Super User Weekly Newsletter - Tuesday, September 29, 2015

Top new questions this week: What is the difference between 4K, UHD and QHD? Do we agree on one official resolution? Nowadays it seems that Full HD isn't enough anymore and the terms "4K," "QHD" and "UHD" are thrown around interchangeably. At the same time, there is not just one "4K" resolution in the catalogs. I ... display resolution language advertisements 4k-resolution   asked by KarmaEDV 62 votes answered by JakeGould 85 votes How can I prevent a folder from being inadvertently deleted by myself? I have a very important folder on my Desktop. I occasionally clean up my desktop and I am very concerned that I might delete the mentioned folder inadvertently. Is there a way to prevent such a ... windows-8.1   asked by JasonStack 34 votes answered by CodeCaster 107 votes What happens when I hover over a link in Chrome? When this link (http://a//%%30%30) is clicked in Google Chrome, Chrome breaks and closes all tabs and instances. But, in some cases I only need to hover over the link, and the tab crashes. What ... google-chrome crash   asked by Jéferson Bueno 33 votes answered by miyalys 37 votes How much can we rely on filesystem permissions for security? My question is about filesystem permissions (specifically the Unix style permissions) and how they relate to security. Say I have access to a computer with a guest user account and a user named Bob. ... security permissions filesystems file-permissions   asked by andy 27 votes answered by JakeGould 28 votes Why does wget give an error when executed with sudo, but works fine without? I tried the following command: $ wget -q --tries=10 --timeout=20 --spider http://google.com (From this SO post. I want to check my internet connection in bash.) I get following output: Spider ... bash sudo wget   asked by h0ch5tr4355 19 votes answered by Deltik 36 votes What are these special names, and how do they work? On Windows 10, if I create a folder called whatever.{ED7BA470-8E54-465E-825C-99712043E01C} it opens a folder with every Control Panel command. If I enter the location ... windows   asked by simplegamer 14 votes answered by Steven 23 votes Force cmd.exe prompt to run NOT as admin Related to my other question, I need to be able to run the command prompt NOT as an admin. Whenever I launch a command prompt, either from the Start Menu, or by double clicking the ... cmd.exe administrator   asked by deadlydog 10 votes answered by kreemoweet 20 votes Greatest hits from previous weeks: How do I get different background images on my dual monitors? Is there a way to set two different background pictures for my two monitors in Windows 7? By default the same background picture is used for both displays. I am looking for a solution without ... windows-7 multiple-monitors desktop-customization   asked by balint 214 votes answered by Travis 137 votes How do I get the distinct/unique values in a column in Excel? If I have a column with values, and I want to find out what distinct values are in there (not how many - but the actual distinct values), how can I do that? In SQL Server I would do something like ... microsoft-excel   asked by Kjensen 163 votes answered by A Dwarf 143 votes Can you answer these? How to reduce I/O operations to a flash drive? Background I often use different computers, and for that reason I like to aways keep with me a flash drive with my home directory, with my bash aliases and helpful functions, vimrc, Homebrew ... linux filesystems usb-flash-drive io   asked by homesickhog 2 votes UEFI detection (ESPs) Does the UEFI boot manager detect the ESPs inside the GPTs on every storage device, based on the global-scope variables (boot-configuration) stored in NVRAM? Reading the UEFI booting from ... boot uefi bootloader gpt bootmgr   asked by Jordan Davis 2 votes Typing "Ctrl+R" only lets me type a single character when I'm connected via SSH I connect to my server via ssh (PuTTY). Type Ctrl+R at the console. Type a single character. I can cycle through the previous commands by pressing Ctrl+R more times. But if I type another character ... linux bash ssh putty   asked by user1028270 2 votes

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