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• Can a Mac Mini Server and XCode be used for multiple students?

  - by twerdster

  I'm not an administrator but Ive been given the task of finding out whether this is possible. The scenario is like this: At our university we are offering a course in basic iPhone programming for between 4 to 8 groups of students. We have a few iPads, iPods and iPhones but only two Mac Minis. We want to enable the students to work on XCode in the lab (and from home if possible) without buying 8 Mac Minis. Is this possible to do using a Mac Mini Server? If so how would it work if 2 or more groups want to use XCode simultaneously and to debug their programs on devices simultaneously?

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• how to master in Windows administration [closed]

  - by Mateusz

  what is, in your opinion, best way to become real Windows, advanced administrator? Of course it's possible to obtain MS Certificates, but they're rather very expensive. Almost two years of everyday working on Linux machine, teach me, that it's very important to read system logs. Anyway, I assume that it's enough - I think that you must be familiar with almost any hive in you registry and each trick in Windows CMD and VBS- although it's high time for PowerShell, still on many maschines, you have only an opprotunity of using CMD by default (and their owners are reluctant to install anything else). How I can accomplish this task? Which groups follows (superUser - it' obligatory), which articles read?

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• Is (Ubuntu) Linux file copying algorithm better than Windows 7?

  - by Sarath

  Windows Copying is a real mess ever since Windows Vista. Even Microsoft claims they've improved the performance, from a user perspective, it's not quite visible. Even with single file the copying window appears too much time for 'Calculating' and then finishing the copy(Even after 100% completion some times the dialog remains active). At the same time, I was backing up some files in Ubuntu Linux. I felt it's really fast. Might be a feeling caused by faster UI updates. I read an informative post from Jeff Atwood few years back on Windows File Copying. but what my specific questions are Is (Ubuntu) Linux file performance is better than Windows-7? Are both algorithms, Windows and Linux is making use of multiple threads and pipelining mechanism to improve the speed? If yes, which one is better?

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• switch duplicates packets and forward in two route

  - by sami

  there is a network including a router, two hosts and a switch which connects hosts to router. i have a virtual machine on my system. the network adapter is set to act as bridge. so the virtual machine and real OS are my 2 hosts on different LAN. they use one network card and are connected to a switch. when each of host send a packet to the other one, the switch duplicate the packet and forward it to both router and the other host. how can I solve the duplicate packet problem? Thanks.

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• Has ec2 made self-hosting possible for 'amateur' sysadmins possible?

  - by Blankman

  I'm a developer, and it seems ec2 has made it possible for a amateur sysadmin like me to setup and maintain a fairly large set of servers. Now I don't mean to undermine real sys admins, as I know the value of them but what I am trying to get at is that someone like me can setup and maintain a cluster of servers (front end web servers, with some db servers) using tools like ec2 and capistrano with the help of google. Now this isn't something I would do as a long term thing, but as a startup, one-man operation, I think I can pull this off until business takes off and I can hire this important role out. With ec2, I get my firewall, so I basically open up port 80 on my public facing server, which will run haproxy and route requests to my cluster of servers. Ofcourse I am simplifying the setup, but just want a feel for what you guys think about my perception. My application is a web application, that will be runing Ruby on rails (passenger) and talking to mysql or postgresql.

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• Explanation of nodev and nosuid in fstab

  - by Ivan Kovacevic

  I see those two options constantly suggested on the web when someone describes how to mount a tmpfs or ramfs. Often also with noexec but I'm specifically interested in nodev and nosuid. I basically hate just blindly repeating what somebody suggested, without real understanding. And since I only see copy/paste instructions on the net regarding this, I ask here. This is from documentation: nodev - Don't interpret block special devices on the filesystem. nosuid - Block the operation of suid, and sgid bits. But I would like a practical explanation what could happen if I leave those two out. Let's say that I have configured tmpfs or ramfs(without these two mentioned options set) that is accessible(read+write) by a specific (non-root)user on the system. What can that user do to harm the system? Excluding the case of consuming all available system memory in case of ramfs

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• How do I setup a Gnome 3.2 VPN connection (Fedora 16)

  - by mpeters

  I just switched to Gnome 3 on a new laptop to try it out. Lots of things are different, but I think I can get used to them. But I'm having a real problem trying to figure out how to get the new network manager to setup a VPN through the GUI. I have openvpn, NetworkManager and NetworkManager-openvpn installed, but when I click on the network icon in gnome-shell there is nothing about vpn connections in there. When I click the "Network Settings" link in that menu I just see menus for Wired, Wireless and Network Proxy and none of those screens has anything for VPN connections either. Any suggestions about where I need to look to setup my connections and how to make it easier connect when I need to?

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• What is a descriptive name for a web service that responds with plain text?

  - by Rich Shealer

  I'm looking for the proper name for a web service that responds with text as opposed to XML. As an example this "cardServer" service will return 5 cards for a poker hand. http://hostname:8080/cardServer/deal/Game=Poker&Qty=5 The result could look like this: Card1=Ad Card2=Kc Card3=Ts Card4=5d Card5=3d The real world example is not as trivial, but the concept is the same. Parameters if any are passed as POST variables. We currently parse the response into a string list and use the values. The process works just fine. What I'm wondering if this service method has a name that has easier tools to deal with the responses and therefore did we reinvent the wheel? For the record the service was provided and maintained by a customer.

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• Find & Replace in blogger

  - by Benjol

  (I just learnt that Yahoo are shutting down Geocities, this is a bummer as I used my account there to host two icons, in the days when Blogger didn't upload gifs. Now those two icons are referenced in every one of my 600+ posts). Blogger doesn't have a "Find & Replace in all posts" function. I'm wondering about using the API to hack something together, and wondered if anyone has already tried playing with the API, if there are any tips or things to avoid. Also if there isn't a sneaky shortcut (like switching to ftp, doing the replace locally then switching back?). Not 100% programming related, please be lenient, or at least answer my question before closing it!

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• HP DV5T laptop problems using Adobe in multiple monitors

  - by Rolnik

  I have a dualview arrangement of two monitors that works just fine for 90% of my applications. However, any time I open Adobe Acrobat Reader to the larger monitor, it fails to permit enlarging of the window to fill the entire screen. In other words, it seems Adobe crops the PDF view at about the size of the smaller of the two monitors, despite Acrobat being present in the larger monitor. I'm using nVideo graphics on the laptop, and connecting to the larger monitor through the docking port of a docking station. Any ideas how to get the Acrobat to be aware that it has more screen real-estate and use it fully?

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• Name of my sql server instance from outside the network

  - by Michel

  Hi, normally i connect to my sql server instance from my local computer, and then the server name to connect to is the name of my laptop. So i can connect to server instance 'MichelLaptop' But now i'm trying to connect to my server from outside my network, and the first thing i wonder is: what is the name of the instance? i've made a redirect to my local machine in the DNS of my domain, so i said (this is not the real data) testsql.mydomain.com goes to 190.191.192.193 and when i ping testsql.mydomain.com, i get a response from 190.191.192.193 But what then is the server name?

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• Change User Folder

  - by sazpaz

  So I had a backup and when restored it to my computer the User folder didn't actually change to use the backed-up folder, so now I have an owner folder (which is pretty much empty) and a my_username folder below C:\Users. How can I make my account use the my_username folder as the user folder? EDIT: I've tried creating a new account and then changing the name of my old folder to the name of the new account, but somehow Windows still knows it's not the 'real' user folder and creates a TEMP folder. In which registry is this configured?

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• Any limitations for putting an SSD in a Mini? How fast would an external HDD be via Firewire? Is Ser

  - by Cyrcle

  I'm considering getting a Mini for web programming. I do a lot of text searches so I want to put a SSD in it. Does the Mini have any limitations that might effect the performance of a SSD? I'm trying to decide if I should get a Mini Server. I'd like to be able to have two internal drives so one can be SSD for OS and the code I'm working on, and the other can be my storage drive. However, I'm not sure if I'll be using the extra functionality of the server edition OSX or not, so I'm reluctant to pay the $200 premium. In a "regular" Mini I could put the SSD internal and use an external big drive, but would the external drive be fast enough via Firewire? Thanks in advance for any info.

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• Install XP over Ubuntu. (Flash Drive)

  - by Joseph

  My girlfriend needs to install Windows XP over Ubuntu on her PC, because she need to run some software that Wine and a visual machine can't handle as well as the 'real' thing. Problem is, it seems very difficult to make a bootable flash drive with the files from a XP .iso from Ubuntu. All the guides I could find was about Windows 7, formatting the USB as NTFS, then use UNetbootin to extract the files to the USB. Problem is, that only works with 7, not XP. Does anyone know how I can make a bootable XP flash drive? Thanks! It's really important.

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• How to invoke a command using specific proxy server?

  - by Xiè Jìléi

  Some applications support proxy (http proxy or socks proxy), and some are not. For browsers, I can specify proxy server in the preferences/options dialog, and other applications may be able to configure proxy servers in config files. For general purpose, can I invoke a command using a specific proxy? Like following: $ proxy-exec --type sock5 --server 1.2.3.4:8000 -- wget/ftp ... I'm using Ubuntu Maverick. P.S. In win32, it can be implemented by hijacking the socket dlls, maybe, I'm not familiar with Linux programming, but I guess it's possible in Linux. though.

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• Use HAProxy or Nginx to Load Balance between VPS

  - by xperator

  I want to load balance + failover backup multiple vps webservers hosted on different providers. I heard that for HAProxy you need multiple server under the same subnet, plus a shared (virtual) ip address between load balancers. But it's not possible in my case cause every VPS is on different node/network. Is there a way to use HAProxy in this kind of setup ? ( Please explain how briefly, I don't want to hear your "YES" answer ) What about NginX? Is it possible to achieve same result with Nginx ? (when servers are located on different nets) I know about Round Rubin DNS, but it doesn't provide a real failover solution, neither a load balance between servers.

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• Registry (possibly) error in Windows 7 : I can not resize columns in any program except explorer

  - by Klugeman

  I experimented with Winbuilder and after some time I noticed that I cannot resize columns in uTorrent, move bookmarks and bookmark folders in Chrome, then cannot resize columns in Comodo Programs Manager - everywhere !!! Fro example , in uTorrent, columns just froze where I left them last time. But Windows Explorer is functioning properly. Where should I search for this problem ?? I think this is something wrong with registry, but regular registry cleaners do not helps. And I cannot even resize a columns in regedit - this is a real hell !

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• Windows Server 2008 R2 Maximum Processor Limit Confusion

  - by Stevoni

  As I was looking through the Windows Server 2008 R2 specifications, I saw that the maximum supported processors is 64 sockets for Datacenter addition. This puts the maximum number or cores at 256 (if all sockets are quad cores), which I think it's just silly, but whatever. And now the questions: How does one set something like that up? (Obviously not for me, but humor me) Are there multiple dual socket motherboards running in a giant case with a ton of memory? How does the OS see all of the CPUs if they're on different boards? What would be a real world example of a need to have 64 sockets attached to one operating system vs 32 2 socket servers?

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• application that could track amount of downloads

  - by user23950

  My ISP only limits me for downloading about 25gb a month. After exceeding the limit, my speed goes down by half for another month. And its really a pain. I'm real addicted on downloading stuff from the internet. My question is: Is there an application that can track the amount/size of downloads in a month. Is there a trick that I could use to fool the eyes of my ISP. If they say 25 Gb limit in a month. Does it include the webpages, manga streams, video & audio streams. Or just direct download and p2p.

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• Joining H264 *without* re-encoding

  - by jdmuys

  I have two halves of a single show in two .MP4 files, encoded in H264. I would like to join them without re-encoding. Is this possible? I managed to create a joined video as a Quicktime file (.mov) using Quicktime Pro, but then Quicktime Pro will not convert it back to .MP4 without re-encoding. This may be because looking inside the .mov file, the two H264 videos are in there still separated as individual "objects". I am also struggling with MPEG StreamClip without reaching a real solution. But I may have missed something. Note that I do not have the same issue with MPEG2 files. I can export them to a .MPEG container or a .TS file for example, and then I can join them without re-encoding using MPEG Streamclip. Any suggestion welcome, preferably using Mac software.

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• Macro - maintain paste link if new row is added to master spreadsheet

  - by Ross McLaughlin

  I have a master spreadsheet that has a portion of data (say columns a to e) that paste links to a report. Each row paste links to its own report. If I add a new row to the master spreadsheet I now have the wrong data linking into my reports. I know if I have the reports open when a change is made to the master it will update the reports. However, with the number of reports I will soon have this will no longer be practical. Is there a macro or formula that can be added to maintain the correct data link. I have no real knowledge on such matters and as much information as possible would be greatly appreciated. Many thanks in advance.

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• How to make local apache server public/visible ?

  - by George

  Hello. I am running an Apache2 server on a Fedora 13. I'd like to make it publicly accessible(visible).For example I'd like when somebody types http://my.ip.numbes/ that they would see what I have in my document root folder. Just for a presentation of a course work at university. Permissions are set to 755. User owning the document root is apache. SELinux is temporarily disabled. But port 80 is closed. I tried to open it by adding an entry to iptables and restarting them, no change. I guess I am missing something big here. Help would be greatly appreciated. Note: I have a static (public, real) IP address.

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• Can I make the shift+right-click the default right-click action on tasks in the task menu?

  - by fostandy

  When I right click on a running task in my start menu I usually get 3 options: Launch a new copy of this - I don't use this Pin this program to the taskbar - I don't use this Close window - I use this. Lots. So much so that in Windows XP I used to right click and press 'c'. Which I can no longer do because while it hilights the close MenuItem, it doesn't actually invoke it. If I shift+right-click on the task, I get the old menu upon which I can just hit C. This old menu is also generally much more useful as it has many more options I use considerably more frequently. Is there a way I can make this menu pop up as the default right-click menu? This is also proving to be a real pain to google. As I'm always up for improving my goo-fu, if you do google a fix to this problem I would appreciate it if you could share the keywords/phrases used.

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• [Linux] Bind/map Character to alt+[some key]?

  - by Paul

  OS: Ubuntu In programming and various terminal programs (Screen, Vim) the [, ], { and } tends to be used a lot. I'm using a Norwegian keyboard where these are placed such that I have to stretch my fingers a bit too long for whats comfortable. To make it easier I though I'd try to make alt+[some key] be one of these characters. Is there a way that I can bind, say alt+æ (Norwegian letter) to '{' system wide? Btw, is such thing called binding, mapping or something else? I'm getting a bit confused by the terms... :)

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• Digitizing notes?

  - by Nimmy Lebby

  I want to digitize my note taking. I was looking into using tablets or something of that sort but I feel that it would be too much of a challenge to type instead of actually writing my notes during meetings. That got me thinking into looking into something like LiveScribe. It looks neat but I don't know how it would work in the real world. How does OCR work with something like smart pens? How is the desktop applications? Any experience? Does anyone have an alternative suggestions? Positives and negatives? Any advice would be helpful.

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