Some problems encountered when learning Linux

Some problems encountered when learning Linux 1. how to enter the Linux command terminal (1) press ctrl + alt + t (2) press ctrl + alt + (F1-F6 can be), press ctrl + alt + F7 to Exit 2. press ctrl + alt + (F1-F6) to enter the command terminal, enter the correct user name and password at login still reported if the password is... some problems encountered when learning Linux 1. how to enter the Linux command terminal (1) press ctrl + alt + t (2) press ctrl + alt + (F1-F6 can be), press ctrl + alt + F7 to Exit 2. press ctrl + alt + (F1-F6) to enter the command terminal, enter the correct user name and password at login still reported error if the password has a number, it is best to use the main keyboard input, an error may occur when using a numeric keypad (this is the case for me, and the numbers in the password can be entered on the primary keyboard) 3. linux settings root user: XXXXX @ XXXXX-H24X :~ /Desktop $ sudo passwd root [sudo] password for XXXXX: # enter the current user password and enter the new UNIX password: # enter the root password and re-enter the new UNIX password: # confirm the root password passwd: The password has been successfully updated XXXXX @ XXXXX-H24X :~ /Desktop $ su-root password: XXXXX @ XXXXX-H24X :~ #