How to change the root password and retrieve the password in Linux

In Linux, modify the root password and retrieve the password as a root user. run the following command: # passwd user name (change password) # useradd user name (add user): [root @ bogon ~] # PasswdrootChangingpasswordf...
In Linux, modify the root password and retrieve the password as a root user. run the following command: # passwd user name (change password) # useradd user name (add user): [root @ bogon ~] # Passwd root Changing password for user root. new UNIX password: www.2cto.com bad password: it is based on a dictionary word Retype new UNIX password: passwd: all authentication tokens updated successfully. how to retrieve the root password in liux ============================================ ========================================================== = linux root has the highest power, once the root password is forgotten or stolen, it is a headache. how can I retrieve the root password? I will summarize it as follows: (1) Linux system password cracking 1. press e in the grub option menu to enter the editing mode. 2. edit the line/init 1 (or/single) of the kernel 3. press B to restart 4. run the following command: root @ # passwd root (configure the root password) Enter new unix password: enter the new password root @ # init 6 ================================ ========================================================== ===== (2) debian linux system password cracking 1. in the grub option menu 'debian GNU/Linux ,... (recovery mode) ', press e to enter the editing mode 2. edit the ro single line of the kernel to rw single init =/bin/bash, and press B to restart 3. run the following command: www.2cto.com root @ (none) # mount-a root @ (none) # passwd root @ (none) # reboot ============================================ =============================================================== (three) freebsd system password cracking 1. boot into the boot menu 2. select each item (press 4) to enter the single-user mode. 3. enter the command root @ # mount-a root @ # fsck-y root @ # passwd (change password command)