1986
votes
7answers
2.2m views

What is the cURL command-line syntax to do a POST request?

How can I make a POST request with the cURL command-line tool?
1928
votes
3answers
214k views

Why does Windows think that my wireless keyboard is a toaster?

I've inherited an old PC from my girlfriend's dad and when setting up the printer I got a bit of a surprise:Two questions spring to mind here:Why does Windows think my wireless keyboard is a ...
1506
votes
6answers
155k views

How do I make a machine “blank screen” for a period of time (as a penalty) if certain noise levels are reached?

My kids (4 and 5) yell a lot when playing games on the computer. I found an effective cure for this. When I hear loud noises, I ssh into the game computer and do:chvt 3; sleep 15; chvt 7 This ...
1163
votes
9answers
879k views

How can I sort the output of 'ls' by last modified date?

How can I sort the output of ls by last modified date?
939
votes
19answers
491k views

What are the Windows A: and B: drives used for?

In Windows you have a C-drive. Everything labeled beyond that is with the following letter. So your second drive is D, your DVD is E and if you put in a USB stick it becomes F and the following ...
935
votes
11answers
475k views

How do I scroll in tmux?

I just started using tmux, and I really like it, but I need to be able to scroll within the buffers/panes/windows I have open. I don't care if it works with the mouse or not. When I search the tmux ...
805
votes
16answers
631k views

How to clear/flush the DNS cache in Google Chrome?

As you probably know Google Chrome has its own internal DNS cache. Is there a way to clear it without having to wait for the time out or close the browser?
782
votes
3answers
152k views

Transatlantic ping faster than sending a pixel to the screen?

John Carmack tweeted,I can send an IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?And if this weren’t John Carmack, I’d file it under “the interwebs being ...
646
votes
5answers
89k views

Why does this PNG image display differently in Chrome & Firefox than in Safari and IE?

Check this image out:On Chrome and Firefox it will show as a pear. Now, try to save it and look at it saved on your desktop. Also, try viewing in Safari or Internet Explorer. It will display as ...
638
votes
18answers
75k views

How are pseudorandom and truly random numbers different and why does it matter?

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 ...
540
votes
10answers
142k views

From a quality perspective, what is better: turning volume up in the software, in the OS, or on the speakers?

If music isn't loud enough, how do I get the best quality (even if the difference is in fact so small it's negligible)?By making the music louder in my music player, game or other sound-producing ...
533
votes
5answers
676k views

How can I get the same SSID for multiple access points?

I need to upgrade my existing wireless infrastructure and this time I want 2 access points to cover my house, since I get blind spots no matter what with a single AP. I have physical cabling to my ...
531
votes
13answers
3.1m views

Windows 7 SP1 Windows Update stuck checking for updates

I installed Windows 7 fresh and installed SP1. Now, when I try to check manually for Windows Updates it just hangs on the Checking for updates screen.I tried running the tools in How do I reset ...
481
votes
27answers
510k views

Is there a built-in checksum utility on Windows 7?

Is there a built-in checksum/hash utility on Windows 7?
477
votes
7answers
362k views

How to chmod all directories except files (recursively)?

How to chmod 755 all directories but no file (recursively) ?Inversely, how to chmod only files (recursively) but no directory ?

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