Articles

I have 251 images that are 128×128 in size; I need to create one big image that includes them all tiled together. The image will be 32128×32128 in size if all goes well (Paint.NET says it will be 3.8GB in size, fun times) I need to do this systematically, with a tool or a script […]

I want to set environmental variables permanently through a batch file. Is there a command to set Permanent Environmental Variable (other than SETX) for Windows XP service pack 3? commandSETX JAVA_HOME=”C:javajdk-1.4″is not supported in my machine. It is Windows XP service pack 3. Solution: Per user settings command line: % reg add KEY  /v JAVA_HOME

My task today is to open up and copy some files to 700 brand new micro SD cards. As I get going on this task I am finding that some of the Micro SD cards are telling me “sorry this drive is write protected” To copy the files I am using a standard SD to

My Seagate Expansion Hard Drive is not recognized by windows. When I connect it to the computer I do not see “Mass Storage Device” Under “Universal Serial Bus Controller”. I already check the troubleshoot and test for everything (Cable is OK, I checked in another computer, etc) It happen after I connect the Hard Drive

Just a general question of computer security – if I download a .pdf or .docx from an untrusted source, can it seriously harm my machine/give a malicious user access to my information? Or is it sandboxed somehow? (Sorry if there’s a different Stack Exchange I’m supposed to be posting this on.) Solution: PDF files have

There’s a strong belief amoung non-technical people that home computers should not ever be left on unattended – since they are electrical devices and can go up in flames and set the room on fire. Now it’s obvious that any component inside the computer system unit can break at any moment and maybe even produce

I’m running Windows 7 Professional. Is there any way to make a user’s directory (anything under C:UsersFoo) encrypted? I’m looking for something like Apple’s FileVault feature. When I login as an administrator and attempt to access a standard user account’s files, I can access them without having to enter any password. This means that standard

I’ve never quite got this. Just say you write a small program in any language at all which rolls some dice (just using dice as an example). After 600,000 rolls, each number would have been rolled around 100,000 times, which is what I’d expect. Why are there websites dedicated to ‘true randomness’? Surely, given the

So I was thinking about viruses recently, and wondering how exactly antiviruses keep up?Considering anybody who’d been coding for a few weeks could hack together something do do nasty, nasty things to somebody’s PC, the quantity alone would make a simple list of hashes prohibitive, so how do antiviruses do it? Do they monitor process

How can I retrieve a list of the SSL/TLS cipher suites a particular website offers? I’ve tried openssl, but if you examine the output: $ echo -n | openssl s_client -connect www.google.com:443 CONNECTED(00000003)depth=1 /C=ZA/O=Thawte Consulting (Pty) Ltd./CN=Thawte SGC CAverify error:num=20:unable to get local issuer certificateverify return:0—Certificate chain 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google.com   i:/C=ZA/O=Thawte Consulting (Pty) Ltd./CN=Thawte