What Happens if a Cold Cryptocurrency Wallet Stops Working?

Problem scenario
There is disk corruption of your cold wallet for cryptocurrency. The hardware is broken or defective. What should you do?

Possible Solution #1
Do you have the recovery phrase/seed? You don't want other people to have this; they could get your coins.

To read about what you might do, see the following:

Possible Solution #2
Pay a service to fix the disk. We do not necessarily endorse the following services:

To learn more about cryptocurrency, see these two articles:

How Do You Insure Your Bitcoin/Cryptocurrency Holdings?

https://blog.trezor.io/where-in-the-world-are-my-coins-85a229417b06

If you want to buy a cryptocurrency wallet, check to see if it supports the ones you want before buying. You can browse them on Amazon here.

Protecting the recovery seed is essential for getting your cryptocurrency if your wallet is damaged. There are cryptocurrency wallet recovery plates made with titanium and steel capsules that can help protect your cold seed storage for your wallet.

How Do You Configure Your WordPress Website’s Homepage to Be The Latest Postings?

Problem scenario
You no longer want a static landing page for your website's home page. You are using WordPress. What should you do?

Solution
1. Log into WordPress
2. Go to Settings -> Reading
3. For the "Your homepage displays", choose the radio button for "Your latest posts".

How Does Linux Handle Ambiguous Redirects?

Problem scenario
If there are multiple files named "foobar", what would this Linux command do?

echo "ccc" > $(sudo find / -name foobar)

Here are your options:
a. Send "ccc" to be the content of the first file found.
b. Send "ccc" to be the content of the each file found.
c. Send "ccc" to be the content of the last file found.
d. Fail.

Which one do you think is correct?

Scroll down to see the answer.

Scroll down to see the answer.

Scroll down to see the answer.

Scroll down to see the answer.

Answer
D. Fail. The result of the above command if there were two files named "foobar" would be an error "ambiguous redirect". If you used echo $?, you would see a 1.

When You Boot a Laptop, You Cannot Use a Wireless Keyboard; What Should You Do?

Problem scenario
In a preboot menu, you want to use your wireless keyboard. You want to select an option, but only the keyboard attached to the laptop works. What do you do?

Solution
Can you boot the laptop without a USB splitter attached? If a four-port USB splitter is plugged in, this may interfere in the preboot menu with your ability to use a wireless keyboard. If you can power it off during the boot process, or unplug it from a USB port while your laptop powers on, this should help.

How Do You Fix “Failed to start docker.service. Unit docker.socket is masked”?

Problem scenario
You try to start the Docker service (e.g., with sudo systemctl start docker). You get this error: "Failed to start docker.service. Unit docker.socket is masked"

What should you do?

Possible solution #1

sudo systemctl unmask docker.socket
sudo systemctl unmask docker.service

This solution was adapted from this blog.

Possible solution #2
Uninstall Docker. Install Docker via the docker-ce repo. If you install a different version of Docker, you may be able to get around this error.