Tag: Computer

Computer Architecture – What Extend Opcodes? What are they good for? What would be a simple example?

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bitcoind – How to start the Bitcoin Core daemon automatically each time you restart your computer.

In the official document of bitcoin.org they are asked to use an init script instead of cron jobs. For more information, see the init scripts directory in the source tree of Bitcoin Core.

But the link does not work
Source code of Bitcoin Core

Cron job option

@refoot bitcoind -daemon

I wanted to know the init script to restart a daemon

Predictability – POS system can not recognize the master computer

A pharmacy has a 1 Gbps network with 4 computers.

The network has internet access via an ADSL / 2 router / modem.

The LAN is configured in subnet 192.168.4.

DCHP / DNS is provided by the ADSL router.

The computers are as follows:

LOTS master

Computer name: ADMIN

Operating system: Windows 10 Build 1803

Running LOTS Master Software and SQL Server 2014 SP2 Express

The network share LOTS is assigned to C: LOTS

Spend computer

Computer name: DISP1

Operating system: Windows 10 Build 1803

Run LOTS Dispense Software

POS computer

Computer name: POS1

Operating system: Windows 7 SP1

LOTS POS software is running

Computer name: POS2

Operating system: Windows 7 SP1

LOTS POS software is running

The matter:

When the POS2 computer starts the LOTS POS software, it can not access a required LOTS.mdb file on the LOTS master. This file is located in the LOTS master under c: LOTS

Windows computer to send emails

What software / package is required on a new Windows computer (such as Win10) to send emails. I understand that SMTP client software is installed to communicate with an SMTP server in order to send emails. I know we can use telnet to an SMTP server on port 25 and send emails. However, I do not know how an application should send emails – does this computer require integration with the SMTP client to communicate with the SMTP server?

I think I have a problem with the basic concept here? Anyone can help?

Generalized Graph – Computer Science Stack Exchange

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Remote Control – How do I know if my computer has been remotely controlled by an employer and monitored by it?

I'm working as a freelancer remotely, on a new Imac I bought extra for this gig. Until recently, I had a seat in the client's Adobe Enterprise and frequently exchanged files with the client. I became aware of suspicious activity, such as the cursor that moves on its own, and customers who relate to my work or computer activities they would not have known without access to my desktop or without mysterious system crashes. I have since tightened my security, but how can I detect the presence of a surveillance system or possibly an unused user and prevent access to my computer and potential invasion of privacy?

Machine Learning – The computer does strange things

My laptop is doing things that should not, for example
-it turns on the Ctrl + Alt + Delete screen and presses the unsubscribe button all by itself (using the mise pointer)
-The pointer presses the window key and then the off key
-When I tried to write this on my laptop, it put out the message
-If I am logged out, the password is either deleted each time I write or letters are added
– I can not stop the pointer from moving on its own
-If I tried to reset my computer, I get an error screen and it does not tell me what the error was

This started about 2 months ago
If you can, please help me to identify my problem

Docker logon fails on upgraded Ubuntu computer

I recently updated a couple of Ubuntu 12.04 machines to 18.04

You had old Docker versions (1.11.1, Docker Engine) that I uninstalled according to the guidelines listed here: https://docs.docker.com/install/linux/docker-ce/ubuntu/

The installation of docker-ce (18.09.2) worked well, but now there is a computer that can not log on.

Everyone else works fine, but this 1 machine gives me the following:

# docker login
Authentication with existing credentials ...
Login was unsuccessful, Error: Error response from the daemon: Get https://registry-1.docker.io/v2/: net / http: Request was aborted while waiting for a connection (Client.Timeout exceeded while on header was waited)
Log in with your Docker ID to transfer and retrieve images from the Docker Hub. If you do not have a Docker ID, visit https://hub.docker.com to create one.

If I then enter username and password, I get the following:

Daemon error response: Retrieving https://registry-1.docker.io/v2/: net / http: Request was aborted while waiting for connection (Client.Timeout exceeded while waiting for header)

While it works fine on the other machines with the same credentials, something has to be wrong with the settings for this device, but I have no idea what exactly is.

My suspicion tells me that it is trying to contact the wrong url?

iptables are completely empty, that's what my user can do Docker ps good without sudo, they were added to the Docker group.

Does anyone know what's going on here? Do I have to change the url it is trying to contact? If yes, how do i do that?

I have not always had control over this machine and nobody seems to know what exactly was going on with it. Nothing in the story is useful.

Is a computer language in JSON still a language?

Suppose you have a simple programming language that can add two numbers, and the form of the language is JSON as follows:

{
"func": "add",
"addendum": 42,
"addend_2": 24
}

Would it be appropriate to call this "programming language"?

My first impression is "Dude, nothing written in JSON can be a programming language." But I have a little effort to explain my reaction to my knee.

Another idea I have is that such a thing can be a thing Expression Speech, but it would require more extensive facilities (eg to create new functions) to reach the level of a programming language.

Which test would I use to decide how to classify such a thing? Like, "Is Turing complete?" Or what ever?

I suppose the next question is "What do you call a programming language written in a data language (as opposed to its own plaintext syntax), but first :))