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• Detecting/Reactivating serial port that becomes inactive on Ubuntu Linux 10.10

  - by Tom

  I am using a usb2serial port to communicate with some old equipment (using my code built upon the boost asio library - I think my code is fine because it works almost all of the time). Every so often (maybe once every few days) the communication stops with my device with no error at all - the device just does not respond. I then restart my computer and everything is fine again. Does anyone know where I can start to analyse this problem? My serial port loads up fine (in /dev/ttyUSB0) and the boost library does not throw an error. The device just does not respond. If I restart the device no change - only when I restart my pc does it make a difference. I have also tried unplugging and replugging the usb connector. Does anyone know what gets cleared in the reboot (w.r.t the serial device) or what I can probe when the problem happens again (rather than just restarting with hope)

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• What is the keyboard shortcut to clear formatting on Office 2008 Mac?

  - by Laurent Bourgault-Roy

  I recently switched from a PC to a brand new Macbook Pro. I was happy to see that most of the keyboard shortcuts in Word 2008 where the same or almost the same than in Word 2007. However, there is one keyboard shortcut that I dearly miss : the clear formatting shortcut (ctrl + space on Windows). I know the feature exists since it's in the formatting bar, but I can't find the keyboard shorcut. I tried cmd + space but that is the system keyboard shortcut to switch the keyboard type. alt + space delete the text without deleting the formatting. ctrl + space doesn't seem to do anything. Does anyone know what the keyboard shortcut for the clear formatting command may be? I hope there's one because it's really painful to reach for the mouse everytime I put a title and I want to switch to a normal paragraph style...

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• I started getting a weird message "Encrypting file system - Back up your file encryption key"

  - by Ove

  I started getting a strange message when I start my computer. An icon appears in the system tray, and a popup tells me "Encrypting file system - Back up your file encryption key". I know what EFS is, but I don't use it. To my knowledge, I don't have any encrypted files on my partition. I have searched using Total Commander on all the partitions for files that have the "encrypted" attribute, but I found nothing. So I don't have any encrypted files. Does anyone know what I did to get this message?

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• Firefox or Chrome - how to force a specific encoding for a page

  - by Mike

  Hi, I am accessing an intranet site built by amateurs, that was constructed to be "best viewed by IE" (arghhh!). The site is in portuguese. All accented letters are jammed and do not appear as they should. As I create sites myself, I know that the best way to build a site in portuguese and other latin languages is to use the "charset=iso-8859-1" on the page's HTML encoding. This will ensure cross-browser and platforms compatibility. But I have no way to change this, because I am a visitor on this site. I don't know the encoding they are using. What I ask is: is there a way I can force my browser (Chrome or Firefox) to recode the page using the correct charset? I need this to work on Ubuntu.

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• Toolkit & Habits for Linux Network & System Administration [closed]

  - by slashmais

  I am tasked with the administration of a small office network as well as several workstations running mostly Debian and Ubuntu. There are two servers: one database & print-server, and one backup & file server. Being relatively new to this side of things, knowing enough to help myself to some degree on Linux, I would like to know what software tools and tasks/habits I can use/acquire to learn this field and be effective while doings so. I don't need to know what is the best, just what a newbie sys-admin can use as a starter-pack to learn and use as a base to grow into proper system administration. [edit] What I need is those few basic tools to start with, and the kind of things I need to do regularly, e.g.: which logs to check, when & what to monitor, the kind of 'right' place to start and to which I can ad as I need.

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• runas without asking for a password

  - by Gregory MOUSSAT

  On a Windows server which is in a domain, I have a script I run from scheduled tasks. I want this script to be run under a mydomain\peter user account. It is simple to do it with scheduled tasks, if you know Peter's password. And once done, the script stops when Peter decides to (or has to) change his password. On Linux, a cron job can be run with whatever user account without having to know the corresponding password. And root can run anything on behalf on another user (with su and sudo). Any way to do this with Windows? My need is for a old Windows 2003 server, but I can manage to run it from another computer.

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• TCP/IP & throughput between FreeNAS (BSD) server & other LAN machines

  - by Tim Dickerson

  I have got a question for someone that knows BSD a bit better than me that are in regards to my LAN setup at home/work here outside Chicago. I can't seem to fully optimize my network's (LAN) thoughput via my FreeNAS (BSD based) file server. It runs with the latest FreeBSD release which is modified to support several protocols for file transfers and more. Every machine that is behind my Smoothwall (Linux based) router is on the usual 192.168.0.x subnet and for most part works just fine. Behind the Smoothwall box, all machines are connected to a GB HP unmanaged switch. I host a large WISP here and have an OC-3 connection here at home/work and have no issues with downloading/uploading from/to the 'net'. My problem is with throughput. When I try and transfer large files...really any for that matter..between any of the machines to/and from the FreeNAS server via FTP, the max throughput I can achieve say between a Win 7 or a Linux box is ~65Mbit/sec. All machines are running Intel Pro 1000 GB NIC's and all cable is CAT6. Each is set to 'auto negotiation' and each shows 1500 MTU Full Duplex @1GB so I know the hardware is okay. I have not adjusted the MTU on any machine as I understand it to be pointless unless certain configurations are used (I assume I am not one of those). My settings for the FreeNAS machine are the following: # FreeNAS /etc/sysctl.conf - pertinent settings shown kern.ipc.maxsockbuf=262144 kern.ipc.nmbclusters=32768 kern.ipc.somaxconn=8192 kern.maxfiles=65536 kern.maxfilesperproc=32768 net.inet.tcp.delayed_ack=0 net.inet.tcp.inflight.enable=0 net.inet.tcp.path_mtu_discovery=0 net.inet.tcp.recvbuf_auto=1 net.inet.tcp.recvbuf_inc=524288 net.inet.tcp.recvbuf_max=16777216 net.inet.tcp.recvspace=65536 net.inet.tcp.rfc1323=1 net.inet.tcp.sendbuf_inc=16384 net.inet.tcp.sendbuf_max=16777216 net.inet.tcp.sendspace=65536 net.inet.udp.recvspace=65536 net.local.stream.recvspace=65536 net.local.stream.sendspace=65536 net.inet.tcp.hostcache.expire=1 From what I can tell, that looks to be a somewhat optimized profile for a typical BSD machine acting as a server for a LAN. I might be wrong and just wanted to find out from someone that knows BSD better than I do if indeed that is ok or if something is out of tune or what. Are there other ways I would find better for P2P file transfers? I honestly do not know what I SHOULD be looking for with respect to throughput between the NAS box and another client when xferring files via FTP, but I am told that what I get on average (40-70MB/sec) is too low for what it could be. I have thought about adding another NIC in the FreeNAS box as well as the Win7 machine and use a X-over cable via a static route, but wanted to check with someone first to see if that might be worth it or not. I don't know if doing that would bypass the HP GB switch and allow for a machine to machine xfer anyways. The FTP client I use is: Filezilla and have tried both active and passive modes with no real gain over each other. The NAS box runs ProFTPD.

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• Is there such a thing as "server sliding" (or similar), and if so, what is it?

  - by mahoke

  I am not a network engineer, but rather a translator, so I apologize in advance if this is a rather obvious question to some of you. Normally Google can answer my questions, but in this case I'm coming up blank. If I'm asking this in the wrong forum, please let me know. The text is talking about RADIUS accounting functionality. It says that when there are many (more than 200) authenticated terminals, if a command is issued to forcibly clear the terminals, "sliding to the next RADIUS accounting server may occur" -- the original text literally says "RADIUS accounting server-slide". I think I can basically understand what they are getting at in terms of meaning, but I would like to know whether this is the correct expression to use. I get the impression from my inability to find it simply by Googling that perhaps it's described differently in English.

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• Upgrade the Graphics Card for a Dell Dimension 3100

  - by Pat Foran

  Hi, I have a Dell Dimension 3100 Desktop with a 128MB Graphics Card Integrated into the Mother Board. I need to upgrade this 128MB to at least 256MB or 512MB if the system will support same. I am told by Dell that all I have is a PCIx1 slot and that they do not stock a Graphics Card for this. I was told to shop around at Amazon and ebay etc and I would find one there. I have shopped around for some time now and do not know exactly what I am looking for. There are several PCI Graphics Card out there but which one would be the correct one for a Dell Dimension 3100. Can you help me resolve this problem. If you know of a PCIx1 card that will sort out my problem you might please let me have all the details for to purchase it. Regards, Pat,

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• Asp.net hashing (using codesmith) when upgrading from .net 2.0 to 3.5

  - by user34505

  Hi, I'm administrating servers running IIS 6, hosting a website on ASP.NET 2.0. Yesterday I installed .Net framework 3.5, and all my user authentication system was lost. Users can't log in, because their password arn't getting authenticated, maybe because the hash function has changed in 3.5??? I can't really get to the code, but I know it uses an extention called CodeSmith. Do you know of any break my upgrade the 3.5 ugrade could couse? Please help. Thanks.

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• Can a web server and XBMC HTPC co exist happily?

  - by Mild Fuzz

  I have a machine that is currently dedicated to running my home theatre. It is way more powerful than it needs to be, and spec wise would have no problem running both a few websites and an HTPC What I wanted to know is that is this was a reasonable thing to expect of a single machine? 90% of the time, all it's power would be just for the web server ( and the odd torrent) Currently it's running Windows, but I am pretty sure I will have to turn it into a Linux box Will I run into any problems? Is there anything I need to know before I start? Any prerequisites? The webserver will be required to run Ruby on Rails sites mainly, but might be called upon to run PHP for Wordpress also.

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• How important is patch management?

  - by James Hill

  Problem I'm trying to sell the idea of organizational patch/update management and antivirus management to my superiors. Thus far, my proposition has been met with two responses: We haven't had any issues yet (I would add that we know of) We just don't think it's that big of a risk. Question Are there any resources available that can help me sell this idea? I've been told that 55-85% of all security related issues can be resolved by proper anti-virus and patch/update management but the individual that told me couldn't substantiate the claim. Can it be substantiated? Additional Information 1/5 of our computers (the ones on the building) have Windows update turned on by default and anti-virus installed. 4/5 of our computers are outside corporate and the users currently have full control over anti-virus and Windows updates (I know this is an issue, one step at a time).

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• Camera Canon pal DC95 not being able to get cd contents

  - by antoniocs

  Hey! A friend of mine recorded a family event with his Canon pal DC95. This camera records to a mini cd. I saw the cd being played in the camera (which was hooked up to a tv) but when I place the cd's in my pcs cd player I see nothing. Like if the cd had nothing on it. I tried downloading the manual of the camera (maybe I have to do something to the cd) but I can't find it online. I really want to get the videos on the cd so I can pass them to some other friends. Anyone know how I can achieve this? Please help me out :) Thanks. PS: Just a reminder. I know that the cd's contain stuff, but when I place the cd in the drive I just see a blank cd.

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• Using optimization to assign by preference

  - by Aarthi

  I have 100 objects ("candies") that I need to distribute between five people so that each has an equal number of candies (in this case, 20 candies per person). However, each person has also expressed their preferences of candy to me in a chart, similar to below. Top-favored candies receive 10 points, least-favored candies receive -10 points, and neutral-favored candies receive 0.5 points. I need to sort the items out so that: Each person receives the same number of candies Each person's total "satisfaction" (points) is maximized My output is a list of each person's assigned items I'm familiar with Excel's in-house Monte Carlo simulation tools (Solver, F9 diceroll, etc) and would like to stick to those tools. While I know how to set up the chart, and how to use the column summation to input into Solver, I don't know how to get it to give me the desired output. Furthermore, how do I adjust the solver so it takes into account individual preferences rather than empirical ones? To wit: how do I begin setting up this model?

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• CPU overheating after cleaning it

  - by Roberts

  I wanted to clean my computer CPU heatsink and fan itself, because the temperature is not what I wanted. About (50C ~ 70C). I have Intel Core 2 Duo E4300 @1.8 GHz (LGA775). The heatsink wasn't so scary filled with dust but I wanted to clean it anyway. I didn't know how to get heatsink with fan from the socket. So after 25 minutes I've figured it out. But I didn't know how to get it back on so I spent a lot time getting out the motherboard from the case. The fan and heatsink... The case and all components are clear of dust. (I'm tired now). Then I put all back just the way it was, well did few things on cable management. But the problem was that I didn't know how to connect front audio connectors. I had Windows XP hibernated. So I started the PC and everything was normal, except CMOS memory was clear. I configured the BIOS just the way it was and while I was doing that I saw about 58C CPU temperature and fan at 1789 RPM. Restarted the computer with new settings applied. But Windows halted with Blue Screen (I forgot what error it was but something with KERNEL). Restarted the PC and deleted hibernation session and everything was back normal. But couldn't record any sound from front panel microphone. The problem was that I messed ground wire with mic. Again after fixing it I turned computer on. No problems. The fan currently is noisy and temperature was 78C. The temperature before was 55C - 60C at idle. Now it's about 60C. If I do something then temperature raises to 79C. While speaking in skype the temperature was 82C. Could this problem occur because of the thermal grease (it's old and never replaced)? Edit The problem wasn't in thermal paste (because I didn't touch it). The problem was that I installed heatsink wrong. Now instead of regular 60C CPU temperature the CPU is at 48C (cool).

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• xDebug on Zend Server CE under Windows XP

  - by Hippyjim

  I have Zend Server installed on my Windows XP development machine, installed when I was naive and didn't know that Eclipse was going to become so suck so badly for PHP development. I've made the upgrade to Netbeans, but for debugging they only support xDebug. To be fair I've never used "proper" debuggers before, but other folks have raved about them so I thought I'd give it a try. I followed some directions on the Zend forum about how to install xDebug on Zend server, disabling Zend Debugger in the process. The xDebug "custom installation instructions" wizard tells me that my PHP was compiled with an unsupported compiler (MS VC8), and won't let me download anything. I tried a couple of the other xDebug binaries, but they just refused to load. So I'm left without a debugger option. Does anyone know how I can change the compiler of the php version I have installed so I can use a debugger in Netbeans? or how else i can get xDebug to install on Zend Server?

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• Moving from Analogue PBX to digital VoIP?

  - by saint

  I don't even know if this belongs here?. If not, do let me know. So we have an analogue Alkatel PABX system in our little office. We have extensions, direct lines and PBX lines. We are trying to move to a more digital/flexible way of handling the phones and I've heard good things about FreeSwitch. I have zero knowledge about it. My biggest question is how would one handle existing phone lines with such a system. Surely there must be a way to make and receive calls from outside. Just a help in the right direction would be fine. Thanks.

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• SSH tunnel RDP through gateway server outside the network?

  - by Mike

  I need to access a PC via RDP that is behind a firewall. There's no way to connect to it directly that I know of. What I'd like to do is SSH from that remote PC to my home Ubuntu server, then connect to the remote PC using my home PC with the Ubuntu server as a gateway. I've tried SSH from remote PC to Ubuntu server, tunneling remote port 3389 to 127.0.0.1:3389, then SSH from home PC to Ubuntu server, tunneling local port 13389 to remote port 3389. At that point I try to RDP into: 127.0.0.1:13389, 127.0.0.2:13389, :3389 - no dice. I suppose I could simply set up an SSH server on my home PC and SSH from remote PC into home PC and then establish the tunnel that way, but I'd rather not go through the hassle of installing and configuring an ssh server on my home PC. I know LogMeIn would work here, but I don't want to go that route for various reasons. Any ideas? Thanks!

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• Kernel config file generator

  - by lisak

  Hey guys, could please anybody recommend some kind of kconfig generator that would trim modules and built-in stuff that is not needed according to current hardware ? The best I have found is this : http://lkml.org/lkml/2008/9/16/290 I don't care about compilation time and the amount of modules that are not built-in. I'm concerned about performance. I don't know how much memory and runtime is wasted on huge kernels with almost everything possible. I'm a java developer and I don't know what most of the modules and drivers are for. So there is not much I can disable and be sure that I don't screw it up. Thanks in advance

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• Can a Windows 7 computer contain foreign characters for a login password

  - by Luke101

  Trying to harden our servers and would like to know if its possible for a windows 7 box to contain foreign characters?

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• Can I grant permissions on files in windows 7 using a security identifier from another machine

  - by Thomas

  I have an external hard drive, and I wish to grant permissions on some files to users from 2 different computers without having to hook it up to the 2 different computers. I know the SID of the user on the other computer, I'd like to know if and how I can grant permissions to files using the SID. I'm running Windows 7 Professional 64 bits, and "The Other" computer Win 7 Home Premium 64 bits, they are not in a domain, but separate computers on a home network (not even same homegroup). Note: Duplicated question with: Is there a way to give NTFS file permissions to users from other Windows installations?

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• Start Chrome in incognito mode in Ubuntu netboox remix

  - by Rajkumar S

  I am using Ubuntu 10.04 (Lucid) Netbook Remix in my Asus Aspire One. My default browser is Firefox and I am using Chrome for Google search in incognito mode. I want to start Chrome in incognito mode by default. I know that I need to use the following command to start the Chrome in incognito mode by default. Google-chrome --incognito %s What I do not know is how/where to edit the commandline in the launcher. Any tips on how to do this is much appreciated.

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• How to keep Windows 7 from sleeping while scanning the PC.

  - by D Connors

  So, I've been using Microsoft Security Essentials lately. And it usually takes a couple hours or more for it to full scan my hard drive. Because of that, I commonly leave it scanning while I go do something else. Problem is: 10 minutes later, windows 7 goes to sleep, and the scan is (obviously) paused. That's What I'd like to stop happening. So far, the only way I've been able to avoid it was to create a power plan, and switch to it while away, to keep the PC from sleeping. Problem is that I have to keep switching power plans and I'd like the PC to be able to go to sleep in case MSE finishes scanning and I'm still not back. Maybe I'm just asking for too much, but I've been surprised by the users here plenty of times already. So let me know if you know how to keep the PC from sleeping while MSE is scanning. Thanks

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• My computer's dying :(

  - by j-t-s

  Hi All I have a sweet computer and have never had any real problems with it until now. I recently formatted my computer and all was well. But now my monitor randomly flickers. The monitor will just go black for about a second or two, then it'll return back to its normal state with all the stuff still on the screen. This is getting progressively worse. Another problem that has started is my computer randomly restarts. (I've managed to prevent it from restarting by removing the check in Automatically Restart from the Startup and Recovery Dialog. But I know this doesn't solve the problem). It also completely freezes up on me. One last thing, this morning I got a big blue screen. I can't remember what it said, but if it happens again I will take note of it and repost. Or if I can find some kind of a log file containing that bluescreen error I will post. I have checked all cords, and they're all fine. Nothing's loose. My computer isn't overheating either. I've taken the case off for 3 whole days and haven't used the computer for those 3 days, which has had no effect. I've checked the connections inside and nothing's loose there either. I know there's nothing wrong with my monitor because my friend has 2 computers and it works perfectly on those computers. I don't understand how my computer could suddenly become so unstable. I'm almost certain that I have no viruses; I full-scan my pc everyday for nastys, and have strict firewall settings. Anyway, I don't see how it could be a virus anyway simply due to the fact that I had these problems right after I formatted, and before I even had the chance to install or copy anything or even connect to the internet. I know it has nothing to do with the way I formatted the computer too, I've been fixing computers for years. Sorry for rambling on, just making sure I don't leave anything out. Has anybody else had this problem? Can somebody please try to help me with this? Thank you :)

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• Listing pending reboots in windows

  - by Jake

  I'm trying to install SQL Server 2008 on a Windows Server 2008 x86 system, and I'm getting an error saying "Rule 'Restart computer' failed." I've already found a lot of people saying to clear the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations, but sadly this key doesn't even exist in the registry on my server. I know I've run into this exact problem before, and that remedy did not work the previous time either. I eventually found a way to list the processes that currently require a reboot in Windows, which I used as a guide for what to uninstall. I cannot, for the life of me, find out how to do that again. Does anyone know how to list the pending required reboots in windows via command line or some other tool?

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