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• How to delete/detect what terminal software I have?

  - by Mike G

  On mac osx terminal, I installed many terminal programs while trying to install a programming library. Now I'm wondering how I delete them. I think some of them include pip, macports, vmenven (or something). I'm not sure what these programs are called but they all are called from the command line using something like "macports..." (so I'm calling them terminal programs). First, how do I tell what terminal programs are installed. Second, how do I delete them. And, to be through, where are the programs stored anyway?

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• Using Zebra LP 2844-Z over the network

  - by Jason Kealey

  Hello, I am looking for a network-based label printer. I am looking at this Zebra LP-2844-Z printer. Unfortunately, it does not come with a network interface like the lower-end LP 2824 Plus. The ZebraNet 10/100 Print Server is both expensive for what it does (~$600) and only seems to support wireless networking, not wired. I prefer wired for reliability. Questions: Can I use a cheaper off-the-shelf print server to turn the LP-2844Z to a network printer. Would I get any trouble communicating with the printer via its own programming language or via OPOS? (instead of the Windows driver) Are cheaper print servers reliable? Would I be better to get another printer model that has it built in directly to avoid having issues due to the print server? What other printer would you recommend?

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• Looking for detailed Instructions on building a DIY NAS

  - by Kaushik Gopal

  I'm looking for good links with detailed instructions on how to build a DIY NAS (Network Access Storage). I'm planning on doing it cheap (old PC config + open source software). I did a fair bit of searching and found these links (so please suggest others). While these links are great they delve more on the hardware side. I'm looking for more instructions in the software side. Ubuntu Setting up a Home NAS DIY NAS Smackdown How to Configure an $80 File Server in 45 Minutes FreeNAS Build a NAS Device With an Old PC and Free Software Build Your Own NAS Device

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• RAMDiskVE keeps causing computer to freeze

  - by Steph

  I found this in the Event Viewer logs: The description for Event ID 11 from source RAMDiskVE cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer. Which doesn't say much. The details don't reveal much more: Failed to read configuration information from registry. 0000000002002C00000000000B0007C0000000000000000000000000000000000000000000000000 So my question is, what is RAMDiskVE and what device is it for? Basically I'm trying to rule out hardware but I have no idea what's failing...

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• program for drawing diagrams

  - by ldigas

  I need to draw a few diagrams that describe the working of some smaller programs (nothing real, but some exercise to illustrate some points). They're supposed to be 'old kind' diagrams, like you remember from the "old school of programming" - I gather some users here will know what I mean. And it's be good if they have ready blocks for program units, IF conditions, FOR/DO loops and such ... So, anyone knows of an application for such ? (I've tried Visio which I have on my work machine (for whatever reason ... I sure didn't put it there) ... but it is "too visual" for this kinda thing ... I just want to draw a few simple black on white diagrams ... nothing special or in colours).

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• Install Windows Server 2008 Core on a Dell Optiplex 790

  - by Alex Marshall

  Does anybody have experience installing Windows Server 2008 Core on a Dell Optiplex 790? When I connect to the machine with the Hyper-V Manager Administrator snap-in, and try to create and run a virtual machine, I get the error "The Virtual Machine could not be started because the hypervisor is not running". I've disabled the Execute Disable functionality in the BIOS as was requried for other Dell models, but no matter what combination of security and virtualization settings I use on the machine, I can't get this working. EDIT: I've installed Windows Server 2008 Core on a Dell Optiplex 790, and I'm trying to install and setup a guest VM on the Hypervisor EDIT 2: The Hyper-V role is installed and configured, without any errors in the event log. Hardware-assisted virtualization is also enabled.

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• Errors reported by "powercfg -energy"

  - by Tim

  Running "powercfg -energy" under Windows 7 command line, I received a report with following three errors: System Availability Requests:Away Mode Request The program has made a request to enable Away Mode. Requesting Process \Device\HarddiskVolume2\Program Files\Windows Media Player\wmpnetwk.exe CPU Utilization:Processor utilization is high The average processor utilization during the trace was high. The system will consume less power when the average processor utilization is very low. Review processor utilization for individual processes to determine which applications and services contribute the most to total processor utilization. Average Utilization (%) 49.25 Platform Power Management Capabilities:PCI Express Active-State Power Management (ASPM) Disabled PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer. I was wondering for the first error, what does "enable away mode" mean? for the second, what utilization percentage of CPU is reasonable? for the third, what is "PCI Express Active-State Power Management (ASPM)"? How I can correct the three errors? Thanks and regards!

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• Using DD for disk cloning

  - by roe

  There's been a number of questions regarding disk cloning tools (yes, I did search for it) :) and dd has been suggested at least once. I've already considered using dd myself, mainly because ease of use, and that it's readily available on pretty much all run of the mill bootable linux distributions. To my question, what is the best way to use dd for cloning a disk. I don't have much time to go around, and no test-hardware to play with, so I need to be prepared, and it's pretty much a one-shoot chance to get it done. I did a quick google search, and the first result was an apparent failed attempt. Is there anything I need to do after using dd, i.e. is there anything that CAN'T be read using dd? Thanks!

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• Which Single Source Publishing tools and strategies are available?

  - by Another Registered User

  I'm about to write a 1000-Pages Documentation about a huge programming framework. The goal is to bring this documentation online into an web platform, so that online users can search through it and read it online. At the same time, the text has to be made public in PDF format for download. And at the same time, the whole thing needs to go into a printed book as well (print on demand, they want a giant PDF file with the whole book). The PDF files: The whole content is divided into several chapters. Every chapter will be available as a standalone PDF eBook. And finally, all chapters will be available in one huge printed book. Is LaTeX capable for something like that? Can it be used for Single Source Publishing? Or would I have to take a look at other technologies like DocBook, etc.?

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• Doubts about Cloud Infrastructure

  - by Pravin

  Maybe a little more of the same questions that others have asked but wanted to clarify my doubt, for some years run my hosting company (reseller of esds) and I've done well so far, but I am determined to bring quality and server technology to offer another level. So far I have understood that there is a difference between cloud and cluster servers because the cluster function as load balancers that distribute in different servers roles and use the servers less overloaded in the cloud is the union of multiple servers and then the same is vitualized unlike the cluster that is allowed to use the resources of the CPU and RAM servers in the virtualized environment. My approach is to use 3 dedicated servers to create a cloud server, My doubts: Does this type of cloud servers are only reserved for big companies? (Either because the union of the servers is done by hardware or software with high price) What characteristics should these servers meet? Possibly through software which should be used? Available? Thanks for your time, Cheers!

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• PEN daemon as load balancer, IIS web logs not showing true requester IPs

  - by Aszurom

  I have a Hercules vmware appliance, which is a micro-linux vm that runs the PEN daemon and acts as a server load-balancer. It takes any incoming request on the appliance's IP and routes it out to a number of alternate IPs. The logs of the daemon show the true IP of the browsers hitting the website. The logs of the websites themselves (iis 6 and 7) only show the requester IP as being that of the load balancer. The IT manager tells me that when we had a hardware appliance (serveriron XL) doing the load balancing, the web logs reflected the requester IPs accurately. Is there any way to get this resolved with the daemon, or will I be digging that out of the closet and plugging it back in?

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• pfSense + DDoS Protection

  - by Jeremy

  I run a gaming community on a colo with a 100Mbps port. I want to buy a very cheap 35 dollar server with the same 100Mbps port, and run pfSense to use as a hardware firewall. I'm dealing with a bunch of 14 year old kids that have access to botnets, so it can become a bit necessary to get something like this. My overall question, is using pfSense on a cheap identical datacenter/port speed server worth it to actually block DDoS attacks? A bit more into detail since I assume you will ask this, the attacks we receive are normally around 1Gbps. We currently run CentOS using CSF Firewall, and even when using a software firewall, we block 500Mbps UDP floods, or just generic attacks pretty easily. Thanks, - Necro

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• How to watch 3D on Acer "3D Ready" projector?

  - by glenneroo

  We have here a Acer P1200 DLP projector which is "3D Ready" (using the BrilliantColor™ DarkChip™ 3) and documentation was not included in the packaging. We don't have a Blu-ray player and have no intention of purchasing one in the near future so I'm looking for a way to view encoded or streamed content. My question is: How is it possible to watch 3D content? What extra hardware/software will I need? EDIT: Found this information in the user manual: DLP 3D function: Choose while using DLP 3D glasses, quad buffer (NVIDIA/ATI…) graphic card and HQFS format file or DVD with corresponding SW player. 3D Sync L/R: If you see a discrete or overlapping image while wearing DLP 3D glasses, you may need to execute "Invert" to get best match of left/ right image sequence to get the correct image (for DLP 3D). ...but I'm still at a loss. What is a quad buffer graphics card?

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• IIS seems to send email twice

  - by David Brunelle

  Hi, we have a request page in our website that send email to confirm the request. It seem that whenever this page is accessed, some (not all of them) are sent more than once at different time, sometime hours apart. The code (which is an old ASP page) looks fine as it sends only once to the recipient. So I doubt it's a programming related problem. When looking at the Exchange server, the tech told me that he seems to be receiving the request twice at different time, so the problem comes from what's between the code and Exchange. My hypothesis is that IIS seem to 'remember' the page and rerun it for some reason. Any hint on where to start? We have IIS 6 (in french if it makes any difference) with Exchange 2007. IIS is running on a Windows Server 2003 machine (virtual machine I believe) in a DMZ. I don't know about Exchange. Thank you.

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• Virtual system drive is split between separate LUNs

  - by Tigran

  My hardware VMWare guy told me that a Win2008R2 server I have has a D drive that is split between two separate LUNs. He could not tell me if that's a good thing or bad just that it's not standard practice for him. Would you please explain the benefits or drawbacks of this setup? Thanks EDIT Some additional info. What happened was I had D drive already allocated. Then I asked for more. They said there's no more space on whatever LUN my D drive is on so the option they gave me was that part of the D drive will be on one LUN and other part will be on another LUN. Hope that helps

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• Installing raid controller forces reinstall of Windows Server 2008

  - by Tyler

  So, I've tried two different RAID controllers that have external SATA connections on my Server 2008 machine. I can install the hardware, boot into Windows, install the drivers and reboot again. No problems. However, as soon as I try to use eSATA-connected drives and reboot something happens to the Windows install and I can no longer boot into Windows. I tried repairing from the command line, and the end result is that repair console tells me I have 0 Windows installations (?). I end up having no choice but to reinstall Windows to get back on track. I must be doing something fundamentally wrong here, but I don't know what :(

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• Why doesn’t windows explorer show my removable / USB drive even though the command prompt does ?

  - by Gishu

  I'm running WinXP SP2. Around 50% of the time, when I slot in my USB drive. Windows explorer refuses to show the drive. If I click on the Safely remove hardware icon on the tray, I can see a menu item for the drive - say drive G: (the light on the USB drive is also on) If I type in G: into the address bar of explorer, it says 'Cannot find...' If I type in G: into a command prompt window, it works and I can do a dir to see the list of directories on the drive. To fix this, I've to remove-reinsert the pen-drive. But doing it every day is annoying. Also this happens only on this machine.. I use this drive on my home machine and it works flawlessly each time. Can anyone suggest things that I could try ? Thanks for reading...

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• Predictive vs Least Connection Load Balancing Techniques

  - by Mani

  I have a windows based desktop application that communicates via TCP to the application servers. (windows 2003). No sticky sessions between client calls. We have exactly 2 servers to load balance and we are thinking to use a F5 hardware NLB. The application is a heavy load types, doing not much bussiness logic in the services but retrieving quite a big amount of data at most of the times. May be on an average 5000 to 10000 records at all times. Used mainly for storing and retirieving data and no special processing of data or calculations running on the server side. I am favouring 'predictive' considering my services take a while at times to return data and hence tracking the feedback would yield some better routing as in predictive. I am not sure if the given data is sufficient enough to suggest some ideas but considering these, what would be some suggestions\things to consider\best between Predictive and Least Connections ? Thanks.

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• How do partitions help in optimizing the harddrive?

  - by Fasih Khatib

  I was recently reading a guide on Tom's Hardware about how to optimize the harddrive. They listed creating partitions as one of them. They said keeping the various files seperate is a good idea as it reduces the read/write cycles required. Now my querry is: what size partitions do i make for my 500gb harddrive. Its completely blank. I will be installing WIN7 in it. My usual strategy is to divide it into two equal partitions. Is it the optimum size?

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• Where do I find a color profile for my MacBook Pro display?

  - by Jesse

  I installed Windows 7 on my MacBook Pro, overwriting OSX Lion. The screen has a blue tint due to lack of a calibrated color profile. I once used the "Color LCD" ICC profile from the OSX partition and it worked great, but I've since lost it since I decided to overwrite OSX completely. I tried the manual calibration in Windows 7 but I just can't seem to get it right like it was while using the color profile that was on the OSX partition. All Google tells me is where to find the ICC profile in OSX, and to copy it over. Do I have to reinstall OSX just for the color profile? Even if I do, where does the profile actually come from? Is it on the OSX disk, or is it somehow retrieved from the hardware itself? Is there a way to get it without reinstalling OSX? Thanks!

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• sound volume increase beyond 100% whenever possible on linux

  - by fakedrake

  Some audio output from files or streams is too low. It is obvious that hardware is able to play the same sounds but louder but because of the data it just plays it at some low level even at 100% volume. Vlc can generally increase the volume of a file up to 200%. Is there a way to do the same thing VLC does system-wide and if possible for an arbitrary v percentage value. If there is no application that does this, where should i look into for libs to do it myself or what code should i modify(eg code in the alsamixer) thank you

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• Macbook pro asks me to "Service Battery"

  - by Uwe Honekamp

  A couple of weeks ago I checked the battery and at that point in time (after 160 load cycles) it still had a capacity of 5000 mAh. Today, my 2006 macbook pro tells me via the battery menu to "Service Battery". According to Coconut Battery the current capacity is only 1590 mAh. The corresponding help text suggests contacting an Apple Authorized Service Provider (AASP) to have the computer checked. Before I decide to throw money at the AASP I'd like to understand what the AASP could possibly do to eliminate the problem. Isn't it more likely that the battery simply broke at 160 cycles and needs to be replaced? Are there any means by software or firmware to influence battery behavior? Of course, the computer hardware might be broken but how could this result in the described effect? And yes, I'm currently trying a calibration cycle but I have some doubts that it will save the day.

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• Does servers to >$1000 really have a memory limit of 4GB?

  - by Sandra

  Hi, I am looking for a server, and when I look at the specs some of the servers can only handle 4GB. Other can handle 8GB or 16GB, and others 64GB. Can that really be true? Is this really a hardware limitation, or are they disabling it in the BIOS, so there is no way to use 16GB on a 4GB supported server? An example is the Dell PowerEdge SC 440. Only 4GB supported, they say. Would Linux allow me to use 16GB on a 4GB server? Sandra

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• Win 7 move ssd from SATA 1 to SATA 0, drive letter from G: to C:

  - by GaryH

  I got a new SSD, plugged it in on my notebook to the available SATA 1 connector and installed Win7 (Ultimate) on it as drive G:. It is working great. Now I would like to move the SSD to the SATA 0 connector and change the drive letter to C:. The existing 500gb HD that has another copy of Win7 (home) on it I will format and connect to the SATA 1 connector as the G: or some other letter drive. Is this possible? Is there software that will go through the registry and "correct" all of the entries for "G:" for everything installed and fix it all up? Or am I better off biting the bullet and setting the hardware where I want it and doing a fresh install of everything? Thanx, G

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• best filesystem for an aws s3 like service

  - by gucki

  Hi! I need to build a fault tolerant, highly available key/value storage (no posix, only same functionaluty as S3) using cheap existing hardware. The storage should be able to handle several billions of items. The maximum size of items is around 1GB, most are only several KB. What's the best software/ filesystem for this task? I already had a brief look at mogilefs, mongodb (grid-fs) & glusterfs but I'm not really sure which is stable & fault tolerant enough. The simpler the setup and later expansion the better :). Corin

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