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• Fake demostration software for command line

  - by Joe

  I'm looking for some software that would be useful for giving demonstrations. I regularly have to show the effects of scrips ect to classes while talking about their effects, and equaly regularly I have finger trouble and have to rewrite various commands - wasting class time and general energy. I'd like to be able to record a sequence of commands in advance, and then play them back at the speed of my choosing. So I might have a file that containes the commands: echo "hello world!" ls ls -l ls -l | sort I'd like to be able to play these commands back by typing similar ones in. So I'd have a blinking command prompt and if I typed 'echo "hxxx' the command prompt would read home$echo "hell and if I typed any other letters the terminal would fill up with the remainder of the command until I press enter, when it executes the command. The point is that even if I screw up the command when typing it, the command that I'd prepared in advance would be executed. My question is - does similar software exist for giving demonstrations? or even, is this an easy thing to script up...? EDIT - two quick things first of all I'm on osx - but it would be nice to get a general solution for other people who arrive here from google. and second a lot of the comments/answers are concentrating on, in effect, making it fast and easy to enter long commands by means of hotkeys and the like. Actually I'd like it to at least look like I'm typing live - that's why I put in the bit about the one-to-one keymapping, but I don't think I explained that quite as well as I could have...

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• Internet compression proxy for low speed broadband?

  - by user23150

  I live in a rural location, using high-latency wireless off a local ISP's tower. My speed tests vary day to day, but I can get around 1Mb up/down. The problem is, I work with large files, uploading and downloading (HD videos, development software, etc.). It can be painful to wait sometimes. Plus I do some side contract game development, and it can be very difficult to playtest with other developers (200ms ping is a good day for me). Now, obviously it's not going to be easy to solve the latency problem without different wireless hardware. But speedwise, I am wondering if I can use some kind of compression technology on a proxy. For instance, my work computer has full access to a 26Mb down, 10Mb up connection, that is totally unused at night and the weekends. If I could run some kind of compression technology on our server, and use it as a proxy to route to my home computer, I could stand to gain some major speed. I realize that by bogging down a system with compression, I could potentially lose whatever speed gain I had. But the proxy server is a quad core xeon, and the receiving computer is a pretty decent i7 computer, so that shouldn't be a concern. I found http://toonel.net/ but it seems more geared toward very slow narrowband users, like dial-up. Plus, I would prefer to just be able to point my browser to a proxy server, rather then install software on my client machine. EDIT I thought about my question a little more, and realize I am going to need to install software on my client in order to decompress, and possible compress (for uploading). That's not a huge deal.

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• Many clients on a wireless AP for UDP broadcast packets

  - by distorteddisco

  I asked this question on StackOverflow and was directed over here, so I'd appreciate any advice. I'm deploying a smartphone application as part of a live music performance that depends on receiving UDP broadcast packets from a wireless access point. I'm guessing that between 20 and 50 clients will be connected at any one time. I'm aware that a maximum of 20 clients per access point is advised, but as the UDP broadcast packets are ground through the LAN, how would I be able to link multiple APs together? I'm looking for recommendations on a suitable AP for this. The actual data transmission rates are very low - only a few kB/s - as I'm just sending small messages to the smartphone apps, and there will be no WAN internet connection. I tried it with a few connected peers on an adhoc wireless connection without any problems, but ran into dropped packet issues on an old WRT54G running ddwrt, though it's in pretty rough shape. What's the best way to do this? I suppose I could limit concurrent wireless connections to 20 clients... but more would be nice. EDIT: I should also say that it's purely one-way communication; the smartphone application is only receiving broadcast packets, not sending anything.

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• Workaround for Dell "Power Supply Not Recognised" issue

  - by Haedrian

  So, I have a Dell Inspirion and the power supply port appears to be damaged. Basically when I plug it in I get a nice popup telling me that it couldn't detect that its a Dell power supply so it won't charge the battery and underclocks the system. It still works for other purposes (that is, giving power) I thought it was the actual power supply cable so I bought a new one, that worked for a while, provided I inserted it at JUST THE RIGHT angle. But now that's not working anymore, so I assume its the part which connects to the computer. The battery charging I can live without, the underclocking I can't. I'd like a way around this issue. Things I've tried: Updating the BIOS Replacing the power supply cable Inserting it at different angles Turning it off and on again Swearing at it Twisting it while inserting it So, is there a workaround somehow? I'd like to avoid taking out my soldering kit and risking permanently damaging expensive equipment if that's allright. I'm hoping for a software solution. Added: The exact model is a Del Inspirion N5010

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• customer wont provide ssh access - ftp only

  - by Max

  Eh, here is my problem: I am working in a webdevelopment agency (thats a problem but not the real problem, read on). Most of the time I choose the live server myself when creating a new website project. But now the customer already has a "server" (10 GB on a cheapo host!) and the "admin" refuses to give me ssh access to it. But I need to access the server via shell because many files will be transported (need to be able to upload and extract a tar) and I need to insert or create mysql dumps via command line. He argues FTP and phpmyadmin should be enough... as far as I know the webspace was just ordered to host the website, so no security critical apps are running there. How can I either convince the admin to give me the ssh login or tell management that we need our own server? Anyone with similiar experiences? This is really annoying as this is a very small project that should be done fast and now one has to fight in order to just get the work done...

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• XBMC remote control key repeat

  - by Amigable Clark Kant

  Those who have used XBMC with a WiFi remote, such as an Android or iOS device with the official XBMC remotes, have probably seen this at one time or another: your remote stops working, when you press a key, that key is repeated very fast. Sometimes you can break the key repeat loop by pressing that same key again. Sometimes (as this particular morning) you can not. This problem has existed for literally years (it even occurs on the old XBOX only builds) but there seems to be no definite explanation as to what is causing it. I am asking for a workaround. (If you Google, you can find threads were people are ridiculed for bringing up this problem, which is one reason I ask here instead of on the official forums. Also the fact that this problem has persisted for so many years.) I am running, right now, XBMCBuntu Live Eden and the latest official iOS remote. Although, I have seen this problem on all combinations of remotes and XBMC versions I have tried over the years, which are many. (XBMC on Windows, Linux, OSX, remotes on Android and iOS.) Link to bug #136 for the Android remote. It's marked as "fixed" as of client version 636, but the problem is seen again in rev 730. Go figure. There is something fundamentally wrong with how keypresses are sent from the various remotes to XBMC, since this problem is seen across time, XBMC versions and iOS/Android.

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• How to protect folder privacy against unethical network administrators? [closed]

  - by Trevor Trovalds

  I just need a technical solution for the sake of my group's shared passwords, projects, works, etc. safety. Our network has Active Directory with public/groups/users and NTFS permissions, under a Windows Server 2003 which will soon migrate to Windows Server 2008 R2. Our IT crowd is small, consisting of 2 DBAs, 4 designers, 6 developers (including me), 2 netadmins and (a lot of) tech supporters, everyone has local admin rights. Those 2 network admins weren't the ones who set the network up, they just took the lift recently when the previous ones quit. We usually find them laughing at private contents from users stored in the groups AD, sabotaging documents that don't match their personal tastes and, finally, this week we found out they stole a project we (developers and DBAs) were finishing and, long before, they presented it to the CEO as theirs without us knowing. I'm a systems analyst, and initially my group decided to store critical content, like shared passwords, inside encrypted .zip files. Unfortunately we couldn't do the same to the other hundreds of folders and files, which included the stolen project, because the zipping process would take too long for every update. We also tried an encrypted Subversion repository under SSL, but there are many dummies (~38 atm) involved in the projects that have trouble using TortoiseSVN when contributing, and very oftenly we had to fix messed up updates. Well, I think these two give the idea of what we've been trying to reach. So, is there a practical "individual" protection for our extensive data or my hope can already be euthanized? P.S.: Seriously, at the place where I live/work, political corruption gone the wildest, so denounce related options are likely impracticable. Yet both netadmins have strong "political bond" with the CEO and the President, hence their lousy behavior and our failed delation attempts.

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• visually documenting web server configuration and infrastructure

  - by Alex Ciarlillo

  I have just finished a large re-organization and update of our institutions web server(s). This server hosts 3 virtual hosts, 3-4 blogs, 2 wikis, some legacy static HTML pages, and many hosted documents (PDF, .jpg, .xls). I have organized the site into a structure of something like: /var/www/sites/vhost1, vhost2, vhost3 .../wordpress/blogX .../mediawiki/wikiX Data is in a seperate directory structure so I can run a cron task over it to make sure it is all writeable and such. I then symlink to these data directories for each application. /var/www/data/vhost1, vhost2, vhost3 .../wordpress/blogX/uploads .../mediawiki/wikiX/images All Apache configs are in /etc/httpd/conf.d/vhosts.d/vhost1,2,3.conf On top of this there is also a testing server which mirrors this setup. Once changes are fully tested, they are rsynced down to the live server. All the wordpress installs and mediawiki installs are straight form SVN and updates are done by switching branches or "svn up". So my question is how can I best document to share with a) co-workers, b) possible future replacement, c) myself 6 months from now. Obviously I can make a wiki page, excel document, whatever and fill it with text, but I am looking for a more visual representation that I can use to explain the architecture to less-technical people. Ideally it would be awesome if this visual representation could then be expanded to get more technical details.

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• Putting and configuring grub on an external drive

  - by HisDudeness

  I want to put a bunch of minor emergency operating systems (such as GParted Live, DSL, Puppy Linux and so on) on a partitioned USB pen drive, with a dedicated grub boot loader on it, which I want to start when I select the drive in the BIOS to boot. The problem is: when writing grub boot options I must tell where kernel and initial ram files are located, but the USB drive can have different letters depending on when I did plug it in, if some others external drive were mounted. So, how can I write appropriate options which automatically refer to the drive grub is installed on without having to specify absolute paths, which might change (I mean, like (hd1,msdos1) ot /dev/sdb1)? And, while we are at it, can I have grub working on a device without an operating system on it to which it can refer? I mean, I want to address the command sudo grub-install /dev/sdb from the LMDE system I'm on right now, but I won't have LMDE on my pen drive. Is that a problem? And installing grub on another device, will I keep the grub I have right now on my HDD?

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• Conflicts with file from package mysql-5.0.77

  - by Whiteyq

  I'm trying to install APC (Alternative PHP Cache) on a CentOs dedicated server. I've everything done apart from configuring phpize. Running :yum -y install php-devel gives me the following error file /usr/share/mysql/charsets/Index.xml from install of mysql-libs-5.1.57-1.el5.art.x86_64 conflicts with file from package mysql-5.0.77-4.el5_5.3.i386 etc etc for other languages So, i think the mysql version i have is too old & i more than likely need to upgrade mysql to version 5.1. Im reluctant to do this as a) its a live server (although only 3/4 domains) b) ive read ill read to recompile php if i upgrade To add to this i have plesk installed for managing domains & might need reinstalling/reconfiguring also. sorry for the long intro but its my first post & best to give as much info as possible, so my question is basically Is there any way i can run :yum -y install php-devel to get phpize working to complete installation of APC for the version of mysql i currently have installed? ie 5.0.77

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• Nvidia GTX 660m crashes games

  - by dcap

  I just recently bought a Lenovo y580 with both HD intel graphics and an Nvidia GTX 660m. It works great except for one thing: playing games. Every time I load a game, either with Steam or Games for Windows Live, games will end up crashing. I've already talked with lenovo tech support and they couldn't help other than send my new laptop for repair which would take 7 days. So before I do that I thought I'd ask around. These are the games I've tested and what happens when they load: Civilization V: Game loads fine but once it gets loaded to the game, there's noticeable "tearing" popping up and certain things flash. Within a minute of this, the game crashes. Does the same thing regardless if Vsync is on or off. Total War Shogun2: Game gets to the menu screen. The background of the menu screen shows what is expected - slideshow of in-game environments rendered on high settings (this is expected). However, within 2 seconds of the menu loading up it crashes. Age of Empires 3 (Non-steam): This game is several years old so it should work on this brand new laptop fine. However the results are similar to that of Civilization V. Noticeable "Tearing" and after a few seconds it'll freeze/crash. I've done tests on all these games with both the latest stable Nvidia driver 285 as well as the nightly build 307. In addition, Nvidia control panel is set on using the dedicated graphics card for all programs. So is there anything I can do to fix this or will I have to send it back for a week to tech support?

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• GIT and Django Projects

  - by Garfonzo

  I have two servers, a Dev server and a Production server. The Production server runs a live Django site, while the Dev server has a copy of the Django project. I use the Dev server to work on the Django site, make improvements, fix bugs, etc. Once I am satisfied with how the Dev version is working, I move the whole Django directory from the Dev server and replace the same directory on the Production server. The two servers are not on the same LAN so the process is not straight forward. There are a few issues with this that I am having so far. Moving the whole directory is laborious and time consuming If I only change a few files, it is even move tedious to replace a few files than the whole directory since the project is getting fairly large and I worry that I'll miss something I often run into permission issues after I've moved things It's super inefficient, and, due to lack of time, I haven't bothered figuring out a new method. Now it's just getting out of hand and i need to address the situation. I am thinking I need to move to a GIT repository for this process. But my question is how would I set this all up? Do I host the repository on the Production server, pull from the Dev server, do work, then commit? Then I would pull from the Production server (same server the repo is hosted on) to run the current working version? Do I host the repo on the Dev Server, pulling from the same server to do work on the repo, then pull a working version onto the Production server? Should I be hosting the repo on a different server than the Production server and the Dev server (a third server)? Are there any special considerations with Django and repos that I need to worry about? Thanks for the help :)

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• Multiple Screen - Keyboard Sharing

  - by nhbdesign

  I run a small architectural firm with several drafters employed, I'm currently setting up a new office space and one of the things on top of my list is a figuring out a way to keep tabs on my drafters work and being able to collaborate in real time. Here's the challenge, they sit in a separate large cubicle room and I'm on the other end of the hallway, the way it is now; every time they’ve got some question on how to proceed on a certain design, they would come all the way to my office, I'd open their file (in read only) give some ideas, save-as new file, they go back copy paste... in short, nonsense. What I've been thinking of is to setup a hardwired solution that should enable me to have an extra monitor on my desktop which is hardwired (through KVM or something) to each of my employees workstations serving as a secondary display, so that I can watch live what they do, interact with them just as if they would have an extra keyboard and monitor in my office, except; I don’t want to have on my desk a separate monitor for each employee.. so I'd want them to be tiled on a single large screen, watching all screens alive, and whenever they ask me (or I just decide..) to step in, I just click on any tile and hurray, I'm in, editing and saving in real time on their workstation. I also want to reserve the option when I want to, to just use that monitor as just an extra screen for my workstation. Is something like that possible in 2013? P.S. I know of TeamViewer and similar internet/software based stuff, but I'm specifically looking for something solid hardwired and maintenance free, and also something that would allow to watch without my employees getting notified every time I do so (I’m not a tough boss though...).

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• How can I get (g)Vim to display the character count of the current file?

  - by OwenP

  I like to write tutorials and articles for a programming forum I frequent. This forum has a character limit per post. I've used Notepad++ in the past to write posts and it keeps a live character count in the status bar. I'm starting to use gVim more and I really don't want to go back to Notepad++ at this point, but it is very useful to have this character count. If I go over the count, I usually end up pasting the post into Notepad++ so I can see when I've trimmed enough to get by the limit. I've seen suggestions that :set ruler would help, but this only gives the character count via the current column index on the current line. This would be great if I didn't use paragraph breaks, but I'm sure you'd agree that reading several thousand characters in one paragraph is not comfortable. I read the help and thought that rulerformat would work, but after looking over the statusline format it uses I didn't see anything that gives a character count for the current buffer. I've seen that there are plugins that add this, but I'm still dipping my toes into gVim and I'm not sure I want to load random plugins before I understand what they do. I'd prefer to use something built in to vim, but if it doesn't exist it doesn't exist. What should I do to accomplish my goal? If it involves a plugin, do you use it and how well does it work?

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• Hungry hungry BIOS: why do I have less than 4 GiB of memory?

  - by Rhymoid

  I thought I had 4 GiB of memory, but just to be sure, let's ask the BIOS about that: ?: sudo dmidecode --type 20 # dmidecode 2.12 SMBIOS 2.6 present. Handle 0x000B, DMI type 20, 19 bytes Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x0007FFFFFFF Range Size: 2 GB Physical Device Handle: 0x000A Memory Array Mapped Address Handle: 0x000E Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x000D, DMI type 20, 19 bytes Memory Device Mapped Address Starting Address: 0x00080000000 Ending Address: 0x000FFFFFFFF Range Size: 2 GB Physical Device Handle: 0x000C Memory Array Mapped Address Handle: 0x000E Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Alright, 4 GiB it is. But I can't use all of it: ?: cat /proc/meminfo | head -n 1 MemTotal: 3913452 kB Somehow, somewhere, I lost 274 MiB. Where did 6% of my memory go? Now I know the address ranges in DMI are incorrect, because the ACPI memory map reports usable ranges well beyond the ending address of the second memory module: ?: dmesg | grep -E "BIOS-e820: .* usable" [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009e7ff] usable [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000dee7bfff] usable [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x0000000117ffffff] usable I get pretty much the same info from /proc/iomem (except for the 4 kiB hole 0x000-0xFFF), which also shows that the kernel only accounts for less than 8 MiB. I guess 0x00000000-0x7FFFFFFF is indeed mapped to the first memory module, and 0x80000000-0xDFFFFFFF to part of the second memory module (a bunch of ACPI NVS things live between 0xDEE7C000 and 0xDEF30FFF, and the remaining 16-something MiB of that range are just 'reserved'). I guess the highest 0x18000000 bytes of the second memory module are mapped above the 4 GiB mark. But even then, there are two problems: 128 MiB (0x08000000 bytes, living somewhere between 0xE0000000 and 0xFFFFFFFF) are still completely unaccounted for. To note, my graphics card is on PCI-Express and (allegedly) has 1 GiB dedicated memory, so that shouldn't be the culprit. Did the BIOS screw up in moving the memory, leaving it partially shadowed by MMIO? Even with this mediocre explanation, I only 'found' 128 MiB. But /proc/meminfo is reporting a much larger deficit; where's the other 146 MiB? How does Linux count MemTotal?

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• Google Sites (via Apps) setup questions

  - by Dave

  I thought that it would be a piece of cake to set up a Google site via Google Apps, but perhaps my previous (limited) experience with web development has given me unrealistic expectations. I have actually had a really tough time finding help with the exact question that I have, which is: How do I change the home page contents??? You see, I'm used to having hosting with someone like GoDaddy, where I can just ftp in and drop my HTML files in the www folder. From research I have found that this is simply not possible with any flavor of Google Sites. That's fine, I can live with it. So let's say I have www.mydomain.com. When I hit that URL, it redirects me to a very long URL (unfortunately) like https://sites.google.com/a/mydomain.com/sites/system/app/pages/meta/domainWelcome, which just says: Google Apps Welcome to mydomain.com If you are the domain administrator get started creating your home page with Google Sites Great! I want to do that. So I click on the "If you are the..." link and end up at a screen where I can choose a template, a name, and some visibility options. If I click on My Sites, there isn't a "default" site, i.e. the one that www.mydomain.com displays. I figured that maybe I just have to create a site first, so I went ahead and did that. My first test was to create a site that was publicly accessible. I thought that maybe if I did that, the Google would decide that this must be my home page since it's the only one. But it doesn't, and I still get the "Welcome to" page. Under "More Actions", I didn't see anything interesting except for "Manage site". I went in there and had a peek around, and didn't see anything about using this as the default home page. Am I looking for something that just doesn't exist? I can't believe there isn't a way to modify the "domain welcome to" page...

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• Inexpensive (used) hardware for Xen virtualization test?

  - by Jason Antman

  Virtualization is one of the areas where I could really use some experience. I also run quite a few services (web, mail, dns, etc.) out of my home. Since most of my hardware is getting a bit old (I'm running on stuff that was surplused years ago...) I decided that it's about time I start renewing some things, and also play around with virtualization a bit more. My plan is to setup a SAN box (simple iSCSI target, relatively inexpensive gigE switch), get a pair (for starters) of new servers, and start building some new stuff with Xen, specifically planning on playing with live migration and full virtualization. Does anyone have recommendations for used, older "servers" (really anything in a rack-mount form factor, I'm not too worried about things like iLO/iLOM for the test nodes) that support VT-x/AMD-V? I'm biased to HP, but it looks like they didn't make Proliants with VT-x/Vanderpool processors until G6 (for the DL360) or so, which is way out of my price range. I'm looking in the sub-$300 range (or less, if possible), used, probably Ebay. Any recommendations are greatly appreciated. Edit:And, to catch this before the comments start coming - these are personal systems. I have first-generation Proliants still in use (I got them as corporate surplus in 05, they've been running since then, and probably were running since 01 or 02 prior to being sold). I don't need anything shiny and new - I've got a bunch of old boxes, at least one complete replacement for every model in use, and that's fine for me (and easy on the wallet).

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• Create a wifi hotspot in a place where an authentication is required [closed]

  - by SoftTimur

  I live in a residence where Internet is provided via cable. Once the computer is connected to the cable, launching a browser will trigger an authentication, I have a username and password to enter, then the internet will be connected. With a gateway (e.g. Wireless Cable Voice Gateway Model CBVG834G) and 2 cables, two PCs can connect to the Internet with my account at the same time. Now the question is, I don't like the cable, and would like to create a wifi hotspot. It seems realizable with the same gateway. According to the instruction on page 2-4 of the manual: Enter http://192.168.0.1 in the address field of your Internet browser. Log in to the gateway with either of the default user names, MSO or admin... However, trying to open 192.168.0.1 gives me an error on the browser. Does anyone know what happened? Is it due to the authentication required by my residence? Is there any other way to build a hotspot of wifi? PS: My system is MAC OS

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• Can I split one ethernet line coming out of my wall into multiple separate lines?

  - by Burteçin 'Turk' Sapta

  Hi all and thanks in advance. I'll start with some background. I live in an apartment which provides internet service included in the rent. They use company called pavlov for the internet http://pavlovmedia.net/ wireless seems to be working fine but wired connection is at least %30 faster. Ethernet, cat5 outlet is built in the wall, and there is only 1 outlet in each room. I would like to take this 1 outlet coming out the wall and multiply it into 4 wires, for desktop, playstation, tv and laptop without loosing any internet bandwidth. i have absolutely no idea weather this line is coming from a switch or a router but i have been researching Ethernet splitter, routers, switches, hubs and haven't found a solid answer. what is the best solution for me? thank you once again! EDIT: ok this picture cleared few things http://www.home-network-help.com/images/home-network-expanded.jpg so seems that an ethernet switch is to ethernet as a USB hub is to USB. what is really 10/100Mbps Network Switch and what is the cap?

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• VMworkstation Windows 7 vm from physical partition?

  - by rich

  Hi All, i have a machine with 2 disks. my secondary drive has two partitions, one of which is a windows 7 64 boot partition. I have VM workstation and i would like to make a VM from the physical partition (described above). Ideally this would boot from the live disk, but if i can make a vmdk from the two partitions on the secondary drive that would be fine. 1 issue is the drive is 140gig raptor of which the two partitions i want are 40g and 30g partitions. the rest of the space is unallocated. So if i make a vmdk i really need it to be fixed at say 80 gig. I have converter but i don't understand how i can make the vmdk using this... specs Drive 1: this drive is a 120 SSD, running the host OS (Windows 7 64bit) - i've got 95 gigs free on this Drive 2: 140 gig raptor, partition 1 40g is also a windows 7 64bit install, partition 2 is 35 gig with program files folder on it.. sorta of needed to get the vm to work. There is 65gig unallocated on this disk. Drive 1 will host drive 2 as a VM.. my hope.

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• Using Google Voice with an internal SIP Server

  - by BHelman

  Let me be upfront and say first that I am new to the entire details of VoIP. My former understanding was just the extent of Skype. Don't worry, I understand a lot more of it now. The situation is this. I have a Google number that is actually very close to the area in which I live. It's convenient as it is not long distance for everyone. I love its features and etc, but I want it to forward to a VoIP phone, which will be my residential phone. Obviously, Google does not allow forwarding calls to domains (yet). So I use SIPGate with a SIPGate number to forward to a softphone for now. I can configure a VoIP phone to interact with my account easily enough. The problem lies with SIPGate itself really. Google Voice gives free unlimited inbound and outbound calling. SIPGate charges you for outbound. So a VoIP phone would work, but I could never make a call on it (for free). So let's say I setup an Asterisk server, or any other SIP server. What is the best way to go about linking my server to Google Voice? I looked into IPKall but it only specifies inbound calling and not outbound. Or is that just assumed? Does an SIP server handle outbound calling by itself?

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• Can I host multiple sites with one Amazon EC2 instance [duplicate]

  - by user22

  This question already has an answer here: Can you help me with my capacity planning? 2 answers I currently have VPS server and I pay around $75 per month and I get: 40GB HD 2Gb RAM 100GB BW 6 core cpu (but i dont use much) I have only one live website running and traffic is only max 100 user visit per day. I mostly do the my testing stuff and some of my inter sites for playing with coding. But I do need one server. I am thinking of moving to Amazon EC2 if the price diff is not so much because then I can learn some more stuff. I am thinking of getting the 3 years Heavy utilization Reserved instance because my server will be running all day and night. I tried their online caluclator with Medium Instance Heavy reserved for 3 years for EC2 it comes $31 per month(effective price) and for EBS and S3 , I think even if thats it $40 for all other stuff. I will be at no loss for what I am getting at present. Am i correct or I missed something?? Now In my current VPS I have Apache for PHP sites and MOD wsgi for python sites. I am not sure if I will be able to do all that stuff in Amazon EC2. Can I host python and PHP sites both in Amazon EC2 instance using Named Virtual Hosts and Ngnix

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• Can't reach server without proxy (website down from my home)

  - by user2128576

  I have a website hosted on Hostinger However I am experiencing problems with my wordpress site. This is really annoying. If I understood the situation right, The server is blocking me or denying access to my own website. When I visit the site with google chrome, it returns: Oops! Google Chrome could not find Same thing happens to firefox! Firefox can't find the server but when I do a check if my site is online and working through http://www.downforeveryoneorjustme.com/ it says that the site is working and up. Another thing, I access the website through a proxy, both on chrome and in firefox, and t works. Why is this? I have also recently installed the plugin Better Wp Security 5 days ago. Could the plugin have caused it? but I don't remember setting any IP's to be blocked. Also, this happens at random times, sometimes I can access it, sometimes it fails to reach the server. I am currently developing the site live. Was I blocked by the server for frequently refreshing the page? (duh, I'm a developer and I need to refresh to see changes.) or is this a problem with my ISP's DNS server? How can I resolve? and what are the possible fixes? Thanks in advance! -Jomar

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• ZFS Data Loss Scenarios

  - by Obtuse

  I'm looking toward building a largish ZFS Pool (150TB+), and I'd like to hear people experiences about data loss scenarios due to failed hardware, in particular, distinguishing between instances where just some data is lost vs. the whole filesystem (of if there even is such a distinction in ZFS). For example: let's say a vdev is lost due to a failure like an external drive enclosure losing power, or a controller card failing. From what I've read the pool should go into a faulted mode, but if the vdev is returned the pool should recover? or not? or if the vdev is partially damaged, does one lose the whole pool, some files, etc.? What happens if a ZIL device fails? Or just one of several ZILs? Truly any and all anecdotes or hypothetical scenarios backed by deep technical knowledge are appreciated! Thanks! Update: We're doing this on the cheap since we are a small business (9 people or so) but we generate a fair amount of imaging data. The data is mostly smallish files, by my count about 500k files per TB. The data is important but not uber-critical. We are planning to use the ZFS pool to mirror 48TB "live" data array (in use for 3 years or so), and use the the rest of the storage for 'archived' data. The pool will be shared using NFS. The rack is supposedly on a building backup generator line, and we have two APC UPSes capable of powering the rack at full load for 5 mins or so.

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• Understanding CNAME in displaydns

  - by dublintech

  On windows, I do ipconfig /displaydns One record is: na4.salesforce.com ---------------------------------------- Record Name . . . . . : na4.salesforce.com Record Type . . . . . : 5 Time To Live . . . . : 8 Data Length . . . . . : 8 Section . . . . . . . : Answer CNAME Record . . . . : na4-was.salesforce.com I see not IP for it. How does windows resolve the IP for this then? Note: there is no other entry for na-4-was.salesforce.com. Thanks,

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