Shulou(Shulou.com)06/01 Report--

Through grub, the user can enter the single-user mode and change the root password, so in order to ensure the security of the system, set the password for grub.

1. Plaintext encryption

Vim / etc/grub.con

Add under hiddenmenu

Password= password

Save exit

Restart the virtual machine, press any key to enter grub, press p to enter the password

2. Encryption of ciphertext

1. Md5 encryption

First generate the ciphertext corresponding to the password

Grub-md5-crypt

After the ciphertext is generated, add it to the same location in the configuration file

Password-md5 ciphertext

2. Sha encryption

Add in the same location

Password-encrypted ciphertext

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.