I just upgraded from windows 7 to windows 8 and everything is working fine except notepad keeps opening on boot with a "access denied" window that comes up as well. I've ran MBAM and removed some junk, I've disabled every "file not found" item in autoruns as well as something that had a text/xml title in it and I've ran CCleaner a few times. Nothing is working, any help is much appreciated!
Tuesday, 27 August 2019
linux - How do I download a file using the command line?
I want to download a file from the Linux command line. Basically I'm using ssh and I'm trying to download a file to my file system on my laptop. How can I do that from the command line?
windows 8 - Android Bluetooth tethering, speed capped to 700 kbps?
I'm trying to use my Android HTC One for Bluetooth tethering (via Bluetooth PAN), so I can access internet on my Windows tablet (Dell Venue 8 Pro).
It works but I can't get any speed higher than 0.7 Mbit/s. Yeah, Wi-fi/USB tether works fine and I get way better speed, but I want to use Bluetooth over Wifi due to it's consuming less power and can be initiated from outside of the phone. Plugging USB cables also can be a hassle.
My setups are as follows:
Internet <--3G/Wifi--> Android (HTC One) <--BT Tether--> Windows 8.1 PC (Dell Venue 8 Pro)
Both HTC One and Dell Venue Pro 8 have Bluetooth v4.0, so I don't think the hardware involved being a limiting factor here, under Windows network status I can see 3 Mbit/s link
When tested with Speedtest.net APP on my HTC One I can get the full speed as usual
But when my DVP8 is tethered to my HTC one via BT this is what I'm getting: 
The 0.7mbps speed is consistent, I repeated the speed test several times. Which leads me to believe the BT throughput is capped for some reason.
I also have tested this on my Win8 Desktop PC and I'm getting exactly the same result. USB/WLAN tether gives me higher throughput, close to the speedtest app result.
According to Wikipedia the theoretical transfer speed limit for Bluetooth 4.0 is indeed 3Mbit/s, So I'm expecting 1-1.5mbit/s speed here. (It's the typical 3G bandwidth I can get on my area anyway).
Any thoughts? How can I get speed higher than 700kbps?
Any kind of experience or possible fix are welcome.
Thanks!
Answer
Found the culprit, The speed cap happened because the phone was connected to a Wi-Fi AP (effectively acting as Wifi repeater, but via BT). Perhaps something to do with the Wi-fi and BT uses same radio module, thus the speed limitation.
I can get decent throughput when tethering using 3G.
security - Why shouldn't we open an image in an email?
Most email clients do not display an image by default in the content of an email.
But I don't understand this yet. How can displaying image job attack the computer?
Answer
Emails can contain images in basically two different ways:
- The images are included as part of the email, i.e. attachment
- The images are loaded from the Web
The issues with these two are quite different.
The problem with the former, except bandwidth and storage, is possible issues with the software responsible for displaying the image.
Image files are processed by software to convert them from raw data into the actual images that are displayed. These software components can have general bugs or even security vulnerabilities that can accidentally or deliberately be exploited. Some images might be specifically designed to exploit these bugs, e.g. to crash your viewer (original article that crashed my browser years ago is no longer up).
Since this behavior is clearly a bug in the software, vendors prefer fixing issues with the image format components instead of making the users responsible for the stability of their programs. While it's an issue, as seen in the linked topic, it's far less of an problem than the one described below, in my opinion.
The latter has that same problem, of course, and additionally another, much more relevant issue:
The reference to the image in the email might have some kind of tracking, e.g. a part that identifies your email address or the specific email sent to you, so the sender can confirm your email address (in case of spammers) or that (and when) you actually read the email (many newsletters work like this — clicking links in these emails also often send you to some tracking/redirection web page first).
My mail client's online help states the following:
I can only disable loading remote images (i.e. those referencing URLs on the Web). Attachments in HTML emails are still displayed. Other email clients might handle this differently.
Since anyone can send you anything via email (unless you're strict on the filtering), it's better to be safe than sorry. That's why many email clients don't load or show images by default, requiring you to click on some button first.
command line - Displaying and storing Windows Batch file output
I've got a batch file written that runs a program we've developped, passing in a number of parameters. Whilst running the program in debug mode, a large number of debug messages are output, which it would be handy to review later, although I still want to be able to see the program running "live" as it were, within the cmd.exe window.
In a *nix environment I could use Tee to output to both the text file and stdout. Any suggestions?
Answer
TEE for Windows
TEE enables you to redirect standard output to a file and display it on screen simultaneously.
some_program | TEE [ /D:nn ] file_name
Available as BAT, Perl and Regina scripts.
Author's note.
The Rexx and Perl scripts will start displaying the result immediately. For the batch file, what it boils down to is, you may just as well redirect the command's output to a file and then display that file afterwards. As a bonus, that way you won't skip empty lines.
Note: These scripts were written just for fun. Even though the do work, they cannot compete with the "real" stuff -- compiled executables, written in "true" programming languages by true programmers.
I use Cygwin.
There is also Tee utility for Windows updated
Monday, 26 August 2019
ssh - How can I enable Telnet on a router
My router's telnet and ssh are disabled. It's a ISP supplied router so ISP disabled them.
Is there a way to enable telnet on a telnet-disabled router?
It's an Airties RT-204.
display - Fake Montitor for TeamViewer on Laptop with closed lid
I want to use my old laptop remotely (teamviewer) with closed lid. The problem is that the laptop will stop rendering windowcontent when the lid is closed. I found this answer: https://superuser.com/a/988097/825553 where it was suggested to conntect a 102 ohm resitor on the vga-pin 2 & 6.
My question: can I use a 100 ohm instead of a 102 ohm to fake a connected monitor?
Answer
Given that you use TeamViewer, you may want to try installing teamviewer's monitor driver. This should mean that teamviewer will use a virtual driver that works in any circumstances where a monitor is required. This should also allow you to use any resolution you need that is normally not supported by your monitor.
A restart may be required after you enable the monitor driver.
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