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• How can I get a virus by just visiting a website?

  - by Janet Jacobs

  It is common knowledge that you can get a virus just by visiting a website. But how is this possible? Do these viruses attack Windows, Mac and Linux users, or are Mac/Linux users immune? I understand that I obviously can get a virus by downloading and executing a .exe in Windows but how can I get a virus just by accessing a website? Are the viruses programmed in JavaScript? (It would make sense since it is a programming language that runs locally.) If so, what JavaScript functions are the ones commonly used?

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• In CentOS 4.3 Webmin 1.3000 bandwidth monitoring is eating disk space. How to delete those files?

  - by Silkograph

  I maintain Linux server being used for Mail, Squid and DNS service. Recently I observed that something was eating server disk space. But at last, today I caught the culprit which was consuming the disk by storing large number of files. On this server, Webmin 1.300 is installed. We use Squid proxy and Sarg to monitor Internet access. I always manually clear Sarg generated files under /var/www/html/squid for last few years. But I never realized that Webmin is also storing some kind of bandwidth log files in its' directory structure. I have noticed that under /etc/webmin/bandwidth/hours it has stored more thousands of files since year 2007 totaling about 17 GB. We have used 40 GB HDD for this server machine. My question is how can I delete those (/etc/webmin/bandwidth/hours) files safely?

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• What does Libre Office do to an existing Excel sheet to bloat its size?

  - by Sn3akyP3t3

  I try to avoid using Libre Office on existing Excel created workbooks because of the potential for unpleasant results. In this case Libre Office bloated the size of the workbook for some reason unknown to me. I would like to know if Libre Office does this to all Excel workbooks or just something in that workbook that causes it. Software involved: Microsoft Office Excel 2010 Libre Office 3.5.x (exact version unknown) Dropbox (merely to sync changes) Platforms involved: Office on Windows (master of the obvious on that one I suppose..) Libre Office on Mac OS 10.6 Types of data stored in this workbook: Text Integers 1 column with a simple formula spanning the entire worksheet representing that particular row (=CONCATENATE(A2285,B2285,D2285), =CONCATENATE(A2286,B2286,D2286), etc.) Total of 3,500 plus rows Here is a photo with details described within, but I'll go ahead and explain the photo as well: This screenshot is from Dropbox history of the .xlsx workbook. Version 61 - 68 were Office Excel. Version 69 - 73 were Libre Office.

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• Elastic beanstalk access private git repo

  - by user221676

  I am trying to currently add an ssh key to my elastic beanstalk instances using .ebextensions commands. The keys I have stored are in my application code and I try to copy them to the root .ssh folder so I can access them when doing a git+ssh clone later here is an example of the config file in my .ebextensions folder packages: yum: git: [] container_commands: 01-move-ssh-keys: command: "cp .ssh/* ~root/.ssh/; chmod 400 ~root/.ssh/tca_read_rsa; chmod 400 ~root/.ssh/tca_read_rsa.pub; chmod 644 ~root/.ssh/known_hosts;" 02-add-ssh-keys: command: "ssh-add ~root/.ssh/tca_read_rsa" the problem is that I get is an error when attempting to clone the repo Host key verification failed. I have tried many ways of try to add the host to the known_hosts file but none have worked! The command that is doing the clone is npm install as the repo points to a node module

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• Does reformatting the drive really removes spywares and viruses

  - by user23950

  I've recently read that the data that you deleted in windows using shift+del doesn't actually get deleted it is just made to be overwritable by other data that will soon be stored in your hard drive. And just marked as deleted. And there are some articles like this: http://www.howtogeek.com/howto/15037/use-an-ubuntu-live-cd-to-securely-wipe-your-pcs-hard-drive/ that shows how to completely wipe out the hard drive of all the data. And thus the data can't be recovered even by the most advanced software for recovering deleted data. Now my question is, does spyware, virus or other harmful really are lost forever if you reformat your drive?

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• How does an OS communicate with other hardware components?

  - by Jack

  How can a program running on a CPU (mostly OS) access other PC hardware? Such as Graphic card, HDD and so? From what I read, in DOS, this was done using BIOS calls, specifically the INT instruction. But, the INT instruction should only jump to the certain space in RAM. So how can some program stored in RAM access other computer hardware, when the CPU can only access RAM, and receive interrupts? Does Windows use INT instructions as well, or is there a new way to communicate with the hardware?

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• Excel annoyance: How to maintain formulas in a ledger?

  - by davidcl

  A common use of Excel is to create a spreadsheet which functions as a transaction ledger of some kind, where one or more fields in each row is calculated by adding a value or values from the current row to a value from the previous row. For example, if column C holds the value of a transaction and column D holds the balance, then the formula in row D3 might be =D2+C3. This formula would be repeated for every row in the ledger. A common annoyance when maintaining this type of spreadsheet is that if you insert a row into the middle of such a ledger, that row may be skipped when calculating the balance-- the formulas in the subsequent row have to be updated along with the formulas in the inserted row. Do you have any techniques for avoiding these problems?

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• How to efficiently dump a huge MySQL innodb database?

  - by Jagbir

  I got an Ubuntu 10.04 production MySQL database server where total size of database is 260 GB while size of root partition is itself 300 GB where DB is stored, essentially means around 96% of / is full and there's no space left for storing dump/backup etc. No other disk is attached to server as of now. My task is to migrate this database to other server sitting in different datacenter. Question is how to do that efficiently with minimum downtime? I'm thinking in line of: Request to attach an extra drive to server and take a dump in that drive. Transfer dump to new server, restore it and make new server slave of existing one to keep data in sync When migration is needed, break replication, update slave config to accept read/write requests and make old server read-only so it won't entertain any write requests and tell app developers to update there config with new IP address for db. What's your suggestions to improve this or any alternate better approach for this task?

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• Moving Away from Exchange public folders - Export to file system folder?

  - by Mr. Monkey

  I have a public folder that was used for the wrong reason. Due to some regulations we had to store lots of photos, we're talking at least 7000 photos that are stored based on a location of stores. So for example, each store would send in an email with at least 2 photos of their location, that email would contain their location name or number, and those photos, so there was some sort of organization for it. I would love to move the contents of that public folder to a normal windows folder we could share on a server. Is anything like that possible? Anybody have other ideas?

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• What happens to a Windows Dynamic Drive

  - by GruffTech

  In my windows (Windows 7) I have two primary logical volumns, One is on a SSD harddrive for my operating system and installed software, and my other is a Dynamic volume for my stored media. (I do alot of work with HD footage) I have all my media on the original DV tapes for backup purposes, just having them all available on my harddrive at all times is a major convience for me, well worth the few hundred dollar investment those 2TB drives were. Anyway, Long story short is my windows install has become problematic and I want to reformat windows. Does this, or will this effect my dynamic drive in any way? I've got almost 3 TB of video on there and i really dont want to re-import all my DV tapes.

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• Any website/software where I can add some text rows on daily basis

  - by Moorage

  I have few notes or text like few remembering lines on daily or weekly basis. I want to write it. but i should be able to see at any backdate /monthly or yearly. The date-time should also be stored when i enter text. is it possible EDIT: I will explain clearly what i exactly want. Suppose while working on internet 1)i find "ABC is good for BCD". now i want to add that text to some online site where i can see later 2)Now i can add those type of things any time and on internet i can see that in tabular form like click to see montly list , yearly or weekly 3)Other thing is i should be able to add text as easy as possible like in firefox if i can press some shotcut and enter something and it gets added there rather than opening the site and then write The to do list do that sort of thing but they dont have creation date , rather they filter based on due date.

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• SSL/https setup for herokuapp.com address rather than my actual domain

  - by new2ruby

  I have a subdomain of my site pointed to a rails app at mysite.herokuapp.com. I bought a certificate from godaddy and seem to have that all set up correctly. So that when I go to: http://mysite.herokuapp.com or http://dev.mysite.com it's redirected to: https://mysite.herokuapp.com or https://dev.mysite.com The problem is that when I visit dev.mysite.com, I get the error: Safari can't verify the identity of the website. But when I go to mysite.herokuapp.com, I don't get the error. I wanted this to be set up the other way, so that dev.mysite.com did not cause the error. I'm not sure where I went wrong. I used dev.mysite.com when generating the key and when setting it up at godaddy.com. Any ideas where I should look? P.S. The old site is hosted at dreamhost and the DNS info is stored there as well. So I created a subdomain there of type cname which points to mysite.herokuapp.com.

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• Windows 7 unresponsive after hibernate.

  - by Simon Verbeke

  The last few days, when I get Windows out of hibernate, Windows itself gets unresponsive. I can use any of my programs that were already opened before hibernating, but the window functions (closing, changing the size etc) aren't reacting. I can't open any new programs, except for the Task Manager. Also, I don't get an Internet connection. When I use Ctrl + Alt + Del, I get either a black screen, or the regular background. Then it hangs and after a while shows me a message that Windows failed starting up that "thing"(don't know what it's called in English, something with safety, etc). I have Windows 7 Ultimate installed.

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• Outlook 2010: When sending message on behalf of someone else, store that message in the other person's Sent Items folder

  - by Helge Klein

  We have an e-mail account for support purposes which is tended to by multiple members of the team. When answering a support e-mail we obviously choose the support account as sender. Still, the answer is not stored in the support account's Sent Items folder, but in the Sent Items of the person actually answering. This behavior, which seems to be by design, prevents others from gaining access to the entire conversation and potentially causes multiple answers. I am looking for an automated way of moving e-mails sent on behalf of someone else to that person's Sent Items folder. I tried to create a rule for this but could not find the right setting.

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• trouble with internet connection - slow to open web pages if they open at all until I put VPN on and then they open ok

  - by Caroline Coleman

  I am having problems with my internet connection. At the moment I am on a mac and connected through a netgear wireless router. The internet connection either won't open a webpage at all or if it does it takes ages. However if I turn my VPN on the pages open at a normal speed. Also skype functions OK and I seem to be able to download files ok. I have tried connecting with a wire between the router and the computer and it makes no difference.

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• Windows Advanced Firewall certificate based IPSEC

  - by Tim Brigham

  I'm working on migrating from using IPSEC settings stored under the 'IP Security Policies on Active Directory' to using the 'Windows Firewall with Advanced Security' for my 2008+ boxes. I have successfully been able to get this set up using Kerberos authentication, however my openswan implementation on my Linux boxes is using certificates. Whenever I try changing the authentication method to computer certificate (using RSA and my root CA) the connection is bombing out. I've made this change at both a connection request policy and on the IPSEC settings on the root Windows Firewall with Advanced Security node. The windows event log shows the authentication request is taking place but failing negotiating a mode. What am I missing here?

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• My Tablet PC has a jog dial (typically used for scrolling up and down) but it does not work by defau

  - by techtechmo

  I have an HP Compaq TC4400 and I recently was able to make most of the Tablet PC functions work in Ubuntu 9.10. (The step-by-step guide can be found in my blog.) Unfortunately I have yet to make the jog dial work. This would be particularly useful for scrolling up and down websites and documents when the TC4400 is in slate mode (with no access to the keyboard). I would be much obliged if anybody could tell me: How to find out the input button/key assignment that Ubuntu 9.10 has for jog-up and jog-down; How to assign jog-up to scroll up (D-pad key UP, or PAGE UP) and jog-down to scroll down (D-Pad key DOWN, or PAGE DOWN). I am using xbindkeys to assign different shortcuts to the quick launch buttons, perhaps I could use the same program for the jog dial? I would have done that, except I do not know how to find the proper button/key assignment for xbindkeys to use. Thanks in advance!

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• Is there any way to access the mp3 or other file type tags from within an ipod touch/iphone?

  - by quixotic1

  I am just looking for an existing app that will let me read all the tags that are stored in a particular song on my ipod touch/iphone. I'm not much of a programmer, but would be willing to learn the iphone sdk (on windows) if I could build a program that would do this for me. I would love to be able to modify the tag while on the iphone, but just viewing them would be a great use to me. I'd like to read the Year tag, the comments tag, composer, etc. It's so annoying that I can't do this. Or can I already and I just don't know how. Yes, I know how to view the lyrics tag. Seems they could have included the other tags. Help please? Thanks, Dave

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• Best way to convert from IMAP to POP3?

  - by Brad

  At work, I connect to a corporate Exchange server via IMAP and Thunderbird 3. Over the course of a year or so, I've created quite a few folders on the server and have a lot of mail stored there. I'm hitting the storage limit of my mail account and want to convert to pulling mail down to my local box (running Linux) via POP3. I know that polling mail will only get mail in INBOX, but I'm wondering if there are solutions out there that could be used to pull mail from the other folders as well, or am I doomed to moving mail into the inbox manually and polling over and over again?

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• 1 iPhone, 2 (potentially 3) Macs......& Google Apps Sync?!

  - by Goober

  Currently I use a beast of a G5 Mac at work for all my software/web development, an iMac G5 at home for personal use & a MacBook Pro for when i'm on the go. At work we make heavy use of all the Google Apps features such as calendar & docs etc. We all have an address book (local mac application) that gets synced with a list of contacts stored on our mail server. I want to be able to integrate the Google Apps calendar with my iPhone calendar (or even just iCal - which i can then sync to the iPhone). Essentially I want all three Macs to have the Google calendar synced to their version of iCal including the iPhone. I've heard that Google Sync handles something along these lines but i'm unsure if it's going to fulfill my needs? I'm trying my best to avoid having to use MobileMe..... Help greatly appreciated, Kind regards

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• How can I boot directly to a VirtualBox (.vdi) image (possibly via hypervisor)?

  - by Josh

  I have a system image in VirtualBox as a .vdi file. I am aware of how to convert this to other formats of VM using VBoxManage. I'd like to boot this image locally on a number of clients which currently have no OS installed. What's the simplest way to boot into this VM from bare metal? I'm willing to install some minimal OS if necessary. Is this even possible? Maybe there's something out there along the lines of VDI Blaster that will load a locally stored VM?

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• Inexpensive degaussers or HDD shredders?

  - by Nicholas Knight

  I do a lot of work for a small cash-strapped business that has a lot of active hard drives, most are consumer-grade SATA of about five years of age, and predictably they are dying at an increasing rate, and a lot of the time they can't even be detected, let alone complete a zero-out cycle. Right now those drives are just being stored, but that can't continue forever. We've got a couple bad LTO tapes it'd be nice to deal with, too. There are very real security and legal issues that make dropping them off with someone who claims they'll be properly destroyed a gamble. I've looked around at degaussers and HDD shredders, and the ones that don't look like they come from some guy in his basement all seem to be $3000+, which is hard to swallow right now. Is there anything out there in the $500-1500 range that you would recommend? (Speed isn't a big issue, if it takes several minutes or even hours per drive, that's completely OK, we've only got 10 or so thus far.)

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• rsync remote to local automatic backup

  - by Mark Molina

  Because all my work is stored on a remote server I would like to auto backup my server monthly and weekly. My server is running Centos 5.5 and while searching the web I'm found a tool named rsync. I got my first update manually by using this command in terminal: sudo rsync -chavzP --stats USERNAME@IPADDRES: PATH_TO_BACKUP LOCAL_PATH_TO_BACKUP I then prompt my password for that user and bob's my uncle. This backups the necessary files from my remote server to my local device but does somebody know how I can automate this? Like automatic running this script every sunday? EDIT I forgot to mention that I let direct admin backup the files I need and then copy those files from the remote server to a local server.

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• What's the shortest way to post a cropped screenshot on the web?

  - by Borek

  If I want to send someone a piece of my screen this is what I currently do: PrtScr or Alt+PrtScr Open Paint.NET Paste the screen shot Make a selection Crop image to selection Save image to some location - and remember it! Go to some image hosting site (there are plenty of them in the days of Twitter) Click their "Browse" button Browse for the image if I happened to remember the location where I stored it :) Upload the image and obtain the link which I can share This is simply too many steps. I don't usually mind doing steps 1 to 5 but especially steps 6 and 9 are annoying. Jing is pretty close to what I'm looking for but I find their horrible URLs unbearable. If there was something with similar functionality but better or pluggable hosting, that would be great.

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• Excel VBA Function runtime error 1004: Application-defined or object-defined error

  - by music2myear

  I'm trying to learn functions for the purpose of simplifying and reusing code whenever necessary. I began by turning something I use pretty often into a function: Returning the integer value of the last non-blank row in a spreadsheet. Function FindLastDataLine(strColName As String) As Long FindLastDataLine = Range(strColName).Offset(Rows.Count - 1, 0).End(xlUp).Row End Function Sub PracticeMacro() intItemCount = FindLastDataLine("A:A") MsgBox ("There are " & intItemCount & " rows of data in column A.") End Sub When I run this I recieve the runtime error '1004' "Application-defined or object-defined error" which Help helpfully defines as "someone else's fault" to quote not quite verbatim. Where might I be going wrong?

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