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• Use Amazon EC2 as a backup server

  - by MikeMurko

  I would like to use Amazon EC2 as an emergency backup database+web server in the event our primary host becomes unavailable. I feel like I wouldn't have trouble setting up a Windows instance, install SQL Server and get the web server up and running (would take a few hours, plus installing various libraries, our source code, etc). My question relates to pricing. If I simply "stop" the instance rather than "terminate" it, does that stop counting "instance-hours"? I would prefer not to terminate the instance and lose all that work I spent setting it up. If I must "terminate" in order to stop the billing - is it possible to make an image of the server after I have set it all up, then save that image somewhere (S3?) Is this something that people do regularly? Ideally this instance would just be waiting in the wings for an issue with our host, but costing us nothing except perhaps data storage costs.

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• How to stop Excel Treating US dates as UK dates?

  - by deworde

  I'm in the UK, I've got a problem where I've got a list of dates supplied in US format. Excel seems to treat the ones that are valid in both formats as UK dates, (e.g. 03/01/2012 becomes 3rd of January rather that 1st March), and treat the ones that aren't valid UK dates (e.g. 03/13/2012) as basic text. I assume this choice is something to do with my regional settings. What I want is the system to recognise that this column of text is supplied in US date format, and convert it into the underlying date representation for calculations. How do I do this?

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• Excel Countif external date

  - by Duall

  I am making an Excel 2010 spreadsheet to log support calls, services, and installations that each member would fill out. Due to being paid by job rather than by hour, there is a need for it to count each of these ("Call", "Service", "Install") there is in any given time span. The entry of the data itself would be in Sheet 1, and then a 'splash screen' of sorts would be in Sheet 2. Here I would like to be able to put a date range and it would display how many of each there is. I already can do the COUNTIF statement, =COUNTIF(Activity!$B:$B,"Call") but I don't know how to: a) Add in the prerequisite for a date so it only gets "Calls" within a certain time frame. b) Take the date it looks for from a cell on the splash screen.

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• How to stream multiple files on demand in VLC?

  - by romkyns

  Is there any way at all that I can set up VLC on a server PC in such a way that I can access a list of all my videos from another PC, and pick one to be streamed on demand? I've been pointed at this streaming guide (pdf), but it's pretty useless. For a start, most of the menus in those screenshots don't match the actual current version VLC, and then it sort of assumes you already know what you're doing. So far I managed to figure out how to stream a single file, which I must choose before watching on the server PC - pretty useless if you ask me! The impenetrable "UI" doesn't help either... (P.S. The reason I'm going for streaming rather than the very simple to set up network drive is described in this question)

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• Does the Dell Inspiron 1501 handle more than 4 Gb of RAM?

  - by zillion

  After the following comment on my last question, I'm thinking about upgrading my RAM: I got a 160 GB Scorpio Blue a couple months ago for my 1501. It's nice. That + 2 GB Crucial RAM have rather revived my notebook (meaning a very nice speed and storage boost). I was outgrowing it... – Nathaniel What would be the best choice to add more RAM? I've already got 2 GB, but I'm not sure what their speed is. What are the size, type and speed limitations for RAM on my particular laptop?

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• After turning my monitor off and on, it will display only a white screen

  - by Narf the Mouse

  About a month after installing a new graphics card, I started encountering a rather frustrating problem. Namely, if I turn my monitor off for any significant length of time, then turn it back on, it displays only a white screen. Previously, restarting could fix the problem. However, after leaving the computer off last night, the problem persists. An internet search turned up this site; however, the monitor cable is not loose. As for the insides of the monitor - Well, I could poke around, but I risk making it worse if it's not the monitor. Any such instructions should be clear, detailed and include pictures. Further updates as events warrant.

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• From where can I get "Python Launcher" for Mac OS X Lion?

  - by Phil

  I use a macbook (air) with OS X Lion on it. I have Python 2.7 installed already but I can't seem to find a "Python Launcher.app" anywhere on the system. I tried installing with with pip but it couldn't find anything to fetch. I tried searching on Google to find a downloader but my search yielded no results (for downloading). Where can I get this app? I have a folder with 20+ subfolders of GUI examples which in turn contain anywhere from 3 to 5 subfolders. I don't want to go through each within the terminal, would much rather launch these .py scrips from the finder. Thank you for your help.

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• What maintenance is required for a Postfix setup?

  - by JonLim

  I've taken a look at the setup and configuration process for a Postfix server, planning to use it for just sending emails out from my server. So far, I have these steps: Setup Postfix Configure Postfix Install DKIM Set SPF records Tune for performance Debug Seems rather straightforward. However, I was just wondering: are there any actions I should be taking for periodic maintenance of my Postfix setup? Thanks! EDIT: Also, just curious, how long would this entire setup ideally take? 30 - 60 minutes? More?

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• In a php script making /coderoot refer to /var/webroot/coderoot?

  - by Josh

  We are migrating a server and have modified the architecture slightly so that instead of /var/coderoot we now have /var/webroot/coderoot - I realize I could do a scripted find and replace, but I would rather have full unmodified reverse compatibility, or if that's unreasonable lets just say for theories sake. I tried using a symmlink ln -s /var/coderoot /var/webroot/coderoot but attempting to include a file in the code root using /var/coderoot/file does not work. I also tried using mod_alias with ScriptAlias and Alias. Neither worked. Is there anyway to do this?

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• Red Hat Kickstart: How do I Prevent partitioning?

  - by frio

  Hey all, I'm currently working on a new virtualisation setup using Xen, and Centos for my workplace. We intend to deploy the domUs into LVM volumes. Currently, the only thing preventing this from working as smoothly as we'd like is the Kickstart script's insistence on partitioning. This is the relevant part from our current KS template (which I've been messing with): # Partitioning clearpart --all --initlabel --drives=xvda part / --size=0 --grow --ondisk=xvda --fstype=ext3 This sets up a single partition and installs to it - which would be fine, but I'd prefer if there were no partitions, and installed directly to the existing LVM (so that we could then mount the LVM from the dom0 for backup and maintenance purposes). It's possible I'm doing something wrong, and should be exporting the volume as xvda1 rather than xvda - which I'm more than happy to amend - but I'm still not sure how I'd navigate the Kickstart! I'd really appreciate any help :). Cheers in advance!

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• DVI monitor detected only on computer startup

  - by kamil

  I've recently connected a new monitor, LG M2252D-PZ, to a rather outdated computer with Windows XP and Radeon 9600. XP has SP3 installed, video drivers are the latest version back from the times the video card was still supported. My problem is that the monitor works fine only as long as I don't turn it off or switch it to a different input. When I turn it back on, it says "no signal". The key to the problem must be the DVI port, to which the new monitor is connected. The previous monitor was connected to the VGA output, and I've tested that the new one also works fine when connected to the analogue port. Apparently, the computer tests for the presence of a monitor on the DVI port only on startup. The question is, how do I change this?

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• Clicking on a link in Chrome opens up Notepad

  - by jonsca

  I'm currently using Chrome 21.0.1180.89 on Windows 7, but I have noticed this behavior in other versions before. Probably about one time in a hundred, I will click on a link on a website and an instance of Notepad will open up with a blank page rather than the browser going to the link. To my knowledge, I have no malware or viruses on the machine that could be causing this. It's a minor annoyance, so I'm not very concerned about it, but I'm wondering if there could be a MIME type that's set wrong by default in the browser?

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• recommendations for disk -> usb backup software

  - by TWood

  Recently I lost a tape drive and rather than repair the unit I decided that backups to usb external drives would be cheaper. In the past I used NTBackup and figured that the new server 2008 R2 backup wbadmin utility would be able to meet my needs. It does not. I am looking for recommendations for another utility that i can use. My requirements are: -backup local disk in addition to files on a network share -scheduled task integration (or some gui options to manage schedule) -non-incremental backup Basically I could do this all with WBAdmin if it just supported network shares. I saw some links that described attaching a vhd pointed to a network share but I am trying to avoid hacks like that. If i'm going to do all that trouble I'd just as well manually copy the directories over myself. If anyone has any software suggestions that might make this task easier for me let me know please. I am considering BackupAssist but can only find a few reviews here and there for it.

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• Is there a way to create a copy-on-write copy of a directory?

  - by BCS

  I'm thinking of a situation where I would have something that creates a copy of a directory, tweaks a few files, and then does some processing on the result. This wold be done fairly often, maybe a few dozen times a day. (The exact use case is testing patch submissions; dupe the code, patch it, build/test/report/etc.) What I'm looking for could be done by creating a new directory structure and populating it with hard links from the origonal. However this only works if all the tools you use delete and recreate files rather than edit them in place. Is there a way to have the file system do copy-on-write for a file? Note: I'm aware that many FSs use COW at a block level (all updates are done via writes to new blocks) but this is not what I want.

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• VPN server on Windows Server 2008 for a small office

  - by cmbrnt

  I'm going to refurbish the IT-infrastructure for a small organization with one single office, and I'm not sure what VPN server to use. In your opinion, would the built-in Windows Server 2008 VPN server suffice or are there any specific problems with it as opposed to, for example, OpenVPN? I'd rather run a Windows native VPN server, but if there are few (preferably free) good alternatives, I could install VMware ESXi and virtualize both Windows and an OpenVPN-server. By the way, because of a low budget this office runs a solution with only one physical server. Any advice would be great to help me grasp this field of which I'm quite a novice. Thank you!

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• What could be causing LVM errors on first boot after install in Debian?

  - by ianfuture

  Hi, I've installed Debian (lenny) on a machine at home. It was set up during install to have a /boot partition, then the rest was encrypted, then had an LVM ontop of that, then all the other partitons inside LVM. After install completed and on first boot it asked for password to un-encrypt(same password for both drives) then it showed an error which said LVM could not find a physical device with a particular UUID or something similar. LVM install is over two HDs. One is 120GB and one 40GB. 120GB is Master on its IDE cable and this has /boot on it. 40GB is slave on the other IDE cable. Is there anything that could be done to rescue this install? Or diagnose problem? It took ages to get installed due to time spent enrypting drives and I'd rather not go through that again. :( Thanks.. Ian

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• Access server bound to localhost:5000 from different computer

  - by Jesse

  I am working on a web application using the Pylons framework. The web server is binding to localhost:5000 so I am able to access my application by going to localhost:5000 in my browser. I would like to be able to access the server from another computer on the same network. The computer that is hosting the server and application is running Mac OSX and the computer I would like to be able to access the application is running Windows 7 (I have cygwin with SSH installed as well as PuTTY). I could work around this by binding to the host name of the computer but would rather leave it running only on localhost. I was thinking I could do something with SSH tunneling but have not had any luck so far. Any ideas?

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• Is there a way to get x-mouse-type scrolling under the cursor for child windows within one program window?

  - by eigor40

  I've been messing with X-mouse setups, to enable scrolling for whatever is under the cursor, regardless of whether it has the focus or not. I've found several ways to get this to work between various 'parent' windows (Win7's built-in mouse options, WizMouse, etc), but I've found nothing that will do the same thing with (for example) several child windows with spreadsheets, open at the same time in one parent Excel window. I have the spreadsheets set up so that two are visible in the window at the same time, but I always have to click on either one to scroll it up and down. I'd love to be able to scroll these just by moving the mouse and doing the scroll, without the extra focus-change-click. I am not a big fan of running separate parent windows for each spreadsheet, which I realize would be something of a workaround. I'd rather keep the single parent Excel window, but still have X-mouse functionality within it. Anyone know of any way to achieve this? I'd call it "XMouse for Child Windows".

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• use correct-resolution background desktop image

  - by Rob Bos

  I have a desktop background image (a picture) in a half-dozen different resolutions, that I'd like to deploy to a disparate collection of computers with different monitors and video cards and whatnot. Laptops, netbooks, desktops, widescreen, and even a couple of "tall" screens. I have images to cover most of the cases. I would like Windows 7 to correctly pick the correct desktop background image via group policy. Now, the logon screen is already done. The OEMBackground method is rather clever, and lets you copy files of different resolutions to the machine, and the logon app will calculate the aspect ratio of the monitor and match it to a file as closely as possible. Is there any way to have that functionality on the desktop background as well?

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• < key triggers sticky alt on Windows 7

  - by Xoundboy

  When using a code editor like Notepad++ or Eclipse I'm experiencing a rather annoying problem: each time I type the < key the keyboard latches into some unexpected mode whereby the subsequent keypress behaves as if the alt key were being held down. The only way to return to normal mode is to hit the escape key twice immediately after I type a < character. The keyboard is a Microsoft Comfort Curve 2000 and the OS is Windows 7. Does anyone have any idea what I should do to stop this behaviour? Thanks

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• nginx: location, try_files, rewrite: Find pattern match in subfolder, else move on?

  - by Nick

  I'd like for Nginx to do the following: If the uri matches the pattern: http://mysite.com/$string/ and $string is not 'KB', and not 'images', look for $string.html in a specific subfolder. If $string.html exists in the subfolder, return it. If it does not exist, move on to the next matching location. $string = {any letters, numbers, or dash} For example, if the user requests: http://mysite.com/test/ It should look for a file called: /webroot/www/myfolder/test.html I've tried variations of: location ~ /[a-zA-Z0-9\-]+/ { try_files /myfolder/$uri.html @Nowhere; } But: It doesn't seem to find the file even when it does exist, and If it fails (which is always right now), it wants to jump to the @nowhere location, rather than moving on and trying to find another location that matches. I'd like for it to consider the current location "not a match" if the file doesn't exist.

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• Map localhost to IP address on Windows XP & Internet Explorer 7+?

  - by roblocop

  I'm trying to map 'localhost' to an IP address elsewhere on the network, say '10.0.1.1' for example. I've tried editing my hosts file, changing the entry from: 127.0.0.1 localhost to 10.0.1.1 localhost with no luck. The closest I've gotten is using DNS spoofing via Charles. Adding a DNS spoof entry mapping the host name 'localhost' to '10.0.1.1' works fine in Firefox, but fails in Internet Explorer, basically showing IE's 404 page. I'm wondering if there's some specific setting or way I can get DNS spoofing to work in IE? The main issue I'm trying to resolve is that our development environment points to 'localhost' and rather than setting the dev env up in a legacy Windows laptop to try and debug, point to a server that has it all setup and I can make the changes remotely.

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• Resolve local subdomain on apache for paths within user dir

  - by MaoPU

  On Apache 2.2.x I've activated mod_userdir. I used the default setup, so that http://localhost/~name/ will be connect with ~name/public_html/ and a path within public_html, e.g. ~name/public_html/mySite can be reached through http://localhost/~name/mySite. How can I achieve, that the same path can be reached through http://mySite.name.localhost/? I don't want a manual approach like it is suggested in other SF questions (such as http://serverfault.com/q/133921/53624), but rather want an automatic mapping of all available paths to the corresponding URL. I think, several steps will need to be taken: Change mod_userdir configuration, so that the subdomain of localhost will be connected with all available user names on the machine. The second step would maybe include the usage of mod_rewrite, so that the subsubdomain could be matched to the path within ~name/public_html... What would be your prefered way?

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• Remote sessions limited to two of many monitors?

  - by Xaephen

  I have 3 monitors attached to my local PC arranged in a triangle. My goal is to have the top monitor display local content, while displaying a remote session across the bottom two. I have gotten this to work with span and RDP, but I am looking for a software that would allow the remote sessions to be restricted to a number of monitors of my choosing, rather than spanning. Does this software exist? I've looked extensively. If there is a hack or something that might do it, I'm totally down for getting my hands dirty.

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• Password protected traffic meter

  - by UncleBob

  Hi first, I have a small problem for which I haven't found a solution yet. I live in Bosnia and share the Internet connection with the landlady, and as is usual in Bosnia, we do not have a flat rate, but a 15 Giga traffic limite. That would actually be more than enough, if the son of the landlady wouldn't be watching videos all the time, so the bills are truning out rather expensive. I have already installed a traffic monitoring program, but he apparently turns it off as soon as he comes close to his limit and then denies that he consumed any more. I therefore need at least a measurement program that is password protected and / or notes in the log when it's been turned off. Even better would be a program that just cuts his access when he exceeds his share, ie a mixture of Traffic meter and Parental Guard. Can someone help me out here?

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