Typed 1 Command. My Linux Died ๐Ÿ’€

David Bombal ยท Intermediate ยทโ˜๏ธ DevOps & Cloud ยท1y ago

Key Takeaways

The video demonstrates the infamous sudo rm -rf /* command in a Linux virtual machine, showcasing its destructive power and the importance of using VM snapshots for recovery. It highlights the dangers of operating rm recursively on root and the use of the no preserve root option to override the failsafe warning.

Full Transcript

How did you do it without including the no preserve root option? And another comment, I was expecting that failsafe warning of adding no preserve root tag. Okay, so this was based on the video where I showed you how to destroy a Linux system with a single command based on the PewDiePie video. In this example, I'm logged in as root, so I don't actually need to use the word pseudo, but just to be consistent with a previous video, I'll do that. So pseudo rm-rf root press enter. Notice we have to use the no preserve root option to override this fail safe. So it's dangerous to operate rm recursively on root which basically destroys our system. The no preserve option will override this. But if I simply put start at the end there, it's actually not going to ask for the fail safe and it'll just delete the system. What you might have noticed there is some directories disappeared as soon as I did that. More directories are disappearing. So we are basically destroying the system using that command. You can see screen is going blue now. Folders are not looking good. Our system is destroyed. My command prompt closed down. System is destroyed. Blue screen now. Now, one of the things I did here as a real fail safe is I did this in a VM. So, if I reboot this, the system is destroyed. But I can bring it back using a snapshot. So, there you go. System is destroyed. But all I need to do to bring the system back is restore from a snapshot. This one was actually running. If you restore from a snapshot while the system is running, it will take more space. But there you go. I'm back again to where I was. So, system is restored now because I was running Linux within a VM. Highly recommend that you do that if you're new to Linux. Create a snapshot on a regular basis so that if you do mess things up, you can just restore your snapshot and things are back

Original Description

I ran the infamous sudo rm -rf /* command inside a Linux virtual machine just to see what would happen. Spoiler: It DESTROYS the system instantly. But thanks to VM snapshots, I brought it back like nothing happened. Don't try this outside a sandbox!
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Playlist

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1 RYU SDN Controller Part 4: Graphical User Interface (GUI): Practical GNS3 SDN and OpenFlow
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2 HPE Network Protector SDN Application Part 1 - Introduction
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3 HPE Network Protector SDN Application Part 2 : DNS Interception using OpenFlow
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4 HPE Network Protector SDN Application Part 3 - Lab Setup using Physical Switches
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5 HPE Network Protector SDN Application Part 4 - Demo of malicious websites blocked
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6 HPE Network Protector SDN Application Part 5 - Demo OpenFlow table interception flows
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7 HPE Network Protector SDN Application Part 6 - Demo of Physical Switch configuration
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8 HPE Network Protector SDN Application Part 7 - Demo Service Insertion Tunnel / GRE Tunnel
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9 HPE Network Protector SDN Application Part 8 - Demo SDN OpenFlow Reporting
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10 HPE Network Protector SDN Application Part 9 - Demo switches interception of DNS traffic
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11 GNS3 Talks: GNS3 version 1.5.X Appliance Tips
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12 CCNA 200-125 Exam: AAA demo: TACACS+ with GNS3
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13 GNS3 2.0.0 beta 2 install
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14 CCNA #012: Learn SNMP with GNS3, Wireshark and Solarwinds NPM - CCNA 200-125 exam
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15 CCNA #013: Spanning Tree CCNA Exam Questions: Know the answer? CCNA 200-125 exam
CCNA #013: Spanning Tree CCNA Exam Questions: Know the answer? CCNA 200-125 exam
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16 GNS3 2.0.0 beta : GNS3 VM integration with GNS3 GUI
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17 CCNA #018: Routing exam questions: Who wins? OSPF, EIGRP or RIP? Sure? CCNA 200-125 exam
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18 CCNA #019: Spanning Tree CCNA Exam Questions: Root Bridge, Root Port and more: CCNA 200-125 exam
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19 GNS3 Download, installation and configuration - GNS3 1.5.3 and Windows 10
GNS3 Download, installation and configuration - GNS3 1.5.3 and Windows 10
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20 CCNA #023 EIGRP Neighbor Troubleshooting (DUAL Issues) for the CCNA 200-125 Exam
CCNA #023 EIGRP Neighbor Troubleshooting (DUAL Issues) for the CCNA 200-125 Exam
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21 GNS3 2.0 Architecture and schema Part 1: What is the GNS3 Controller?
GNS3 2.0 Architecture and schema Part 1: What is the GNS3 Controller?
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22 GNS3 2.0 Architecture and schema Part 2: Emulators and virtualization
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23 CCNA #028 VTP Troubleshooting for the CCNA 200-125 Exam
CCNA #028 VTP Troubleshooting for the CCNA 200-125 Exam
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24 CCNA #029 VTP & DTP Troubleshooting for the CCNA 200-125 Exam
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25 CCNA #030 VTP Troubleshooting for the CCNA 200-125 Exam
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26 GNS3 : How to download Cisco IOS images and VIRL images. Which is the best? How do you get them?
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27 GNS3 ASA setup: Import and configure Cisco ASAv with GNS3
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28 GNS3 switching setup and options: Cisco and other switching options in GNS3
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29 GNS3 switching setup and options Part 2: GNS3 unmanaged built-in switch
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30 GNS3 switching setup and options Part 3: Router on a sick with GNS3 unmanaged built-in switch
GNS3 switching setup and options Part 3: Router on a sick with GNS3 unmanaged built-in switch
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31 GNS3 switching setup and options Part 4: Etherswitch Router for Cisco Dynamips Part 1
GNS3 switching setup and options Part 4: Etherswitch Router for Cisco Dynamips Part 1
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32 GNS3 switching setup and options Part 5: Etherswitch Router for Cisco Dynamips Part 2
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33 GNS3 switching setup and options Part 6: Etherswitch, Wireshark, 802.1Q, InterVLAN routing
GNS3 switching setup and options Part 6: Etherswitch, Wireshark, 802.1Q, InterVLAN routing
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34 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 1: GNS3 Switching Part 7
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 1: GNS3 Switching Part 7
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35 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 2: GNS3 Switching Part 8
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 2: GNS3 Switching Part 8
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36 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 3: GNS3 Switching Part 9
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 3: GNS3 Switching Part 9
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37 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 4: GNS3 Switching Part 10
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 4: GNS3 Switching Part 10
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38 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 5: GNS3 Switching Part 11
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 5: GNS3 Switching Part 11
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39 GNS3 Nexus (NX-OSv) switch setup and configuration Part 1: GNS3 switching options Part 12
GNS3 Nexus (NX-OSv) switch setup and configuration Part 1: GNS3 switching options Part 12
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40 GNS3 Nexus (NX-OSv) switch setup and configuration Part 2: GNS3 switching options Part 13
GNS3 Nexus (NX-OSv) switch setup and configuration Part 2: GNS3 switching options Part 13
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41 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 6: GNS3 Switching Part 14
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 6: GNS3 Switching Part 14
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42 GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 7: GNS3 Switching Part 15
GNS3 Talks: Docker, Open vSwitch, SDN and OpenFlow Part 7: GNS3 Switching Part 15
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43 GNS3 Cisco CSR 1000v setup and configuration Part 1: GNS3 NFV
GNS3 Cisco CSR 1000v setup and configuration Part 1: GNS3 NFV
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44 GNS3 Cisco CSR 1000v setup and configuration Part 2: GNS3 NFV
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45 GNS3 Talks: Use the NAT node to connect GNS3 to the Internet easily!
GNS3 Talks: Use the NAT node to connect GNS3 to the Internet easily!
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46 GNS3 Talks: GNS3 2.0 RC1 is now available
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47 GNS3 Talks: GNS3 2.0 Portable Projects - easily export and import GNS3 projects
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48 GNS3 Talks: Multiple clients sharing projects in real time, plus console session shadowing!
GNS3 Talks: Multiple clients sharing projects in real time, plus console session shadowing!
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49 CCNA #035 NAT Troubleshooting Scenario 1 - Can you find the issue? CCNA Exam 200-125 troubleshooting
CCNA #035 NAT Troubleshooting Scenario 1 - Can you find the issue? CCNA Exam 200-125 troubleshooting
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50 CCNA #036 NAT Troubleshooting Scenario 2 - Can you find the issue? CCNA Exam 200-125 troubleshooting
CCNA #036 NAT Troubleshooting Scenario 2 - Can you find the issue? CCNA Exam 200-125 troubleshooting
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51 GNS3 Talks: ESXi, GNS3 VM and KVM support Part 1: leverage servers and the cloud
GNS3 Talks: ESXi, GNS3 VM and KVM support Part 1: leverage servers and the cloud
David Bombal
52 CCNA #037 OSPF Troubleshooting - can you find the issue? CCNA Exam 200-125 troubleshooting
CCNA #037 OSPF Troubleshooting - can you find the issue? CCNA Exam 200-125 troubleshooting
David Bombal
53 GNS3 Talks: ESXi, GNS3 VM and KVM support Part 2:  leverage servers and the cloud
GNS3 Talks: ESXi, GNS3 VM and KVM support Part 2: leverage servers and the cloud
David Bombal
54 CCNA #038 NAT Troubleshooting Scenario 3 - Can you find the issue? CCNA Exam 200-125 troubleshooting
CCNA #038 NAT Troubleshooting Scenario 3 - Can you find the issue? CCNA Exam 200-125 troubleshooting
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55 CCNA #039 - OSPF DR, BR and DROTHER Election - do you know the answers?
CCNA #039 - OSPF DR, BR and DROTHER Election - do you know the answers?
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56 CCNA #040 NAT Troubleshooting Scenario 4 - Can you find the issue? CCNA Exam 200-125 troubleshooting
CCNA #040 NAT Troubleshooting Scenario 4 - Can you find the issue? CCNA Exam 200-125 troubleshooting
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57 GNS3 Talks: Arista vEOS GNS3 import and configuration Part 1
GNS3 Talks: Arista vEOS GNS3 import and configuration Part 1
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58 CCNA #041 - OSPF DR, BR and DROTHER Election - do you know the answers?
CCNA #041 - OSPF DR, BR and DROTHER Election - do you know the answers?
David Bombal
59 GNS3 Talks: Arista vEOS GNS3 import and configuration Part 2
GNS3 Talks: Arista vEOS GNS3 import and configuration Part 2
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60 GNS3 Talks: ipterm: Linux, Docker, Python, SDN and more! Part 1
GNS3 Talks: ipterm: Linux, Docker, Python, SDN and more! Part 1
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This video demonstrates the destructive power of the sudo rm -rf /* command in a Linux virtual machine and showcases the importance of using VM snapshots for recovery. It highlights the dangers of operating rm recursively on root and the use of the no preserve root option to override the failsafe warning. By watching this video, you'll learn how to destroy a Linux system with a single command and recover it using VM snapshots.

Key Takeaways
  1. Log in as root in a Linux virtual machine
  2. Run the sudo rm -rf /* command
  3. Observe the destructive power of the command
  4. Use VM snapshots to recover the system
  5. Restore the system from a snapshot
๐Ÿ’ก Using VM snapshots is crucial for recovering a Linux system after executing a destructive command like sudo rm -rf /*.
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