Some of the Linux operations

In the terminal input Cat/etc/issue view Ubuntu half a pound
When you do not know the password for Ubuntu privileged user root:
Ubuntu is not enabled by default for root users, so this is not familiar to Linux command users in the file system management is not very convenient, such as to paste something in the main directory, new files, of course, the command is very simple, but there are exceptions, This requires the root user to be enabled for visual management, first to establish the root user
sudo passwd
Password: <---Enter the password for the user at the time of installation (never skip when creating a new user)
Enter New UNIX Password: <---The new root user password
Retype new UNIX Password: <---Repeat the root user password
passwd: The password was successfully updated.

Some of the Linux operations