Linux each version root local password crack

A Redhat/centos/fedora System Password cracking

1. Enter edit mode by E in the Grub options menu

2. Edit kernel the line last plus s (or single)

3. Press B, start to Single-user mode

4. After entering, execute the following command

# MOUNT-T proc Proc/proc

# Mount-o REMOUNT,RW/

#passwd

#sync

#reboot

Two Debian Linux System password cracking

1. In the Grub Options menu ' Debian gnu/linux,... (recovery mode) ', enter edit mode by E

2. Edit kernel The back of the line to the RO single init=/bin/bash, press B to perform the reboot

3. After entering, execute the following command

root@ (None) #mount-A

root@ (none) #passwd root

root@ (None) #reboot

Three Freebsd System Password cracking

1. Boot into the Guide menu

2. Select each item (press 4) to enter Single-user mode

3. Enter a list of commands after entering

root@ #mount-A

root@ #fsck-y

root@ #passwd (Change Password command)

root@ #root (user name to crack password)

Enter New UNIX Password:

root@ #init 6 (reboot)

Four Solaris System Password cracking

1. Select the Solaris FAILASFE item in the GRUB option menu

2. System prompts do you wish to have it mounted read-write on/a? [Y,n,?] Select Y

3. Enter Single-user mode

4. Enter the following command: passwd

root@ #init 6 (reboot)

Five NETBSD System Password cracking

1. Power on: When the prompt symbol appears and the countdown begins for five seconds, type the following directive:

> boot-s (enter single-user mode command)

2. In the following hint sign

Enter pathname of shell or return for SH:

Press Enter.

3. Type the following directive:

# mount-a

# fsck-y

4. Use passwd to change the root password.

5. Use the exit command to enter multiple-person mode.

Six SUSE System Password cracking

1. Reboot the machine, after the Grub boot interface appears, add Init=/bin/bash to the boot Linux option, and the command line is available by passing Init=/bin/bash parameters to the kernel so that the OS runs bash before running the login program.

2. Wait a moment to appear (none) #: Command line.

3. The input mount-n/-O remount,rw means that the root file system can be reinstalled to read and write, with read and write permission to modify the password through the passwd command.

4. When you enter the passwd command, you can reset the password.

5. Remember to use mount-n/-o Remount,ro to place the root file system in the original state after the modification is complete.