super user su

Su -- Super User Su or su root: Convert the current identity to root, and the User Shell has not changed. therefore, some system commands cannot be used. su-,

each administrator's technical expertise and scope of management, and a targeted delegation of authority, and agreed on what tools they use to complete their work, then we need to use sudo.With Sudo, we can putSome super permissions are targeted, and do not require ordinary users to know the root password, so sudo relative to the unrestricted permission of Su, is still relatively safe, soSudo can also be r

Linux User management command-useradd passwd usermod chage userdel su instance, useraddusermod User's home directory Common User:/home/user name. Both the owner and the group belong to this user. The permission is 700. Super

In the previous two sections, we introduced the basic knowledge of users and user groups and how to manage users and user groups. Next let's take a look at other user-related commands.Finger tool for viewing user informationChfn tool for changing user informationId: view the

Centos common user su to root prompts error, centosroot1. When a common user in CentOS7 executes SU, the following error is reported: [test@ecs-1453 ~]$ su -Password: su: Authentication failureSolution: If the root

The Linux system provides two user permission management mechanisms: su and sudo. su is mainly used to switch users, while sudo users are used to improve execution permissions. The following describes in detail. I. su command -- switch usersWith the su command, you can switc

Su Command and sudo serviceThe SU command is used to switch the user (switch the lander)Format:su [-] User name[-]: indicates an environment variable that uses a new userUse the [-] function:[Email protected] test1]# echo $PATH #查看root的环境变量　　　　/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin[Ema

1,su Command (su is switch user, which is shorthand for switching users) Format: Su-l USERNAME (-L-Login, abbreviated for landing) If you do not specify username (username), the default is root, so the command to switch to root is: su-root or direct

For Linux users, you can use the su and sudo commands. the use cases of these two commands are different. Su if your current identity is root, you can use the su command to switch to any other user (no password required), as shown below: [root @ lx200 ~] Su-oracle [o For Lin

necessary, execute the "unset tmout" command to cancel the tmout variable setting.2 User Switching and power-up2.1SU Command __ Switch UserWith the SU command, you can switch to the specified other user with all the permissions of that user, and of course, the password for the target

Tags: alt edit sudoer file in Visudo sudo config exit parameterLet's review the previous section: User groups Add Groupadd User Group Modification Groupmod User group Delete Groupdel The job creates a group with ID 501 group1, then changes to Group2, and the ID becomes 502, and finally the group is deleted, with the following commands: G

Su [-FMP] [-C command] [-s shell] [-- help] [-- version] [-] [user [Arg]-C command: the user who changed the account to user, and then executes the command to change it back to the original user.What is the difference between the su command and the

In daily operation in order to avoid some mis-operation, more secure management system, usually use the user identity is ordinary users, not root. When you need to perform some administrator command operation, then switch to the root user to execute.The way a normal user switches to the root user is: