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1500 questions
114
votes
13 answers
Why doesn't "add more cores" face the same physical limitations as "make the CPU faster"?
In 2014, I hear a lot of programming languages touted for their concurrency
features. Concurrency is said to be crucial for performance gains.
In making this statement, many people point back to a 2005 article called The
Free Lunch Is Over: A…
Nathan Long
- 26,565
114
votes
6 answers
Why did the IETF specifically choose 192.168/16 to be a private IP address class?
Why did the Internet Engineering Task Force (IETF) choose 192.168/16 to be a private IP address classand not something else?
Why specifically 192.168/16 and 10/8 and 172.16/12 and not 145.243/16 for example?
Is there a reason those IP addresses were…
Cornbeetle
- 1,350
114
votes
15 answers
Bad sound through bluetooth headphones
I have a problem with the sound quality of a pair of Acoustic CHP600BT Solutions Bluetooth Headphones - Black.
When I connect these headphones to my phone (Samsung S2 plus), the sound quality is perfect, but when connecting to my laptop the sound…
iCoRe
- 1,241
114
votes
5 answers
How can I find out where an email really came from?
How can I know where an email really originated from? Is there any way to find it out?
I have heard about email headers, but I don't know where can I see email headers, for example in Gmail. Any help?
Sirwan Afifi
- 1,562
114
votes
19 answers
How do I physically prevent people from unplugging an Ethernet cable?
We have a crowded computer laboratory. We render free Ethernet ports for laptop users. But they don't carry their Ethernet cables with them, they unplug cable of a fixed desktop PC and plug it to their laptop. When their work is finished, they don't…
hkBattousai
- 3,131
114
votes
7 answers
How to exclude files (not folders) from dropbox sync?
I am trying to sync my Firefox profile folder using Dropbox, but there are several files that Firefox changes quite frequently
Folders: Cache, OfflineCache can be excluded
Files: urlclassifier3.sqlite, places.sqlite - these files are big and are…
Jun Jing Zhang
114
votes
14 answers
How can I always run the command prompt as administrator?
As a developer, I often have the need to open a command prompt for various purposes. For example, I use iisreset to restart my local web server.
I typically open the command window in one of two ways:
Press Win, type "cmd" and press Enter
While in…
Kevin
- 1,633
- 3
- 13
- 10
114
votes
5 answers
How should I choose my DNS?
When I have to choose my DNS I think that I should consider:
Speed
Reliability
Privacy
Control (reports and stats)
The main options that come to my mind, and how I weigh them according to the above factors, are:
My ISP = faster (closer to me) but…
Jader Dias
- 15,996
114
votes
15 answers
Ways to see a list of all the tabs open in Chrome?
You know how when you get to 10+ tabs open in your browser (in this case Chrome) and you can't tell which tab is which anymore? I'm sure there are some good extension or something - what's the best solution to this problem?
kenwarner
- 2,427
114
votes
12 answers
How to allow local LAN access while connected to Cisco VPN?
How can I maintain local LAN access while connected to Cisco VPN?
When connecting using Cisco VPN, the server has to ability to instruct the client to prevent local LAN access.
Assuming this server-side option cannot be turned off, how can allow…
Ian Boyd
- 22,187
114
votes
10 answers
Play MP3 or WAV file via the Linux command line
I would like to make an alarm system backed by a Ubuntu (no graphical interface) box, which plays various announcement and alarm audio tracks (.mp3 or .wav) via the command line.
For example:
$ root> audioplay ./hello.wav
The audio should come from…
c2h2
- 2,423
114
votes
4 answers
How do I format a usb drive on a PC that was formatted on a Mac?
I have a SanDisk Cruser drive that was formatted for a Mac and now I want to use it for a PC (and I don't have access to the Mac. What can I do?
tooshel
- 1,530
114
votes
10 answers
How to stop jucheck from running? Java won't remember "Check for Updates Automatically" setting
I've installed Java on Windows Vista, and every day I get a Vista security warning asking me if I want to run "jucheck". Apparently this is the Java automatic updater.
Well, I don't want it to run on its own, ever. I cancel it, and quit it. I…
Ken
- 2,919
113
votes
10 answers
How do I run Java apps upscaled on a high-DPI display?
I'm trying to run a Java app (JAR file) on a high-DPI display on Windows 10. The app uses Swing and thus isn't DPI-aware. Normally when I run an application that isn't DPI-aware, Windows will scale it for me, albeit blurry. But for some reason it's…
Jeff
- 1,280
113
votes
23 answers
Is there a method to export the URLs of the open tabs of a Firefox window?
If I have a Firefox window open that contains 10 tabs, is there a way in Firefox or by a plug-in to get the URLs of those 10 tabs as a text file or some other format?
Right now if I want to do this I need to copy the URL of tab A, paste it…
hekevintran
- 2,717