108
votes
4answers
23k views

How does Windows know whether it has internet access or if a Wi-Fi connection requires in-browser authentication?

In Windows 7, the notification area networking icon will show an error indicator if there is no internet access , and the error icon goes away once there is a successful connection to the internet . ...
107
votes
14answers
180k views

How to download files from command line in Windows, like Wget is doing?

How can I download something from the web directly without Internet Explorer or Firefox opening Acrobat Reader/Quicktime/MS Word/whatever? I'm using Windows, so a Windows version of Wget would ...
106
votes
8answers
117k views

Where does $PATH get set in OS X 10.6 Snow Leopard?

I type echo $PATH on the command line and get ...
106
votes
13answers
79k views

Permanently remove/disable Touch Keyboard in Windows 8 taskbar?

I have Windows 8 (final, MSDN) on my Macbook Pro Retina. Windows 8's ongoing, continuous tantrum of insisting that it's on a tablet device is causing it to always have a touch keyboard 'icon' on the ...
106
votes
5answers
9k views

How do identify whether my Linux computer was hacked?

My home PC is usually on, but the monitor is off. This evening I came home from work and found what looks like a hack attempt: in my browser, my Gmail was open (that was me), but it was in compose ...
106
votes
2answers
20k views

How to avoid exposing my MAC address when using IPv6?

On my Macs, each IPv6 address includes the MAC address of a specific computer (not of my router). Sites such as ipv6-test.com not only show it, but even tell me it belongs to an Apple computer. This ...
105
votes
3answers
65k views

Is there anyway to stop Windows 8 from restarting for an update?

My Windows 8 machine is going to restart shortly... I have tried a few techniques such as shutdown /a which is not having much luck. Short of pausing the Windows Update service, is there anyway to ...
104
votes
6answers
232k views

How to mount a HFS partition in Ubuntu as Read/Write?

I plugged in my external harddrive (which was formatted on my Mac into HFS+ journaled) to my Ubuntu desktop 9.04 64bit. I am not able to get the drive to mount with write capability, how do I do ...
104
votes
1answer
175k views

How to remove one or all auto-complete text entries in Chrome? [duplicate]

Possible Duplicate: Remove auto-complete field entries in Google Chrome Ok... so this is embarrassing. I typed in "boobs" on EncyclopediaDramatica's search because, well, it's a really ...
104
votes
5answers
278k views

What is the difference between an Intel i7 and a Xeon quad core processor?

I know the Xeon processors have been around for a long time and are mostly used in servers, but I am curious, why do people not use the Xeons in a high performance desktop? As far as I know about ...
103
votes
19answers
16k views

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 ...
103
votes
18answers
8k views

What's the quickest way to count the number of each character in a file?

I want to count the A's T's C's G's N's and "-" characters in a file, or every letter if needed, is there a quick Unix command to do this?
103
votes
2answers
7k views

Why does Firefox use the “chrome://” protocol / schema in URLs? [duplicate]

When I want to configure an addon, for example Ghostery, the tab shows a URL like this one: chrome://ghostery/content/options.html What does it mean? Does it have something to do with the Chrome ...
103
votes
4answers
5k views

Is there a way to enable “god mode” in Windows 8, like you could in Windows 7?

I am looking for a way to enable God-Mode in Windows 8, does anyone know how to do this or is it even possible? It's a trick that lets you access all system's controls in one folder.
102
votes
14answers
146k views

How can I send a Ctrl+Alt+Delete through Remote Desktop in Windows 8?

I need to send a CtrlAltDelete to a remote machine through Remote Desktop. The CtrlAltDelete is being intercepted by Windows 8, regardless of whether the remote desktop has focus or is in full screen. ...
101
votes
5answers
12k views

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 ...
101
votes
2answers
77k views

Go back to previous directory in shell

Is there a way to go back to previous directory we were in using bash,tcsh without using pushd/popd ? I'd like to type something like "back" and got returned to the previous directory I was in. Edit: ...
101
votes
4answers
9k views

What is the purpose of the tiny ruler that I've just pulled out of the side of my Dell Latitude E6430?

On the side of my Dell Latitude laptop, above the DVD drive, is a slot marked 'EC'. Pulling on it revealed a strangely shaped ruler with a temperature converter tool on the back. What is this? Why is ...
100
votes
21answers
6k views

Easiest way to find out if user has either Windows 7 or Vista (through telephone support)?

If you have to provide some initial troubleshooting support by phone [or email], and you don't have access to the user's PC itself, what is the easiest and most foolproof question one can ask of the ...
100
votes
3answers
84k views

Tell git which private key to use

ssh has the -i option to tell it which private key file to use when authenticating: -i identity_file Selects a file from which the identity (private key) for RSA or DSA authentication is ...
99
votes
15answers
8k views

How can I fix a computer that is infested with malware and is extremely unresponsive? [duplicate]

Possible Duplicate: How do I get rid of malicious spyware, malware, viruses or rootkits from my PC? I'm troubleshooting a Windows 7 PC for a friend. A couple of days ago it started running ...
99
votes
6answers
103k views

In Mac OS, what is the keyboard shortcut to switch between windows of the same application?

I often use the Cmd+Tab shortcut to switch between different applications (for example: Xcode and Google Chrome), but is there a shortcut to switch between different windows of the same application ...
99
votes
4answers
139k views

Difference between OTF (Open Type) or TTF (True Type) font formats?

On a Mac, when I'm downloading fonts am often given the choice between OTF (OpenType Format) and TTF (TrueType Format). Is there any difference in the way ligatures work or anything between the two ...
99
votes
5answers
216k views

How can I display the contents of an environment variable from the command prompt in Windows 7?

In Windows 7, when I start the Command prompt, is there any command to display the contents of an environment variable (such as the JAVA_HOME or PATH variables)? I have tried with echo $PATH, echo ...
98
votes
10answers
56k views

How do I set up SSH so I don't have to type my password?

How do I set up SSH so I don't have to type my password when connecting to a host?
98
votes
9answers
167k views

How can I roll back 1 commit?

I have 2 commits that I did not push: $ git status # On branch master # Your branch is ahead of 'faves/master' by 2 commits. How can I roll back my first one (the oldest one), but keep the second ...
97
votes
16answers
153k views

How to compare the differences between two PDF files on Windows?

Do you know a good Windows software to compare PDF files side-by-side and show the modifications between the two? It would be great if you can post both free and not-free products.
97
votes
6answers
139k views

How to get the summarized sizes of folders and their subfolders?

Let's say I want to get the size of each folder of a linux file system. When I use ls -la I don't really get the summarized size of the folders. If I use df I get the size of each mounted file system ...
97
votes
3answers
74k views

Why does MDS run wild in Mac OS X 10.6?

I've been having trouble with the MDS process running wild on my MacBook Pro 13". I've read on other support forums indicating that improperly formatted external drives can be an issue, but I have no ...
96
votes
8answers
15k views

If DOS is single-tasking, how was multitasking possible in old version of Windows?

I read that DOS is a single-tasking OS. But if old versions of Windows (also including Windows 95?) were just wrappers of DOS, how could Windows run as a multitasking OS?
96
votes
6answers
35k views

How to tell from what Ubuntu or Debian repository a package comes?

On a Debian-based system, including Ubuntu, how can one tell which repository a package will be downloaded from, without actually beginning the download? aptitude show and apt-cache info will show the ...
96
votes
15answers
98k views

Looking for HTTP debugging proxy for Mac similar to Fiddler on Windows [closed]

In previous jobs when I've worked on a Windows machine, I've used Fiddler for viewing HTTP transactions and debugging. I'm specifically looking to monitor the HTTP transactions for an ajax site I'm ...
96
votes
5answers
3k views

Why the heck does NTFS allow invisible executables?

You can hide any file inside of another file just by typing: type sol.exe > container.txt:sol.exe and to run the file hidden file just use: start c:\hide\container.txt:sol.exe But the crazy ...
95
votes
23answers
12k views

How can I make a Windows PC bullet-proof for home users? [closed]

I realize that virus-proof on a Windows PC is far fetched, but in the interest of keeping time spent as the "family-tech-support" to a minimum, I am looking for ideas to lock a computer down to the ...
95
votes
4answers
48k views

Why does Ctrl + V not paste in Bash (Linux shell)?

When I copy something to the clipboard and press Ctrl + V in Bash, nothing happens; However, right clicking and selecting Paste does the job. Why? Is there any reasonable issue (I'm sure there is) ...
95
votes
2answers
13k views

What limits Windows 7 x64 machines to <=192GB RAM?

I know motherboards, BIOS, etc may set lower limits on how much RAM we may install on individual machines. However, what defines the maximum RAM for Windows 7 x64? Is that a fundamental ...
95
votes
10answers
214k views

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 ...
94
votes
4answers
97k views

How can I resume a stopped job in Linux?

How can I resume a stopped job in Linux? I was using emacs and accidentally hit ctrl-z which blasted me back to the console. I can see it when I type 'jobs' [*****]$ jobs [1]+ Stopped ...
94
votes
6answers
91k views

How can I delete a symbolic link?

I created a symlink using mklink. Now I need to change it but I can't figure out how to delete it so I can recreate it correctly.
94
votes
8answers
42k views

Find what package a file belongs to in Ubuntu/Debian?

I frequently find myself missing a program, man page, or other file when working on my Ubuntu 8.04 system. Is there any simple way to look up what package contains a given file (whether it is ...
94
votes
10answers
42k views

Get colors in 'less'' command

when I read a file in Linux with the command 'less' or 'more', how can I get the content in colors?
94
votes
2answers
114k views

How to remove an entry from Chrome's Remembered URLs from the url bar?

I've got a URL in Chrome "local.mysite.com" that autopopulates when I start typing "local.my" into the URL bar. Note that this URL DOES NOT EXIST in my browser history (at ...
94
votes
2answers
83k views

How to add user to a group from Mac OS X command line?

trying to add a user to a group from the command line but can't figure out how? Specifically this is on Mac OS X Server 10.5.8 like to add user to 'admin' and 'wheel' groups
94
votes
9answers
47k views

Revert New Tab Page Behavior in Google Chrome 29+

I don’t like the behavior of the new tab page in Google Chrome 29+. How can I restore the old behavior? The new tab page (if you have Google set as the default search engine) now shows the Google ...
94
votes
5answers
20k views

Less and Grep: Getting colored results when using a pipe from grep to less

I use the --colour option of grep a lot, but I often use less as well. How can I pipe grep results to less and still preserve the coloring. (Or is that possible?) grep "search-string" -R * --colour | ...
94
votes
2answers
53k views

Where should the .vimrc file be located on Windows 7?

I recently installed vim on Windows 7 as a stand-alone binary. Where should I put my .vimrc file?
93
votes
9answers
71k views

How do I ensure Git doesn't ask me for my GitHub username and password?

I am working with a repo on GitHub and everytime I try to push something, it asks for my GitHub username and password. I don't want it doing that. I tried the instructions on setting your email in ...
93
votes
7answers
68k views

Native alternative to wget in Windows PowerShell?

I know I can download and install the aformentioned library (wget for Windows), but my question is this: In Windows PowerShell, is there a native alternative to wget? I need wget simply to retrieve ...
93
votes
9answers
8k views

What is the rationale behind safely removing USB media from windows PCs? [duplicate]

Quite often when I'm in a rush, I automatically pull out a USB pendrive or USB cable from an external hard drive from my desktop PC or laptop, without right-clicking on the safely remove icon in the ...
92
votes
9answers
7k views

Why is dial up so slow?

On a dial-up Internet connection, why is the speed is limited to 56 kbits/s compared to a broadband Internet connection which may carry 10 times as much as dial up through that same telephone line? ...

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