How to reset password of account kali on Kali Linux
1. Look for line of "Linux ..." in GRUB menu, change message ro to rw
2. Append "init=/usr/bin/bash" and "system.unit=multi-user.target" at the end of line of "Linux..."
3. Press Ctrl + x to reboot # system will reboot to root mode
4. command "passwd kali" # change kali password (default account kali)
5. command "exec /usr/sbin/init" # go to init for testing
6. reboot kali