unix sudo

Su and sudo, su root and Su-root differencesSu is the front two letters of the superuser.Su Root=suLike your open an interactive shell in Root name,Then only. BASHRC'll be sourced.Su Root and Su: to establish a link with root, execute the command through root, is actually the process's valid user ID into the Root,unix check process is the right to verify the valid user ID, the actual user ID of the process

Install and configure sudo in CentOS 7 Sudo is usually referred to as super do or suitable user do. It is a software that uses the security permissions of other users to execute programs in UNIX-like operating systems. Let's see how to configure sudo.# Mongodo This will open/etc/sudoers and edit it. Sudoers file

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 switch to another user to have all the permissions of the user. Of course, the password of the target user needs to be verified during the s

secure it is. in this case, the second method is required. 2. sudo In contrast to su, switching identities requires the user's password, and often requires the root password. sudo only needs its own password to execute commands as other users, commands are often executed as root, and not everyone can use sudo: Here I want to view the first three lines of the/et

Http://tool.chinaz.com/Tools/unixtime.aspx now the Unix timestamp (Unix timestamp) is1440732364Unix Timestamp (Unix timestamp) → Beijing Time →unix timestamp (Unix timestamp) How do I get the current UNIX timestamp (

for a password,2. Enable the Sudoers profile using alias modeVim/etc/sudoersUser_alias useradmin = hadoop,%hadoop,%useradmin #表示hadoop用户, Hadoop Group, useradmin GroupCmnd_alias useradmincmnd =/usr/sbin/useradd,/usr/sbin/usermod,/user/bin/passwd [A-Za-z]*,! /USR/BIN/PASSWD root #命令别名, which means that useradd usermod/user/bin/passwd can be executed via sudo [a-za-z]* means that the Execute passwd command must be followed by at least one letter! /USR/

For operational personnel, there is an important command--sudo in the Linux system. You might have guessed already, it literally means "super user can do it." "(Super User do.) To say that Sudo is a command for everything in Linux. I believe many Linux users have had this experience: in the terminal to try to run a command, the result is encountered "Access Denied" t_t ... So, most of the time,

JS gets the Unix time stamp The Unix timestamp (Unix timestamp), or Unix time (Unix times), POSIX time (POSIX times), is a time representation, defined as the total number of seconds from GMT January 01, 1970 00:00 00 seconds to the present.

sudo is a Linux system Management Directive, a tool that allows the system administrator to let ordinary users perform some or all of the root commands, such as HALT,REBOOT,SU, and so on. This not only reduces the login and administration time of the root user, but also improves security. sudo is not a substitute for the shell, it is for each command.sudo configuration file/etc/sudoers, which is in the foll

I. Introduction to sudo: 1. concept: Sudo is a common tool in linux that allows common users to use superuser permissions. It allows system administrators to execute some or all of the root commands, such as halt, reboot, and su. This not only reduces the login and management time of the root user, but also improves the security. Sudo is not a substitute for she

Differences between linux su and sudo commands: linuxsusudo commandsI. Use the su command to temporarily switch user identities1. Conditions and power of su The su command is a tool for switching users. How can this problem be solved? For example, if we log on as a normal user beinan, but want to add a user task and execute useradd, The beinan user does not have this permission, and this permission is exactly owned by the root user. There are two solu

Deep understanding of the difference between Sudo and SuThe maximum difference between the two commands is:The sudo command needs to enter the current user's password, and the SU command needs to enter the root user's password. Another difference is its default behavior. The sudo command only allows a single command to run with elevated privileges, while the SU c

Sudo usage and sudoers configuration in linux, sudosudoers From: http://zxf261.blog.51cto.com/701797/748756 Sudo is a common tool in linux that allows common users to use superuser permissions. It allows system administrators to execute some or all of the root commands, such as halt, reboot, and su. This not only reduces the login and management time of the root user, but also improves the security.

Reprinted: http://hi.baidu.com/it_master/blog/item/07b1ac390f7c793ab9998f41.html Method 1: Add a sudo user When you install Ubuntu, it automatically adds the first user to The sudo group, allowing this user to obtain the root identity by entering his/her own account password. However, the system will not automatically add other users to The sudo group. If

Differences between Linux su and sudo commandsI. Use the su command to temporarily switch user identities 1. Conditions and power of su The su command is a tool for switching users. How can this problem be solved? For example, if we log on as a normal user beinan, but want to add a user task and execute useradd, The beinan user does not have this permission, and this permission is exactly owned by the root user. There are two solutions. One is to log

Introduced 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 not only reduces the time to log in and manage the root user, but also improves security. sudo is not a substitute for the shell, it is oriented to each command. s