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This article is to share with you about the super administrator root user password in the Linux system to forget how to solve, the editor feels very practical, so share with you to learn, I hope you can get something after reading this article, say no more, follow the editor to have a look.

1. If it is a production line server, we need to apply for a shutdown window to restart the server. The moment the server turns on the power and enters the system bios power-on self-test, we must quickly press the up and down keys of the keyboard to enter the following interface.

2. At this time, we press the "E" key of the keyboard to enter the system boot boot editing interface. We use the keyboard up and down keys to select the kernel kernel line, as shown in the following figure:

3. After selecting the kernel kernel line, we press the "E" key again according to the prompt below. After entering the editing interface, enter "1" or "single" in the space behind quiet to tell the system that I want to enter single-user mode, as shown in the following figure:

4. After entering "1", we press the enter key of the keyboard, and then press the "b" key of the keyboard to enter single-user mode, as shown in the following figure:

5. After entering the single-user mode, we can execute the command to change the root password. You can enter the command directly: passwd or enter passwd root to change the password, as shown below:

6. The last step is to restart the system by reboot. Is it very simple? next, let's see how to change the root password under Centos7.

3. Modify root password under Centos7 (same as Redhat7)

1. As above, restart the system first, press and hold the up and down keys of the keyboard to enter the system configuration boot interface, as shown in the following figure:

2. Select the first line by default, and then press the "e" key of the keyboard to enter the editing interface, as shown in the following figure:

3. In the editing interface, we find the line linux16, find "ro", and replace "ro" with "rw init=/sysroot/bin/sh", as shown in the following figure:

4. After modification, we press the keyboard "Ctrl + x" key to enter single-user mode, as shown in the following figure:

5. Then we enter the command "chroot / sysroot" to access the system, and then enter passwd root to change the password. After the modification, we enter the command "reboot" to restart the system and use the new password to log in to the system! As shown in the following figure:

The above is the super administrator root user password in the Linux system forgot how to solve, the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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