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• How do i allow users to execute commands via ssh without allocating a psuedo-terminal

  - by Dani El

  I need to allow users to run a limited set of commands. But not to allow them to create interactive sessions. Just like GitHub does. If you try to ssh without a command it greetings you and close the session. I can acquire this by using ForceCommand some-script But getting in some-script i then need to eval user's input. Perhaps any other NoTTY-like option in sshd_config? --- UPDATE --- i'm looking for a pure SSH / Bash solution, not Perl/Python/etc. hacks.

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• How to create a hotkey to open diigo in Chrome browser?

  - by Nam Gi VU

  I'm using diigo extension in Chrome browser and feel quite tired of clicking the diigo icon every time I want to bookmark. I'm looking for a way to have a hotkey for it but can't find it in the option of diigo. I tried solution suggested by makeuseof website but the diigo booklet doesn't work as great as the extension - it requires to sign in again and again... !? If you have any work-around to get the hotkey for diigo, please share! Thank you!

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• What payment gateways do real customers really use when given the choice?

  - by ??????

  I would like to give customers the option of paying however they can whether that be through a proper gateway (e.g. SagePay) or through something else such as PayPal, Amazon Checkout or Google Checkout. Personally I have not bought anything through the Amazon Checkout except for on Amazon.co.uk and my PayPal buys have been limited. As for Google Checkout I have no idea what that is or how it works from a consumer perspective. I understand that people buying from smaller sites are happier to pay by PayPal as they have an account already and trust PayPal. As for Amazon Payments and Google Checkout, do people actually use them if given the choice? There are a lot of people on Kindles these days, happy to buy stuff via Amazon on their Kindle. Would Amazon Payments make sense to this growing crowd? With too many payment gateways on offer it might be confusing at the checkout. Does anyone know if this is a problem for genuine customers? I also have not seen many 'pay by Amazon Payments' icons on websites (you see PayPal all the time). Does advertising the fact that you can pay by Amazon Payments increase sales, e.g. to Kindle owners that have a nebulous book-buying account that 'their other half doesn't know about'?

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• Windows Media Center Missing?

  - by Eric

  I'm running Windows Vista SP2 64-bit, but it was SP1 when I bought the laptop. It came with Windows Media Center, but I originally found no use for it, so I deleted the shortcut. Now I DO want to use it, and I can't find it anywhere. However, when I insert a DVD, the option to play it with Windows Media Center will appear, and it will launch Windows Media Center, so I must still have it on my system somewhere. My question is, where? Is there an easy way to just run the program using the Run window?

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• Is Sql Azure useful without windows azure?

  - by KallDrexx

  I am currently doing some research to get some preliminary IT cost projections for a project, and I was looking at Azure. Since this is a startup, I do not want to deal with the IT operations myself and instead am looking at having it all professionally hosted. I am looking at azure due to the SLA assurances, already in place disaster recovery operations, and the reliability. I'm playing with some numbers, and I am wondering if hosting my database on Sql Azure is an option, while hosting the actual webpage on another host until I need the frontend scalability of Azure. Is this actually feasible or will the latency in requests between the web host and azure be too much and I would be better off hosting both on the same service?

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• What am I missing about PHP?

  - by Aerovistae

  It's like this mythical thing that a dominating portion of developers say is just the best option for back-end development, a part of development about which I know virtually nothing beyond the absolute basics. So I've looked up PHP tutorials a bunch of times, trying to figure out why it's so powerful and common, but it's annoying as hell-- all the tutorials treat you like a new programmer. You know, this is how you make an If Else statement, here's a for loop, etc. The "Advanced Topics" show you how to make POST and GET statements and whatnot. But there must be more to it! I don't get it! That's practically no different from JavaScript. What am I missing about this language? What else can it do? Where's the power and versatility? I've heard it called a function soup; where are all the functions? Please chide me. I'm clearly missing something.

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• Dial-in VPN Routing issue when on 192.168.x.x network range

  - by Ian

  I'm not an expert on networks but have a small office on the 192.168.x.x. range which is managed by a vigor (2800) router. I have enabled the VPN dial-in option on the router so I can get to the server on 192.168.1.100 which works fine from my macbook when i'm NOT on a local network with that is on the 192.168.x.x range. e.g. works fine when I tether over my Android smartphone but when I try & connect when on my home network, it connects, I can access the router (192.168.1.1) but cannot access 192.168.1.100 - traceroute doesn't hop via 192.168.1.1 I have enabled "send all traffic over VPN connection but again, not joy... Feels like the osx platform isn't routing the traffic out to the vpn endpoint as the destination address is on the local subnet but expect it would be. This work fine on a windows PC on the same home network. Any thoughts on what the issue could be?

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• Unsure about TRIM enabled on my SSD

  - by user84750

  I have a SSD OCZ Vertex4 installed on my laptop. I'm running Ubuntu 12.04 LTS. I have enable TRIM by adding "discard" to my fstab file. (also added option noatime). I rebooted my Ubuntu and followed These instructions here to test TRIM. The end results of my tempfile was all ffff's, when it should have read all zero's, which is telling me TRIM is not really working or enabled correctly. Did I miss something? Also, will it be a problem if only my /home directory is encrypted. AND if you ask why I have swap on my SSD, it's because I let Ubuntu set up my partition. When I have my SSD, I just wanted to install Ubuntu as fast as possible. =) I've done testing to see at which point it will start to use swap and it took a lot of applications open to finally use swap. I currently have 4 GB of memory. I might shrink this to like 512 MB or 1 GB the most. Here's some info about my file system setup. sudo hdparm -I /dev/sda1 | grep "TRIM supported" Data Set Management TRIM supported (limit 16 blocks) sudo fdisk -l /dev/sda Device Boot Start End Blocks Id System /dev/sda1 * 2048 242016255 121007104 83 Linux /dev/sda2 242018302 250068991 4025345 5 Extended /dev/sda5 242018304 250068991 4025344 82 Linux swap / Solaris ls /dev/mapper control cryptswap1

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• 'Slow down' A DHCP server on purpose.

  - by Ced

  As the title implies, May look like a silly question, But what i'm trying to do, Is to have 2 DHCP servers in one network. One only leases IPs to Bootp clients (And if the client re-requests immediately after leases again) And one DHCP server, which is builtin with my PFsense router, that leases the non-bootp clients so they can access the internet and other network resources. I know by chance that PFsense uses ISC-DHCPd. Maybe they have a delay option? All i need to do to make sure the bootp/PXE boot clients get the proper address, is slow down the DHCP server in the PFsense box. Question is how. Anyone ideas? Thanks in advance

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• Sharing git repo without SSH

  - by user13323

  Hi. I'm trying to set-up a private git repo for code sharing, but found out that most of the implementations out there require use of SSH public keys, for example: http://www.jedi.be/blog/2009/05/06/8-ways-to-share-your-git-repository/ The only approach looking reasonable is the git-daemon, but it does not contain any authentication, and while it might be a good option for LAN, it is no go for remote working. Coming from SVN daemon, where all the access was conveniently controlled via single file, the SSH keys scheme quite a hurdle for me. Is there any way to securely share multiple Git repositories, without using SSH authentication? Thanks in advance!

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• Enable live streaming on website

  - by Somebody

  I have a server colocated in a datacentre (dedicated 1Gbit line, SSDs, etc.) running CentOS 5.4 64-bit. I want to stream live video from a device (webcam, camcorder, whatever.) to my server which inturn can re-broadcast it on demand through a flash player (such as Flowplayer) so that more users will be able to watch the stream since the server is quite fast. Does a solution like this exist already (streaming software from live source to flash media server) or will I need to hire someone to code it? I see that VLC has an option to stream video.. will that be suitable in this case? Or is there a better way to do it? I don't want a browser based solution on my end. It'll be great if this can be done without running an X server but I don't mind either way. This will be running on a dedicated PC at home.

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• Friday tips #2

  - by Chris Kawalek

  Welcome to our second Friday tips blog! You can ask us questions using the hash tag #AskOracleVirtualization on Twitter and we'll do our best to answer them. Today we've got a VDI related question on linked clones: Question: I want to use linked clones with Oracle Virtual Desktop Infrastructure. What are my options? Answer by John Renko, Consulting Developer, Oracle: First, linked clones are available with the Oracle VirtualBox hypervisor only. Second, your choice of storage will affect the rest of your architecture. If you are using a SAN presenting ISCSI LUNS, you can have linked clones with a Oracle Enterprise Linux based hypervisor running VirtualBox. OEL will use OCFS2 to allow VirtualBox to create the linked clones. Because of the OCFS2 requirement, a Solaris based VirtualBox hypervisor will not be able to support linked clones on remote ISCSI storage. If you using the local storage option on your hypervisors, you will have linked clones with Solaris or Linux based hypervisors running VirtualBox. In all cases, Oracle Virtual Desktop Infrastructure makes the right selection for creating clones - sparse or linked - behind the scenes. Plan your architecture accordingly if you want to ensure you have the higher performing linked clones.

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• Is Rsync like subversion, but for a server?

  - by johnlai2004

  I'm trying to learn how to use rsync. I want to create daily backs up of my production server. Right now I run the command rsync -azr /var/www/* [email protected]:/var/www Now let's say one day, I want to roll back the /var/www/ directory on my production server to last month's version. How do I tell rsync to retrieve version N? On reading that rsync only copies differences between src and dest, I assumed rsync works like subversion where you commit changes to a destination, and keep track of every version, and with the option to checkout any version at anytime. Is that the way rsync works? It's like subversion but for an entire server? That would be great because then it means I don't have to do full ssh copies for my nightly backups.

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• How do I disable spell checking in IE 11 (Win 8.1)?

  - by ComFreek

  My issue is similar to the one mentioned here: Disable spell checking in Internet Explorer 10 (Windows 8) I am using Windows 8.1 Pro 64-bit What I've tried already: Deactivating the spelling options: From the following, borrowed screenshot from the old Windows 8 (my interface is German, therefore I couldn't create one myself), I have turned both options off and restarted IE. It's still "correcting" my texts. Searching for 'spelling correction' addons: The indicated option in the following borrowed screensnot does not exist on my PC. Is there any way of disabling it? I prefer a canonical solution if one is available. If not, I am also interested in registry hacks or other solutions.

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• How to package static content outside of web application?

  - by chinto

  Our web application has static content packaged as part of WAR. We have been planning to move it out of the project and host it directly on Apache to achieve the following objectives. It's getting too big and bloating the EAR size resulting in slower deployment across nodes. Faster deployment times. Take the load of Application Server Host the static content on a sub domain allowing some browsers (IE) to load resources simultaneously Give us an option to use further caching such as Apache mod_cache apart from the cache headers we send out to browsers. We use yuicompressor-maven-plugin to aggregate and minimize JS file. My question is how do package and manage this static content out side of the web application? My current options are. New maven war project. Still use the same plugin for aggregation and compression. Just a plain directory in SVN and use YUI/Google compressor directly. Or is there a better technology out there to manage static content as a project?

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• Can't change picture import settings in Windows 7

  - by Joel in Gö

  I have foolishly set the picture import settings wrongly for when a camera card is put in my computer. It correctly asks me whether I would like to import the pictures using Windows picture import, and when I click on this option it flashes up the "import pictures" dialog very briefly, and then immediately gets on with importing the pictures to the wrong place. I simply want to click on the "import settings" link on the dialog - but it's too quick for me, and even if I do manage it it just ignores me. Windows Help, useful as ever, tells me to click on the link :) Any ideas? Thanks!

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• Serve my website from different server during downtime

  - by nfedyashev.mp

  I have a VPS server running in the cloud. Fully automated server image upgrade/downgrade(by RAM/HDD plans). The problem is that server upgrade/downgrade takes time and involves total unavailability during this period(up to 30 minutes). Goal: during this downtime server my website(http://mydomain.here) from different server with some message like "Under construction". How can I do this? -- mydomain.here is hosted on godaddy and uses its DNS(If I call it right). It's pointing with A-record to my VPS's IP address now. Change in these DNS settings will take more than 30minutes, so it's not an option. How can I find mode "dynamic" DNS? What should I learn?

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• Increasing load capacity for growing website

  - by markxi

  My website currently runs on a dedicated web server (with LiteSpeed) and dedicated MySQL database server. It's a download based site with a lot of user-generated content, which can be streamed and downloaded, there are also thousands of thumbnails and static content. I'm at the stage where the web server can no longer handle the amount of traffic, so I'm looking a how best to increase capacity considering the large amount of downloadable content. My host suggests mirroring everything on a second web server and distributing the load between them using either DNS Made Easy, or to have my own load balancer (using ldirector) in front of the two web servers. Could anyone advise whether the above method would be the best option? Does any one have any experience with DNS Made Easy and/or ldirector? I'd appreciate any help.

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• Word document to PDF: open hyperlinks in new window

  - by baens

  I have a Mircosoft Word document with hyperlinks in it. When I save the PDF document, those hyperlinks no longer open that link in a new window. I have tried all the settings under the "Target Frame..." option, but those don't seem to persist. Is there any settings that help with this to make all hyperlinks in the document open in a new window? I am currently using the Acrobat plugin, but could move to a different plugin if it offers this feature.

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• Creating different margins on the first page of a word template

  - by Paul

  I have a letterhead template and I need the first page left margin to be larger than subsequent pages. I've seen the option of placing a text box or image box in the header to push the text but this ends up throwing off the tabs and bullet list indentation markers. I thought of setting up the first page using two columns and pushing the text to start on the second column but I can't seem to find a way to get the text to switch back to 1 column on the second page when it is created from text overflowing. Does anyone know how something like this is possible? Thanks in advance, Paul

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• IE10 does not open .pdf

  - by user203298

  I can't open any PDFs in IE10 on Win7 64bit. I've tested with PDFs from Intranet / Internet / local file system, http and https. I've tested installing/uninstalling Acrobat Reader 11.0.03 and the Nitro PDF Reader. I've also tried enabling/disabling the Tools Internet Options Advanced Security Do not save encrypted pages to disk option. In Google Chrome PDFs are opened in the Acrobat Reader Plugin, but in IE10 the only thing I always get is a small cross in the top left corner of the browser. Can anybody help me?

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• What URLs must be in IE's Trusted Sites list to allow Windows Update?

  - by ewall

  Particularly for servers in which IE Enhanced Security Configuration is enabled, you need to have all the Windows Update/Microsoft Update URLs in your "Trusted Sites" list in order to use the site. (Furthermore, for domain member servers where Group Policy enforces Internet Explorer's list of "Trusted Sites", you don't have the option to edit the Trusted Sites yourself... so all the necessary URLs should be listed in the GPO.) So, what is the full list of URLs I'll need in IE's Trusted Sites? So far I have the following: http(s)://*.update.microsoft.com http://download.windowsupdate.com http://windowsupdate.microsoft.com I seem to remember there being several more...

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• Why is math taught "backwards"? [closed]

  - by Yorirou

  A friend of mine showed me a pretty practical Java example. It was a riddle. I got excited and quickly solved the problem. After it, he showed me the mathematical explanation of my solution (he proved why is it good), and it was completely clear for me. This seems like natural approach for me: solve problems, and generalize. This is very familiar to me, I do it all the time when I am programming: I write a function. When I have to write a similar function, I generalize the problem, grab the generic parts, and refactor them to a function, and solve the original problems as a specialization of the general function. At the university (or at least where I study), things work backwards. The professors shows just the highest possible level of the solutions ("cryptic" mathematical formulas). My problem is that this is too abstract for me. There is no connection of my previous knowledge (== reality in my sense), so even if I can understand it, I can't really learn it properly. Others are learning these formulas word-by-word, and get good grades, since they can write exactly the same to the test, but this is not an option for me. I am a curious person, I can learn interesting things, but I can't learn just text. My brain is for storing toughts, not strings. There are proofs for the theories, but they are also really hard to understand because of this, and in most of the cases they are omitted. What is the reason for this? I don't understand why is it a good idea to show the really high level of abstraction and then leave the practical connections (or some important ideas / practical motivations) out?

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• Address VMWare Fusion Linux guest by hostname?

  - by amrox

  I have a Ubuntu Server 9.04 image set up in VMWare Fusion 3.0.0, using the NAT option for the guest's network connection. From the Mac host, I can ssh to the linux guest just fine using it's IP address, but I would like to be able to refer to it by hostname for connivence. ie: mac-host:~ ssh [email protected] I had a similar setup using Parallels a couple years ago, but I don't remember how it was set up. It may have "just worked". Any suggestion on how to make this work?

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• Hiding Files in Windows

  - by frbry

  Hello, Currently, I'm developing a system which will extract some files from an SFX archive (files that will be used for another app). I want to make the extracted files hidden, so the person which has find the location of the exe couldn't get the files which will be in same directory with the exe. I know i can apply attrib +h to the files but if the user turns on "show hidden and system files" option in Windows, the files will be visible. Isn't there any method to overcome this? Any suggestion is welcomed. Thanks.

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