Change the root password in centos single-user mode [reprint]
Reprinted from: centos single-user mode: modifying the root password and grub Encryption
When the Linux system is in normal state, after the server host is started (or
Tags: term win switch LAN ALT note has a server serverIn CentOS7, there is a single-user mode, similar to the security mode under Windows. If we forget the root password, we can reset it in single-user mode.Note: This operation mu
One, single user modeUsage scenario: Forget password, but can't reload the system, this is used in single-user mode.Operation Steps:1, restart the computer, enter the following interface2, press E to enter the next screen3, pull this page down, modify and add the following statementRW init=/sysroot/bin/sh4, modify into
Mac OS X: single user mode operations and Security Vulnerabilities
Update:
: After "1: Check and repair the disk", the following judgment is added: Check whether the disk is normal and wrong, and how to deal with errors.
Introduction:This document describes the entry and use of the single-
CentOS Single User mode: Modify root password and GRUB encryption Centoslinux Network application configuration Management application ServerWhen the Linux system is in a normal state, the server host (or reboot) will be able to boot the Linux system to multi-user mode autom
in single-user mode. Allows updates to the system catalog.2007-03-08 18:22:03.56 spid3 Start the database "master".2007-03-08 18:22:04.38 spid3 0 transactions are rolled back in the database "master" (1).2007-03-08 18:22:04.38 SPID3 Recovery operation is performing checkpoint operations on database ' master ' (1).2007-03-08 18:22:04.51 Server is using the Ssnetl
1. Restart the systemIn the Virtual Machine Boot D window, press ENTER in 3S650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/89/1D/wKioL1gIZtyxryylAABS7UCR-MM704.png "title=" 1.png " alt= "Wkiol1giztyxryylaabs7ucr-mm704.png"/>2, enter e into the editing mode, the upper and lower keys to move to the 2nd line kernel this line650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/89/1F/wKiom1gIZ4nTsvqoAACise7GnqA678.png "title=" QQ picture
Original address: http://www.2cto.com/os/201504/395229.html
Environment: Redhat 6.4
oracle11g RAC
You need to shut down the operating system's firewall and SELinux before installing oracle11g.
1. Shut down firewall: iptables-f ———————————— Clear Firewall Policy
Service iptables stop ——————— shut down the Firewall service
Chkconfig iptables off —————— Disable Firewall service from booting
2. Turn off SELinux
The value of the "SELinux" parameter in the confi
Restart the system, press the ESC key, enter the screen, press E on the keyboard to enter the editor.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/83/67/wKioL1dyaxnBIQ4xAAAqazCyN8M960.png "title=" 1.png " alt= "Wkiol1dyaxnbiq4xaaaqazcyn8m960.png"/>After entering this screen, through the keyboard's upper and lower arrow keys to select kernel that line, and then press E to enter the editor.650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/83/68/wKiom1dya1KBm2lVAAA14rH_PXI655.
After learning the CentOS system for a long time, we have learned more about it. Here, we mainly learn how to enable (or restart) The server host when the CentOS system is in a normal state, the system pilot program can automatically boot the Linux system to multi-user mode and provide normal network services. If the system administrator needs to perform system maintenance or a startup exception occurs, the
Forget the Linux password what to do? We can reset the root password using Single-user mode.
However, using Single-user mode has the premise that the system boot (GRUB) works properly, otherwise the repair
The knowledge that Linux enters Single-user mode (single) is a must for administrators because Single-user mode is a way to modify the system configuration or implement maintenance with
One premise of using the single-user mode is that your system Boot Tool (grub) works normally. Otherwise, you must use the repair mode for system maintenance.
Note: In single-user mode
The original single-user mode is actually very similar, but it is actually a Windows system security mode. The Linux system administrator can use the single-user mode to enter the syste
How to modify the Ubuntu root password and prevent others from using the single-user mode to change the password after Linux is installed, there will be a Ubuntu root user. So how can I change the password of the Ubuntu root user without knowing the password? In this system,
Hello everyone, if you have not used a password to protect the single-user mode, this poses a great risk to your Linux server. Therefore, when it comes to security, it is very important to use a password to protect the single-user mode
Linux's interesting single-user mode analysis-Linux general technology-Linux programming and kernel information. The following is a detailed description. Single User Mode
If run-level is equal to 1, it will enter the
Mount in single-user mode
Mount-o remount in single-user mode, rw/has a major purpose
When the Linux system cannot be started, we usually need to modify some configuration files or adjust some parameters in
Password-protected single-user mode on RHEL/CentOS/5.x/6.x
Hello everyone, if you have not used a password to protect the single-user mode, this poses a great risk to your Linux server. Therefore, when it comes to security, it is
Tags: password login root next share picture passwd command. com through features encounteredThe role of single-user modeIn the Linux system, maintenance personnel often encounter a problem, that is, in the user who has root account permissions and passwords, will always appear to forget the root password situation.In this case, in general, the maintenance staff
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