If you are familiar with windows, you will think that it is very easy to execute every operation, but this is not the case after installing Linux. You may think that you have logged on with the user name and password you set in advance after installing Linux, you are the administrator, but you have to enter a password for any operation like a common user. This is a major feature of Linux, with high security.
How can I log on as an administrator? Let's take a look.
◆ Allow Su to root
It is very simple. The following is the setting method: sudo passwd
Password: <--- enter the password of the user during installation
Enter new Unix Password: <--- New Root User Password
Retype new Unix Password: <--- repeat the New Root User Password
Passwd: the password is successfully updated.
◆ Allow root login
To allow root logon (not recommended), perform the following operations: gksu/usr/sbin/gdmsetup.
(Or use the desktop menu: system> System Management> logon window)
Click the "Security" option page and select "Allow local administrator to log on" (but I found that the "Security" option page does not exist in ubuntu10.04lts ).
Note: This step depends on the previous step.
◆ Directly log on without entering the password
Someone complained on the forum that Ubuntu in the House could not be logged on like window $ -- without a password. In fact, the same can be done:
On the "Security" option page in the previous step, select:
"Enable Automatic Logon" and "user" (for example, "me ");
Note: Do not set this for public computers!
◆ Log on to the remote server through SSH
If the remote server only allows the root user to SSH to the server, you must "Su to root" in Ubuntu to log on successfully (depending on the server configuration ).
First, copy the key to the "/root/. Ssh/" directory,
Me @ tipfoo :~ $ Su
Password:
Root @ tipfoo:/home/me # chmod 600-r/root/. Ssh/
Root @ tipfoo:/home/me # ssh-P 27482 11.22.33.44
Enter passphrase for key'/root/. Ssh/id_rsa ':
Last login: Thu Jun 21 14:29:00 2007 from 11.22.33.45