Will the Bitcoin network discredit a transaction if you do a simple transfer on a multi-sig after you found the collision on that address?

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amazon web services – Schedule, Compress, and Transfer files from EFS to Glacier

I want to create a process to transfer files from EFS, to Glacier – but with compression. Say there are directories with timestamps down to the hour. Every hour, I want a process that checks for directories older than 24 hours (configured), will zip-up the files in that directory, and move the zip-file to Glacier (and both the files and zipfile, deleted). Plus, high-reliability, some kind of failure/retry logic. And ideally, that uses an existing tool, or doesn’t require a lot of external coding/logic.

(Maybe I shouldn’t say EFS – it’s really just a filesystem on an EC2 server).

I’ve found a lot of tools that almost do this:

  • AWS DataSync – moves files reliably – but no option to add compression
  • AWS DataPipeline – transfers files with logic – but doesn’t support EFS? (Or Glacier, but I suppose I could move the files to S3, with a transfer to Glacier).
  • some hybrid solution, like
    • AWS DataSync with a cronjob that does the zip-file – but what about retries?
    • AWS StepFunction Workflows running a Task on the EC2 box where EFS is mounted

One tool that I’m fairly sure would do it, is Apache-AirFlow, which does workflows – but that requires a lot of manual coding, and I’m not sure if AWS StepFunctions would be the same result anyway.

It seems like this should be a solved-problem – schedule and compress a directory of files, move it to Glacier (with retry-logic) – but I haven’t found any really clean solutions yet. Is there something I’m missing?

updates – Updating Android make it to user more data transfer, now there is no way to block data by default

I have accidentally updated my Android One phone to v10 of 2020-05-01 and now each time I switch-on the phone data transfer is also on.

How can I disable data transfer by default so I need to manually enable it whenever I want.

Previously once I switched-off the data, by sliding a drawer from top of the screen and tapping data transfer triangle, it was off until I really made it on. It also stayed up when I rebooted the system.

equipment recommendation – Data transfer rates required to edit images on an ext HD?

I am in the process of sourcing an external HD for my Mac to store and edit images using Lightroom and Photoshop.

I shoot with a Canon full-frame camera therefore, the raw image files are in the order of 30 to 40 MB in size depending on the ISO, and some of my PS PSD files are in the order of 500 to 900 MB in size depending on the number of layers.

I intend to edit photos directly form the external HD.

For cost reasons I am not going to purchase a SSD based external HD rather I am minded to purchase an external HD with enterprise class 7200 RPM drives.

My question is; whether the data transfer rates supported by the following interfaces technologies are sufficient to edit images directly on the external HD?

  1. USB-C
  2. USB 3.0
  3. Thunderbolt 3

Or put it another way what data transfer rates that I should look for in products to meet my demands?


compatibility – How can I transfer photos from an old Canon Rebel EOS 350D to my computer?

Try toggling the Communication setting. Some users report that Print/PTP works for them (confusingly, this is the setting that should be used in order to connect the camera directly to certain Canon printers). Others report that PC connection is the correct setting.

Press the Menu button to bring up the menus. Press the Jump button, or use ◀︎/ buttons, until the Set-up 2 menu (yellow, looks like wrench+hammer “2”) is highlighted. Under Communication, try changing the option (it will be either Print/PTP or PC connection).

Connection menu instruction manual page 120 of Canon EOS 250D User Manual
Taken from page 120 of the Canon EOS 250D User Manual

If that doesn’t work, you will need to use a CompactFlash card reader to get the photos off of the CF card and onto your computer. They can be had for as little at $10 USD at various retailers online.


Note that because of the age of the camera (it was introduced in 2005), many of the support references are to older versions of Windows.

file system – Images and Videos not loading after transfer from ‘Internal Storage’ to ‘SD Card’

So I moved my files from Internal Storage to SD Card. But after that I found the files having errors in loading both on my file manager and my gallery. I have tried deleting the .nomedia but it still won’t resolve. Can anyone please help me with this?

Phone: Asus Zenfone Max Pro M1, Android 10

when trying to play a video

when trying to view an image

file transfer – Transferring contents of hard drive to new laptop

How do you transfer the contents of a hard drive to a new laptop?

I’ve seen many devices or gadgets mentioned in the internet, but I’m not sure what’s the right device for me.

Oh, and I’ve got another issue:
The hard drive is from a netbook running in a Windows 7 OS.

To anyone who’ve seen this and answered, thank you very much. Cause I’ve only got a very limited knowledge about drives and stuffs, your help will be very appreciated.

design patterns – Highly Available System | Transfer State Between Two Instances

If we had a highly available service running and that service required an update, I typically see that the service goes down for sometime, and then the new service comes up.

For discussion’s sake, let’s say this service tracks Virtual Machines on a host and takes actions with the virtualization layer (KVM/Hyper-V) based on some work queue, and also responds to user requests based on the work needed to be done.

I’m wondering if you could design some sort umbrella service that can act as a temporary interface to your service as the old version begins shutting down, and the new service begins to come up, so from the your service’s user’s perspective, an update is nearly seamless. What are some ideas on how to transfer state from Old Version -> Interface -> New Version?

short connections – Is a visa needed during a luggage-free transfer at Stansted (London, UK)

As to the visa part of the question: information available online is in conflict as to whether a visa is necessary or not.

This UK govt site is a self-check for UK visas. Entering your friend’s info (citizen of Ukraine, coming to the UK on her way to somewhere else, and presuming the Stanstead > Bulgaria flight departs from Stanstead on the same calendar day as her arrival at Stanstead and she will not leave the Stanstead terminal, she does not need a UK visa.

On the other hand, the International Air Transport Association (IATA) maintains a database of travel information, which is almost invariably checked by airlines before a boarding pass is issued. This is because if a passenger is refused at a transit point or destination, the airline must return the passenger to their departure point, and may be fined as well. The IATA Travel Center returns a finding that your friend will indeed need a visa unless she transits the UK at Heathrow or Gatwick (or somewhere else in the UK that isn’t Stanstead; I closed the window before noting it further).

When your friend goes to the airport in Ukraine to board her flight to Stanstead, before allowing her to board the flight, Ryanair will check to make sure she can enter the UK. The IATA database says she cannot, and it is either very likely or certain that Ryanair will not permit her to board the flight.

I have no resolution to offer here. One of the online sources is incorrect, but it is unclear from outside the systems (we’re just interested amateurs here on Stack Exchange) which is in error. In the past, both systems have shown inaccuracies online.

Given this uncertainty and the serious problems that will occur if things go wrong, you and your friend should consider the comment of @jcaron — with which I agree — that another itinerary would be a lot easier, a lot shorter, and probably worth the increased cost.

If she does take this flight, when she approaches UK Immigration at Stanstead, she should be prepared to show evidence of her next flight from the UK to Bulgaria.

This answer is only partial, as it does not address the Covid-19 issues raised by this international itinerary.

command line – Transfer a directory over ssh

I am trying to transfer a directory from a remote server(CentOS) to my local machine(Ubuntu) over ssh. There are two users : A and B. User A can ssh into remote server and has sudo access. User B owns a directory in remote server.

To transfer a directory owned by User B as User A, sudo needs to be used.

Currently for transferring a file (from remote to local) this is what I am using :

ssh -tt userA@remote_host 'stty raw -echo; sudo cat /path/to/remote/file/owned/by/userB' > /path/to/local/file

To transfer a directory I have tried the tar approach,

ssh -tt userA@remote_host 'stty raw -echo; sudo tar -C /path/to/remote/directory/owned/by/userB/ -czf - .' | tar -C /path/lo/local/directory -xzf -

However on the local system I get this error :

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now