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• How to ssh to my dorm computer with shared public IP and no admin rights over the router?

  - by Aamir

  First of all, I am not a Linux or ssh newbie. I have searched for this problem on many forums extensively but nobody seemed to have discussed this. Please help me! I live in a student dorm (off-campus) and all students of the dorm share the same WAN IP (Internet or public IP), which is fortunately static. I am not an admin and have no control over the router that assigns private IP's to all of the students, so I can't really forward port 22 to my computer :( Is it still possible to establish an ssh connection to my dorm computer from a computer on campus?

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• HP Officejet 7410 AIO: Scanning/copying output is a solid black field

  - by William

  I recently tried to breathe some life back into an old Officejet 7410 for my parents. The printing is fine, but the scanning and the copying respectively produce images and copies that are mostly solid black, except for the first inch or so from the top of the original page. At first I thought this was a bulb problem, so I replaced it. Unfortunately, the problematic behavior is still there. I've tried resetting to factory defaults. Still no improvement. I don't think this is related to my OS or drivers, since the copying is also affected even when the connected computer is powered off. So... my question(s): What is the cause of this bad behavior? Given that, can my Officejet be repaired? If so, how? Thanks in advance.

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• How do I change pages registering as 404 to 200

  - by christian

  I have this problem. After relaunching my site: http://www.kgstiles.com, traffic dropped immensely(about 60%). After troubleshooting for a week and a half - losing thousands of dollars off of lost traffic in the process, I found that Google was getting a 404 error at the end of many of my 301 redirects(so it wouldn't index the new pages). Most of of the pages, though, would register in my browser. They registered as a 404 error in Google's index as well as a 404checker. So my first question is: could this be what's causing my loss of traffic? and second: how do I fix it? I'm desperate! Any help is appreciated! # BEGIN s2Member GZIP exclusions <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{QUERY_STRING} (^|\?|&)s2member_file_download\=.+ RewriteRule .* - [E=no-gzip:1] </IfModule> # END s2Member GZIP exclusions # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] </IfModule> <IfModule mod_rewrite.c> RewriteEngine On RewriteRule ^moreinfo/(.*)$ http://www.kgstiles.com/moreinfo$1 [R=301] RewriteRule ^healthsolutions/(.*)$ http://www.kgstiles.com/healthsolutions$1 [R=301] RewriteRule ^(.*)\.html$ $1/ [R=301,L] RewriteRule ^(.*)\.htm$ $1/ [R=301,L] </IfModule> # END WordPress

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• When the Windows Firewall Service is disabled I cannot remote desktop (RDP) to the machine

  - by Matt

  When the Windows Firewall Service is disabled I cannot remote desktop (RDP) to the machine. Has anyone seen this? This is on Win7 64 Enterprise on a domain. Is it some sort of domain policy perhaps? EDIT: Yes, when the firewall service is enabled, RDP works like a charm. I can also ping the system when the firewall service is on, but not when it is off. I am starting to suspect some sort of corporate imposed security policy, but GPedit hasn't really showed anything of significance.

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• Force logoff of idle users on Windows 7 workstation with fast user switching enabled

  - by newmanth

  We have mission-critical Windows 7 workstations on our network that must be available to any user at any time, even when it has been locked by a prior user. Thus, we have fast user switching enabled. Unfortunately, it's not unusual for us to have a dozen or more different users logged onto the same machine at the same time, with a corresponding degradation in service. We've done our best at educating the masses to log off at the end of their shift. But users being users, this does not happen on a consistent basis. Does anyone know of a clean way to force logoff idle users after a certain amount of time has elapsed? I am open to any method that could be deployed/configured via script, GPO, or SCCM.

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• Reaching Intermediate Programming Status

  - by George Stocker

  I am a software engineer that's had positions programming in VBA (though I dare not consider that 'real' experience, as it was trial and error!), Perl w/ CGI, C#, and ASP.NET. The latter two are post-undergraduate, with my entrance into the 'real world'. I'm 2 years out of college, and have had 5 years of experience (total) across the languages I've mentioned. However, when it comes to my resume, I can only put 2 years down for C#, and less than a year down for ASP.NET. I feel like I know C#, but I still have to spend time going 'What does this method do?', whereas some of the more senior level engineers can immediately say, "Oh, Method X does this, without ever having looked at that method before." So I know empirically that there's a gulf there, but I'm not exactly sure how to bridge it. I've started programming in Project Euler, and I picked up a book on design patterns, but I still feel like I spend each day treading water, instead of moving forward. That isn't to say that I don't feel like I've made progress, it just means that as far as I come each day, I still see the mountain top way off in the distance. My question is this: How did you overcome this plateau? How long did it take you? What methods can you suggest to assist me in this? I've read through Code Complete, The Mythical Man Month, and CLR via C#, 2nd edition -- my question is: What do I do now? Edit: I just found this question on projects for an intermediate level programmer. I think it adds to the discussion (though it does not supplant my question). As such, I'm adding it to the question as a "For More Information".

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• Grep all files in a directory and print matches with file name

  - by javanix

  I have a list of log files that I create as part of a video encoding script that I wrote. I would like to search all of them and print out certain statistics from the encode - how fast they were encoded, what settings were used, etc. I can search for the average framerate in one file via this 1 liner: cat ${filename} | grep average which outputs: work: average encoding speed for job is 23.211176 fps and search for the ratefactor: cat ${filename} | grep RF I would like to search all files in the directory and print off one, or prefereably both pieces of information along with the filename. Is there any way I can use find or grep to get this in a one-liner, or do I need to write a script? I would like output like this: /home/javanix/filename.log <RF line> <average line> I would like this to either work using FreeBSD 9 or Ubuntu 12.04.

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• Does Wake-on-LAN from power state S5 require any OS configuration?

  - by TARehman

  I am configuring a HTPC which I would like to be able to power on using Wake-on-LAN, from the S5 state (full shutdown, still plugged in). The system is running Linux Mint 14 Cinnamon. I'm getting some conflicting information in my searching on the Net. I am not concerned with using WoL to change the state from standby or hibernate to on. Because of the current interface to our TV, the system must be either turned on or turned off. So, basically, this system will cycle from S0 to S5, and from S5 back to S0, and so on. Some tutorials suggest that I need to use ethtool to configure things after enabling WoL in my BIOS, but my understanding is that doing an S5 - S0 power on only requires the BIOS to be configured (since when the computer is in state S5, the OS hasn't even been loaded anyway). Can I use WoL with only the BIOS configured to go from state S5 to S0, or will I need to configure the OS as well?

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• How do I use memmap to reserve memory on boot?

  - by alexl

  Ive got a laptop with some corrupted ram addresses, so I'm trying to use memmap to reserve them before linux boots up. Ive been trying to use memmap=10M$1024M' as a kernel boot option, but linux crashes (with no errors) and restarts. If I use a different syntax for memmap likememmap=1023M@0M` it boots fine. Do I have to specify a certain size block to reserve or could my kernel version not support reserving memory with memmap? Maybe I'm better off using memmap=exactmap, and if so, could somebody point me to a good faq on how to use it?

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• how to detect device type from connected device to router?

  - by molly

  i have a att router and there is an unknown device connected to my network. i cant seem to kick it off because of how att's router settings are created which is kind of dumb. i am able to see its local ip and mac address. i am on a mac with snow leopard. how can i get more information on the device with the information that i have? i want to see what kind of device it is, i have checked all deviced that are connected to the router and non seem to match the local ip that is connected. i have wpa encryption setup with a strong password.

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• SQL Server tempdb size seems large, is this normal?

  - by Abe Miessler

  From what I understand the system database is used to hold temporary tables, intermediate results and other temporary information. On one of my database instances I have a tempdb that is seems very large (30GB). This database has not been modified (as in "last modified date" on the mdf file) in over a week. Is it normal to have the temp db remain that large for that long of a period? It seems to me that it should be updating fairly often and returning space that it is using fairly quickly... Am I way off here or is SQL Server doing something weird? FYI: This is a SharePoint 2010 database, not sure if that makes a difference.

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• How can I uninstall a clustered SQL instance if the cluster has been destroyed?

  - by Bob

  First time going through this scenario, and apparently I did it very wrong. On the DB servers I deleted the cluster group that held SQL and Reporting Services. I then destroyed the cluster. Then I tried to uninstall SQL. No dice. SQL still thinks its part of the non-existant cluster and will not let me uninstall it. I went into the Maintenance menu of the SQL setup and tried to Remove Node...nope. Unless I find a way out of this I will have to rebuild the OS if I can't get SQL off the box.

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• Why is MySQL making the CPU run at about 80%?

  - by Robert

  MySQL is eating up about 80% of my CPU for no reason as far as I can see. Right now this server is rarely used, more of a test site I set up that will eventually be a used for production once I fix small problems like this. I run 3 instances of MySQL but it seems that my first instance is taking up all the CPU. When I turn off the first instance and leave the other two on everything runs fine. Any suggestions? I tried Show Processlist and no statements are being run besides "Sleep" and the query "Show Processlist" (obviously) at the time it's using up all this CPU. my.cnf is basic. I did not optimize or change any MySQL settings. Do you think this would cause such strange behavior? The machine is running Linux Centos 5.7 64 bit and MySQL 5.0.95. Thanks

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• Can I lose files when changing security on an XP drive within Windows 7?

  - by Will

  Hard to come up with a title for this one, sheesh. Have a friend whose computer went down. He asked me to get all his data off his drive. His old computer was running XP. So, I've plugged it into my Windows 7 computer. When I attempt to open up his Documents and Settings folder, I get prompted to elevate in order to "permanently get access to this folder." If I do this, will I be able to access the files in this directory, or will all the current files be lost? I may be overly paranoid about this, but I can't find any information about exactly what will happen when I do this. TIA.

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• replace controller, add second controller, or use expander?

  - by longneck

  I have a Proliant DL380 G6 that I am re-purposing as a Hyper-V host for a new, off-site data center that will host our DR services. The server currently has a P410i controller with the 512MB BBWC module. The drives installed are SFF 6G 10K drives. I plan to add the HP 516914-B21 drive cage, which gives me 8 more SFF drives, bringing the total to 16. To get the additional 8 drives connected, I have one of three choices: Install a new controller that can support 16 drives. Install a second controller. Install a SAS expander, such as the HP 468406-B21 recommended by HP's spec sheet for my server. My question is: how do I know if I'm going hit a performance ceiling by putting 16 drives on the P410i or using the expander? And if I am, how do I select an appropriate controller? I'm not sure what specifications I should be looking at.

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• How to download a url as a file?

  - by Michelle

  A website url has "hidden" some mp3 files by embedding them as shockwave files, as follows: <span class="caption"><!-- Odeo player --><embed src="http://odeo.com/flash/audio_player_tiny_gray.swf"quality="high" name="audio_player_tiny_gray" align="middle" allowScriptAccess="always" wmode="transparent" type="application/x-shockwave-flash" flashvars="valid_sample_rate=true external_url=http://podcast.cbc.ca/mp3/sundayeditionstream_20081125_9524.mp3" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed></span> How can I download the files for off-line listening? I've found two methods: 1. The StackOverflow Method Create a new local html file with just the links eg <a href="http://podcast.cbc.ca/mp3/sundayeditionstream_20081125_9524.mp3">Sunday Edition 25Nov2008</a> Open the file in the browser, right click the link and File Save Link As. 2. The SuperUser Method Install the Firefox addin Iget. (Be sure to use the right version for your Firefox version.) Tools Downloads Enter url in field. Are there any other ways?

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• Spam just keeps on coming

  - by Campo

  I administer a Windows Server 2003 with Exchange 2003 as well as GFI installed. I am watching the GFI dashboard and every third email is spam. Not only that it goes to a non existent address then the [email protected] sends out an NDR to the sender. Should I be worried about this? I know it is directory harvesting but we have directory harvesting turned on in GFI and I do see it is working but obviously doesn't work for emails that don't exist. My issue is I would turn off NDR but then people who legitimately mistype and email address to our domain will never know their email did not get to the recipient. What do others do to combat spam? Is 3 times the amount of spam to ham normal? We filter out 90% of the spam but some does get into the users inbox. Thanks for the suggestions and advice!

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• Is there a way to have a working search bar in Explorer with Windows Search Service disabled?

  - by Desmond Hume

  I had to disable Windows Search Service (turn it off in Windows Features) for the reason that it was constantly using the hard drive in an excessive way (maybe because I've got very large quantities of files on my PC), noticeably slowing down my computer, and the Windows.edb database file grew way too large, about 2.5 GB in size. But the side-effect of it is that now the search bar is gone from any Explorer window and I miss this useful feature. So my question is, is there a way to stop Windows Search Service torturing my hard drive and still being able to search for files and folders directly from Explorer, perhaps using some third-party software?

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• Why is the use of abstractions (such as LINQ) so taboo?

  - by Matthew Patrick Cashatt

  I am an independent contractor and, as such, I interview 3-4 times a year for new gigs. I am in the midst of that cycle now and got turned down for an opportunity even though I felt like the interview went well. The same thing has happened to me a couple of times this year. Now, I am not a perfect guy and I don't expect to be a good fit for every organization. That said, my batting average is lower than usual so I politely asked my last interviewer for some constructive feedback, and he delivered! The main thing, according to the interviewer, was that I seemed to lean too much towards the use of abstractions (such as LINQ) rather than towards lower-level, organically grown algorithms. On the surface, this makes sense--in fact, it made the other rejections make sense too because I blabbed about LINQ in those interviews as well and it didn't seem that the interviewers knew much about LINQ (even though they were .NET guys). So now I am left with this question: If we are supposed to be "standing on the shoulders of giants" and using abstractions that are available to us (like LINQ), then why do some folks consider it so taboo? Doesn't it make sense to pull code "off the shelf" if it accomplishes the same goals without extra cost? It would seem to me that LINQ, even if it is an abstraction, is simply an abstraction of all the same algorithms one would write to accomplish exactly the same end. Only a performance test could tell you if your custom approach was better, but if something like LINQ met the requirements, why bother writing your own classes in the first place? I don't mean to focus on LINQ here. I am sure that the JAVA world has something comparable, I just would like to know why some folks get so uncomfortable with the idea of using an abstraction that they themselves did not write. UPDATE As Euphoric pointed out, there isn't anything comparable to LINQ in the Java world. So, if you are developing on the .NET stack, why not always try and make use of it? Is it possible that people just don't fully understand what it does?

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• Shooting Print Quality Pictures with a Camera Phone [Video]

  - by Jason Fitzpatrick

  Camera phones get a lot of grief for being underpowered but in this video tutorial the crew at SLR Lounge shows how basic technique and a good eye overcome all. Last year over at the photo blog FStoppers they put together a video showing off how you could use the iPhone as a fashion camera–essentially arguing that the camera wasn’t as important as the photographer. A lot of people said “Well yeah, but you had professional models and thousands of dollars in lighting equipment!” in reaction to the video. In turn the crew at SLR Lounge decided to make their own video showing that using only an iPhone camera and two reflectors (as well as an attractive but informal model). It of course helps to have some side kicks to help hold up your reflectors but the point still stands about modern camera phones being perfectly capable of good photos. The SLR Lounge iPhone Photo Shoot – A Follow Up Tribute to The FStoppers [YouTube] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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• New Dell Vostro 3550 will not boot into Live CD

  - by rich97

  I've been trying to install Ubuntu and/or it's derivatives on my new Dell Vostro 3550 but I'm finding it impossible to boot into the live CD environment. Here are the things I've already tried: Booting from multiple versions of multiple distributions (Ubuntu 10.10, Ubuntu 11.04, Mint 11, Mint 10) Booting from a Live USB created with unetbootin, the Linux Mint startup disk creator, the universal USB creator and dd of=linuxmint.***.iso if if=/dev/sdx. Burning a CD and booting from the internal CD drive. In the case of the USB keys with the latest versions of Ubuntu it gets to the page where I can select a boot option, but after selecting an option the screen goes black, even the back light turns off. With the older distributions the screen stays on but it starts loading and then just hangs. The CDs don't even try to boot. It starts spinning but then falls back to the default Windows install. The only way I've got it to work so far is with Wubi, but that's hardly ideal. I'd like to have two separate physical partitions with a /home and /. Any help is appreciated. Thank you.

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• How to stick my changes in httpd.conf on WHM/Cpanel/EasyApache

  - by Seiti

  I'm setting up a server and trying to configure the Apache. It only needs to work as a frontend to Tomcat. To do that I added some instructions to the VirtualHost directive, using mod_proxy: <VirtualHost *> ServerName myserver.domain.com ProxyRequests Off ProxyPass / http://myserver.domain.com:8080/ ProxyPassReverse / http://myserver.domain.com:8080/ </VirtualHost> It works fine, and if the need comes, I´ll use mod_jk. But, how do I do it the right way using easyapache, and stop it to always rewrite my changes.

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• how to set auto redirection in tomcat

  - by Registered User

  I have a site http://social.openitup.in right now what you are seeing is a default Tomcat6 page. I am using mod_ajp as a front end and Apache vhost configuration for same is <VirtualHost *:80 > ServerName social.openitup.in ServerAdmin webmaster@localhost ProxyRequests off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPreserveHost On ProxyPass / ajp://192.168.1.19:8009/ ProxyPassReverse / ajp://192.168.1.19:8009/ </VirtualHost> How ever I have an application running on it http://social.openitup.in/olat what I want to do is when some one opens http://social.openitup.in then rather than seeing Tomcat6 home page from /var/lib/tomcat6/webapps/ROOT/index.html the person is redirected to olat application which is in /var/lib/tomcat6/webapps/olat how can this be achived? The above vhost configuration is on a machine separate than where OLAT is running.

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• Shortcut to checkout Sharepoint documents?

  - by Benjotron

  I find myself in a lot of situations where I need to download the latest version of a document from sharepoint, or checkout a sharepoint document, make a small change, and then check the document back in. I find the website interface to be quite clunky for stuff like this, largely because I use firefox (bad with sharepoint) and keyboard launchers (instead of mousing around.) Is there anyway to make a shortcut I can just run to checkout a specific sharepoint document without going through the web browser? Am I better off using Colligo Contributor or similar software to accomplish this? Can anyone recommend any software Sharepoint clients?

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• Isopropyl okay to use on MacBook screen?

  - by Archagon

  I've always used a mixture of isopropyl alcohol and distilled water to clean my computer screens (50% water and 50% * 70% isopropyl). From what I understand, these are exactly the same ingredients used in most commercial screen cleaners, perhaps even more diluted. I recently used this solution to wipe off my 2010 MacBook Pro screen, and there don't seem to be any problems, but this support page explicitly says not to use isopropyl. Now I'm worried that I might have inadvertently damaged something. I'm also concerned because I once managed to dissolve the surface rubber lining of one of my mice with the isopropyl solution, and the MacBook Pro display has a thin rubber bezel keeping the glass in place. Why would Apple single out isopropyl on their support page? Should I be concerned?

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