1:2345:respawn:/sbin/getty 115200 tty1
direkt darunter adden: 1:2345:respawn:/bin/login -f jens tty1 </dev/tty1 >/dev/tty1 2>&1

//Change user
sudo adduser --no-create-home inter
sudo visudo
Add at bottom: inter ALL=(ALL) NOPASSWD: ALL
Log in as inter
sudo usermod --move-home --login jan --home /home/jan pi
sudo groupmod -n jan pi
Log in as other user
sudo visudo
Delete: inter ALL=(ALL) NOPASSWD: ALL
Rename pi to new user
sudo deluser inter
sudo nano /usr/bin/raspi-config
Ctrl+W = Search
2x pi durch neuen user ersetzen: if id -u pi > /dev/null 2>&1; then
1x pi durch neuen user ersetzen: sed /etc/lightdm/lightdm.conf -i -e "s/^#autologin-user=.*/autologin-user=pi/"
1x pi durch neuen user ersetzen: passwd pi
sudo raspi-config
Enable Boot to Desktop/Scratch -> Desktop Log in as user ‘pi’ at the graphical desktop
no reboot needed
sudo raspi-config
Enable Boot to Desktop/Scratch -> Console Text console, requiring login (default)
sudo reboot
http://jankarres.de/2013/09/raspberry-pi-standard-benutzername-pi-aendern/