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• where to look for computer technician jobs

  - by Kareem

  Hi I am currently studying for the A+ certification, I plan to have it by the end of this month and I plan to go for farther education. I’ve built two high end computers by myself for a friend and family member. Install OS and everything. I’m looking in to finding either a computer assembly or computer technician job . Where is the best place to look for one? I’ve looked in to best buy but I find their geek squad to be a little bit shady. Where is a good place to look for a full time entry level computer technician job just starting out in Tampa, FL?

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• Connect two subnets without router

  - by Shcheklein

  I got two Comcast routers with two different subnets on each. Every subnet contains 5 static IPs. Two questions: Are there any problems if both routers and machines from both subnets are connected into one switch? Security issues doesn't matter there. I need to know if there are some performance or other problems. Is it possible to make machines from different subnets to see each other if they all are connected into one switch? Some static routing, add ARP records or somethig else ... I just want to avoid configuring second ethernet adaptors, third router or something. And I need to connect these subnets vai high-speed local network.

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• Tomato QoS: Why is some traffic unclassified when there are classifications for it?

  - by Armitage

  Ok, I am trying to tweak my router to give priority to some traffic. My classifications seem to cover just about everything but I still see ~60 to ~80% of the traffic as unclassified: TCP 192.168.1.100 64137 192.168.1.1 80 Unclassified TCP 192.168.1.100 64175 192.168.1.1 80 Unclassified TCP 192.168.1.100 64144 192.168.1.1 443 Unclassified I assume that the 64### ports are just what my WAP uses to send packets inside my home network. But my classifications seems to cover any traffic for destination ports 80 and 443: (partial list) TCP Dst Port: 80,443 High WWW TCP/UDP Dst Port: 1024-65535 Lowest Bulk Traffic Why do I have so much unclassified traffic if I have a classification that should cover it?

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• Upgrading my Active Directory domain from Server 2003 to Server 2008 R2

  - by drpcken

  We are currently a single domain on a single network running Server 2003 Standard and Exchange 2007. I have a new server up and running (added to the domain already) with Server 2008 R2 on it. I want this to become my Primary Domain Controller, thus replacing my old Server 2003 server. I know I should just be able to run dcpromo on the new server, then decomission my old server, and raise my domain functional level to match the 2008 server. My only concern is the Exchange 2007 server. Is there anything I need to know relevant to it before I start? Thanks!

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• Nearest PC equivalent to Mac Target Disk Mode?

  - by username

  Mac firmware has a special boot mode that allows you to offer its internal hdd to another computer as an external disk (you just connect the two machines via an IEEE 1394 cable). Only the second machine needs a functioning OS installed. Any good suggestions for something similar on the PC side of things? Block level access isn't important to me, I'd just like to be able to copy files off it. It doesn't matter to me if it uses Ethernet, IEEE 1394, or wifi - I just like having a quick way to access files on a client PC. Is there any single-purpose Linux distro specially designed to do this? It'd be nice to have something super simple, quickbooting, and small that I could install on a USB drive. I used to use Knoppix, but it's overkill as a Target Mode replacement.

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• What is the most economic hardware that will run Ubuntu? [closed]

  - by nbolton

  I'm looking to buy the cheapest hardware I can find that will run the latest version of Ubuntu desktop on some sort of usable level (e.g. use of web browser, flash, etc). I guess small form factor would be pretty convenient, so I was looking at Acer Aspire Revo for example, but I'm not sure whether or not it's overpriced. I'd rather pay less for the same thing minus brand name if it's available. Any ideas? On further investigation, it seems I'm looking for a nettop.

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

  - by BCS

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

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• Hosted Kerio Mailserver vs. Hosted Exchange

  - by Dayton Brown

  Hi all, I'm in the beginning stages of migrating from an internal exchange server (2003) to external hosted services. We don't have a huge user base, less than 100, but we need to support BlackBerries, iPhones, Outlook RPC/HTTP, etc. I really like exchange hosted providers (I've used intermedia in the past) but pricing is a bit high. Does anyone have any experience with Kerio? It looks great, but I'd like to hear some unbiased opinions. Or biased if you are really happy working for a particular hosting company ;-)

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• CentOS listen to everything on the wire

  - by Poni

  I know there's a native command on linux that will output (to stdout) every "event" related to a certain network interface (be it eth0 etc'). Like there's tail -f <file> to listen on file changes.. I just can't find it. I want to see all events, incoming packets, even dropped ones. At lowest level possible. In every protocol (TCP, UDP etc'). I think WireShark is a bit too big for this as I need something very simple just to see the events, it's for testing. What's the command?

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• My server is running out of memory, despite having all swap free

  - by Biohazard

  I am using Debian 6 (Squeeze). The server has 4gb of memory in it, and 8gb of swap. I'm starting to get memory alloc errors at high application load times, but from top command: Mem: 4055944k total, 3915436k used, 140508k free, 10444k buffers Swap: 7999480k total, 0k used, 7999480k free, 3604496k cached The system isn't even trying to use the swap? Why would this be happening? I would like to upgrade the primary memory, but this isn't possible just right now. Thanks.

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• How to add timestamp to the logfilename with the apache log4j

  - by swati

  Hello Everyone, I am new to using apache logger . I have downloaded the log4j-xx and i have the following text configuration file # Set root logger level to DEBUG and its only appender to mainFormat. log4j.rootLogger = TRACE, mainFormat, FILE # mainFormat is set to be a ConsoleAppender. log4j.appender.mainFormat=org.apache.log4j.ConsoleAppender # mainFormat uses PatternLayout. log4j.appender.mainFormat.layout=org.apache.log4j.PatternLayout log4j.appender.mainFormat.layout.ConversionPattern=%d [%t] %-5p %c - %m%n #File makes a file of the output. log4j.appender.FILE=org.apache.log4j.FileAppender log4j.appender.FILE.File=log4j_HAPR001_OutputFile.log log4j.appender.FILE.layout=org.apache.log4j.PatternLayout log4j.appender.FILE.layout.ConversionPattern=%d [%t] %-5p %c - %m%n i use the above config file to create the log file. Now i wanted to add the current time stamp to the log file. Is there any way to do this. If yes can some one please give me the instructions how to do. Thanks in advance. Regards, Swati

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• dead man's switch for remote networking interventions

  - by ascobol

  Hi, As I'm going to change the network configuration of a remote server, I was thinking of some security mechanisms to protect me from accidentally loosing control on the server. The level-0 protection I'm using is a scheduled system reboot: # at now+x minutes > reboot > ctrl+D where x is the delay before reboot. While this works relatevly well for very simple tasks like playing with iptables this method has at least two drawbacks: It's not very reactive, ie a connectivity problem should be detected automatically if for example an automatic remote ssh command fails does not work anymore for x seconds. It can obviously not work if one need to modify some configuration files and then reboot to test the changes. Are you guys using some tool for the second point ? I would love to have something able to revert the system configuration in a previously known stable state if I can't join the server X minutes after reboot. Thanks!

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• download speed is fast but transfer rate is slow

  - by Ieyasu Sawada

  I've just changed ISP and I'm pretty disappointed with the transfer rate. My previous connection has a download speed of 1.08 Mb/s as seen from this site: http://speedtest.net and the download transfer rate is about 100kb/s for sites that doesn't limit their bandwidth. Now my connection has about 2Mb/s download speed but the transfer rate is dancing from 20-50kb/s . I was expecting a speed much higher than this because of the download speed that I'm getting when I'm testing. The question is what's the difference between transfer rate and download speed, is it normal to have a high download speed but low transfer rate, should the download speed be proportional to the transfer rate?

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• USB microphone very quiet in Windows 7 64bit [migrated]

  - by Brian Harris

  My microphone input is very quiet. I record my voice and the recording comes out very faint. I can barely see the level indicator move when I'm 4 inches away, only when I'm 0.5 inches away does it pick up well enough. Motherboard: P8Z68-V Windows 7 64bit Mic: http://www.amazon.com/Logitech-Desktop-Microphone-Black-Silver/dp/B00009EHJV/ I've been searching the net and lots of people have this problem but I don't see any solutions that work. Maybe this isn't the best forum for a question like this, if not then let me know.

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• Nexus One USB freezes Vista SP2 Quad Core

  - by user25479

  My Nexus One (N1) will occasionally freeze my Vista 32bit SP2 Quad Core 2.4GHz during POST. MB is ASUS P5N-E SLI with 4GB of RAM. The PC will be booting and when I connect the N1 via USB, the boot sequence will freeze, then continue once I unplug the N1 USB link. It happens whether the N1 is in USB debugging mode and when it is not. I'm not sure whether this is an N1 hw/fw issue, system interaction with my PC, or a result of my N1 development environment (I'm using the Eclipse Galileo IDE for Java Developers, primarily compiling to API Level 7. Eclipse has also occasionally frozen although I haven't established N1 USB cause-and-effect on that issue). Is anyone else experiencing these symptom?

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• Sound stopped working on Toshiba Satelite C855

  - by Eric Wilson

  I have a Toshiba Satallite C855 running Windows 7 with a Realtek High Definition Audio card. Sound worked fine yesterday. Today, my two-year old did something to the machine, and I have no sound. I have adjusted sound through the icon in the lower right corner, and using the Fn keys. I have rebooted. I've verified that there are no external speakers plugged in to the laptop. It seems that this model does not have an external volume control. (If it does I can't find it.) Any ideas?

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• Postgres error messages in Apache error log

  - by Warren Pena

  I'm running Apache 2.2, PHP 5.2, and Postgres 8.2 on Windows, and I'm seeing something funky in Apache's error.log file. Occasionally, I'll see the message "row number -1 is out of range 0..-1" pop up over and over. Unlike all the other lines in that log file, there's no timestamp or log level. Just that exact string. Googling around, it appears that message is, character for character, a common Postgres error message, but is not an Apache error. I've seen it happen multiple times, and on several different servers. I can't seem to reproduce it, though. I've tried throwing all sorts of error ridden database queries and result set inquiries at Postgres via PHP, and none of them seem to trigger that line being written to the log file. Is it possible for Postgres errors to be ending up in my Apache log file, and if so, how? What would trigger an error message like that? Thanks!

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• How to create a chained differencing disk of another differencing disk in Virtual Box?

  - by WooYek

  How to create a differencing disk (a chained one) from a disk that is already a differencing image? I would like to have: W2008 (base immutable) - W2008+SQL2008 (differencing, with SQL installed) --- This I can do. - W2008+SQL2008+SharePoint (chained differencing with Sharepoint installed on top of SQL2008) There's some info about it the manual: http://www.virtualbox.org/manual/ch05.html#diffimages Differencing images can be chained. If another differencing image is created for a virtual disk that already has a differencing image, then it becomes a "grandchild" of the original parent. The first differencing image then becomes read-only as well, and write operations only go to the second-level differencing image. When reading from the virtual disk, VirtualBox needs to look into the second differencing image first, then into the first if the sector was not found, and then into the original image.* I don't get it...

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• Is it possible (and safe/reliable/non-damaging) to use a 20-pin ATX PSU with a 24-pin ATX motherboar

  - by Legooolas

  I have a reasonably-decent old 20-pin PSU which I want to use on a newer 24-pin ATX motherboard. I see that the ATX page on wikipedia mentions that 24-pin ATX is backward-compatible, and I can find 20-to-24 pin adapters to buy for a couple of dollars/pounds at lots of places, but I can't find any mention of restrictions on the use of these. Will this work on any motherboard, or is it a per-motherboard compatibility question? Are there any other restrictions like the level of power available (and hence the additional 4 pins with +12, +5 and +3.3V lines which are already on other pins)?

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• Winxp system context menus blank after last security update

  - by Peter Rowell

  Because of a CERT advisory of several out-of-band security updates released by MS I did a Critical Updates pass on my WinXP Pro SP3 machine. I now have the situation where it seems that all of my WinXP-generated menus come up with all items black. If I wave the cursor over the menu, the items will update as they become active (go blue) and then update correctly (to black-text-on-white-background) as they go non-active. Separators (which never get a hover event) stay black. App-level context menus seem to work fine (Firefox, OpenOffice, etc.) with the exception of Windows Explorer and Internet Explorer, which both exhibit this behavior on both their context menus and on their menu bar drop down menus. I'm assuming that's true because they are all using the same library code. Thoughts? Fixes? Help!

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• vCenter Server: This host currently has no management network redundancy

  - by goober

  Background I'm on a new VMWare install consisting of: 1 vCenter Server (containing inventory service, SSO, vCenter server, and web client server) 2 ESX Servers configured in a HA group Problem When a I view the summary for any one of my servers, I receive a notice: "" This is expected in our scenario and we're okay with it. Attempted Solutions As I understand from this article and this discussion, the proper way to remove the error message is to ignore it via setting the "das.ignoreRedundantNetWarning" propery to "true". I took the following steps: Logged into vCenter Right-clicked on my HA cluster and chose "Edit Settings..." Clicked "vSphere HA" section Clicked "Advanced Options..." Added the "das.ignoreRedundantNetWarning" option with a value of "true". Question How do I get this error to go away, and are there any reasons why adding this option may not have worked? References Network redundancy message when configuring VMware High Availability in vCenter Server [VMWare KnowledgeBase] How remove a notice " has no management network redundant" [VMWare Community]

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• How can I make WinXP bind to ports other than 1025-5000 for outgoing TCP connections?

  - by Chris Dolan

  (I originally posted a similar question on StackOverflow but readers recommended I post here instead) When you create outgoing TCP connections, most applications let the operating system choose which port to use. Most OSes use the IANA recommended dynamic port range of 49152-65535 for this purpose. But in Windows 2003 and earlier (including XP) Microsoft uses ports 1025-5000. Microsoft lets you change the high end of this range via the MaxUserPort TcpIP registry setting, but I see no way to change the low end. I need to have port 4160 free for incoming connections and on rare occasions an outgoing connection steals that port from me before I bind that port.

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• Properly Hosting Multiple Sites on VDS

  - by Aristotle

  I'm going to be moving about 7-10 websites (5-8 with Databases - MySQL) onto our new Virtual Private Server. I'm curious what the best way to host many sites on a single server is though. Do I create a directory for each site immediately within my root directory, and then point the domain names for each site to http://123.123.123.123/siteDirectory - or is there a more appropriate way to do this? I'm very interested in maintining control over how many concurent connections each site can have at any given time - would I be able to do that on the directory-level, or am I required to limit the concurrent-connections to the VPS itself?

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• Unable to mount portable hard drive on Ubuntu

  - by VoY

  My portable hard drive (WD My Passport), which used to work correctly now does not automount on my Ubuntu system. It does work on a Windows machine or even when plugged into WD HD TV, which is a Linux based device. There's one NTFS partition spanning the whole drive. When I plug the disk in, I see the following in dmesg: [269259.504631] usb 1-2.2: new high speed USB device using ehci_hcd and address 20 [269259.604674] usb 1-2.2: configuration #1 chosen from 1 choice However it does not mount in GNOME and I don't see it when I type: sudo fdisk -l Any suggestions why this might be? I repaired the partition using chkdsk on Windows, so the issue is probably not filesystem related.

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• Dealing with different usernames when mounting removable media in Linux

  - by dimatura

  I have a laptop in which my username is, say, "foo". I have an external drive, formatted with Ext4, for which all files are owned by "foo" (at a filesystem level). Now, I have a desktop in which my username is, say, "bar". If I mount this external drive in this computer the files are considered to not be owned by "bar". This makes sense, but it is annoying because their bits mode are set so that only the owner can modify/delete them. What's the cleanest way to deal with this? Create a group with "foo" and "bar" and add group modification permissions?

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