How Do You Install Firecracker on Ubuntu?

0 Comments

Problem scenario
You want to install Firecracker on Ubuntu. What do you do?

Solution
Run these commands:

release_url=”https://github.com/firecracker-microvm/firecracker/releases”
latest=$(basename $(curl -fsSLI -o /dev/null -w %{url_effective} ${release_url}/latest))
arch=`uname -m`
curl -L ${release_url}/download/${latest}/firecracker-${latest}-${arch}.tgz | tar -xz

sudo mv release-${latest}-$(uname -m)/firecracker-${latest}-$(uname -m) /usr/local/bin/firecracker

sudo setfacl -m u:${USER}:rw /dev/kvm

firecracker –version …

Continue reading “How Do You Install Firecracker on Ubuntu?”

What Is The Command to Find What Version of SSH You Are Using?

0 Comments

Problem scenario
You are concerned you have an older, vulnerable version of OpenSSH. What command should you run to see what version you are using?

Solution
ssh -V

Versions from 4.4p1 up to, but not including, 8.5p1 are not vulnerable due to a transformative patch for CVE-2006-5051, which made a previously unsafe function secure.

https://blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-server

…

Continue reading “What Is The Command to Find What Version of SSH You Are Using?”

How Do You Swap a Cryptocurrency in Coinbase Wallet when You Get “You need ETH before you can make a transaction on the Ethereum network” as an Error?

0 Comments

Problem scenario
You are using the Coinbase wallet. You try to swap a currency. You click on “Find best price.” But you see “You need ETH before you can make a transaction on the Ethereum network.”

You do have ETH in your wallet. How do you proceed?

Possible Solution #1
Use the Coinbase Wallet app on a phone instead of the website version.

…

Continue reading “How Do You Swap a Cryptocurrency in Coinbase Wallet when You Get “You need ETH before you can make a transaction on the Ethereum network” as an Error?”

How Do You Use PowerShell to Correct the Time on Your Windows Machine?

0 Comments

Problem scenario
You are trying to correct the time of your Windows machine. You run “w32tm /resynch”, but you get “The following error occurred: The service has not been started. (0x80070426)”. What should you do?

Solution

  1. Open PowerShell as administrator.
  2. Run these five commands:

net stop w32time
w32tm /unregister
w32tm /register
net start w32time
w32tm /resync /nowait

If you wanted a non-PowerShell method,

…

Continue reading “How Do You Use PowerShell to Correct the Time on Your Windows Machine?”

Why Does the Declaration of Independence Study Guide say Carter Braxton died in 1761?

0 Comments

Problem scenario
The “brief biographies of the signers” of the laminated guide of The Declaration of Independence (a QuickStudy Academic publication) indicates that Carter Braxton died in 1761. Why is this?

Answer
It is a mistake. He died in 1797 according to https://encyclopediavirginia.org/entries/braxton-carter-1736-1797/

The laminated guide is not bad all-in-all. You can buy it on Amazon.

…

Continue reading “Why Does the Declaration of Independence Study Guide say Carter Braxton died in 1761?”

Why Was The Bridge Considered “rude” in Emerson’s Concord Hymn?

0 Comments

Question
Emerson’s famous poem named Concord Hymn begins with: “By the rude bridge that arched the flood,”

Why was the bridge considered “rude”?

Answer
The short answer is the word “rude” means “unfinished” (as opposed to being disrespectful), and the condition of the bridge in the 1830s was poor [6] or possibly non-existent [5].

Here is the longer answer:

This was the poem with the well-known quote “the shot heard round the world.” It was originally written to dedicate a monument at the North Bridge [5] in Concord.

…

Continue reading “Why Was The Bridge Considered “rude” in Emerson’s Concord Hymn?”

How Do You Troubleshoot “ZFS modules cannot be auto-loaded” or “FATAL: Module zfs not found in directory”?

0 Comments

One of the two problem scenarios apply.

Problem Scenario #1
You run this: sudo modprobe zfs. You get this:

modprobe: FATAL: Module zfs not found in directory /lib/modules/6.1.0-37-cloud-amd64

Problem Scenario #2
You run this: zpool list

You get this:

The ZFS modules cannot be auto-loaded.
Try running ‘modprobe zfs’ as root to manually load them.

…

Continue reading “How Do You Troubleshoot “ZFS modules cannot be auto-loaded” or “FATAL: Module zfs not found in directory”?”