unix sudo command example

command, it is more flexible than Su .) I know about sudo. Do you know how to configure sudo? The following is a brief description: configure the sudo configuration file in/etc/ SudoersIn this example, the mongodo command is us

commands as root. Therefore, in the default installation of the Ubuntu system, if you want to execute as the root of the command, as long as the following command to follow the sudo. Here's an example to illustrate that if you want to perform apt-get update, you should type the following on the

-user list or user alias already set. Host_list-a host list or host alias on which the user can run sudo. Effective_user_list-List of users running with this user or alias Tag_list-a list of tags, such as nopasswd. Command_list-a list of commands or command aliases that the user runs with sudo. To allow users (Aaronkilik in the following

1. First edit the configuration file/etc/sudoers, or directly edit the file by running the export do command, 2. the syntax for configuring the/etc/sudoers configuration line is as follows: User MACHINE = COMMANDS User: Authorized user MACHINE: Authorized host address COMMANDS: Authorization command /Etc/sudoers can also be replaced by an alias, The first column "User_Alias, Host_Alias, Cmnd_Alias" is the k

execute destructive commands because you forget to exit (this error is often made by linux beginners ); 2. configure normal users with the permission to use the sudo command: In linux, the new user does not have the sudo permission. for example, if you create an AAA user, enter the

: Configuring sudo configuration file in/etc/sudoers, generally through the Visudo command to safely open the editor.To view the usage of/etc/sudoers, you can use the command: Man 5 sudoers. In the/etc/sudoers file mainly includes these two parts: 1. Alias setting aliases mainly include the following: User_alias,host_alias,runas_alias,cmnd_alias, which are user a

for configuring sudo is in/etc/sudoers. Generally, you can use the mongodo command to safely open and edit the file. Run the following command to view the usage of/etc/sudoers: man 5 sudoers. The/etc/sudoers file contains the following two parts:1. the alias www.2cto.com mainly includes the following types: User_Alias, Host_Alias, Runas_Alias, and Cmnd_Alias: Us

works well, it receives information from the pipeline, and outputs it to the screen while writing to the file.Linux always has some gadgets for us to think about very aptly!3. Elevate Shell permissions. sudo-s//refers to root permissions. Prompt is #when you think it's time to return to normal permissions,sudo su username//return to username permissions, prompt for $CentOS elevation privilege: Su-Ubuntu El

the correctness of the configuration file. On the contrary, if other text editing programs are used, once an error occurs, it will cause serious consequences to the system. The default/etc/sudoers file of Ubuntu is as follows: # User privilege specificationroot ALL = (ALL) ALL # Members of the admin group may gain root privileges % admin ALL = (ALL) ALL The following is a brief description of the above Configuration: The purpose of the first configuration is to allow the root user to use The

sudo is a Linux system Management Directive, a tool that allows a system administrator to allow ordinary users to perform some or all of the root commands, such as HALT,REBOOT,SU, and so on. This will not only reduce the root user login and management time, but also improve security. sudo is not a substitute for the shell, it is oriented to each command. Overvie

default. After installation, the user account password is the same as the root password. However, some system operations on the gnome gui indicate that the password is incorrect. (The first installation, because the password does not use a special symbol, the second addition of the special symbol in the password, it seems that there is a problem. This may be because the root password does not support special characters in terminal mode. This is probably the reason for my analysis) Finally, use

mysql-bin.000013, restarting mariadb problem is resolved.Summarize:Most failures in Linux have log file records, do not panic when encountering problems, first review the problem description, and then through the log file description to solve the problem. Don't blindly search the answers online.[email protected] mysql]$ sudo journalctl-xe----Unit Mariadb.service have begun shutting down.November 18:22:46 CentOS systemd[1]: Stopped MariaDB database se

Sudo Syntax:Sudo [-B] [-u New User Account] Option and parameter:-B: place the subsequent commands in the background for the system to execute them on its own, without affecting the current shell-u: the user who switches, if this option is not specified, the user is the root user. For example, Sudo-u Wang touch/tmp/sudo.txt. (Note: currently, the user can only cr

. $ Sudo ls/root We trust you have got ed the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. [Sudo] password forOracle: # enter the password of a common oracle user Anaconda-ks.cfg install. log install. log. syslog Through the comparison above, we ca

1, Su Command function: The role of SU is to change the identity of other users, except for superuser, you need to type the user's password. How to use: Su [-FMP] [-C command] [-s Shell] [--help] [--version] [-] [USER [ARG]] Parameter description: -F, –fast: Do not need to read the boot file (such as CSH.CSHRC, etc.), only for CSH or tcsh two kinds of shell. -L, –login: After adding this parameter, as if it

have the ability to execute commands with root privileges!Let's look at an example:Nick 192.168.10.0/24= (Root)/usr/sbin/useraddThe above configuration only allows Nick to connect to the host on the 192.168.10.0/24 network segment and execute the useradd command with root privileges.You do not need to enter a password when setting sudoYou always need to enter a password event when you execute the sudo

Reference Blog: http://xvshell.iteye.com/blog/18380931. When the user executes sudo, the Linux system will look for the/etc/sudoers file, and it is active to determine if the user has permission to execute the sudo command2. If the user has the ability to execute sudo, let the user enter their own password to confirm, here is more than the password to use root, p

The administrator can configure the sudo command to allow a common user to execute commands in a different user identity (usually a super user) in a controllable way. Introduction The sudo command is similar to the su command in many aspects, but it also has some important f

Tags: Linux command not foundTypically, a custom path is selected by compiling the installation or binary copy of the software path, taking the Nodejs software as an example, such as:/usr/local/node6.10/bin. Command not found will be prompted at this time when running with the sudo

First, symptoms sudo command execution is slow, for example: sudo-u root ls-l/tmp, running after a very long time to run the results of the instructions Ii. Solutions Generally because there is no corresponding "host name The workaround is as follows: 1 run the hostname comma