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Articles indexed in October 2012

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• server will not reply (syn -ack)

  - by Brent

  I like to use the following commands to manage 'TIME_WAIT', in the hope to free up resources. echo 20 > /proc/sys/net/ipv4/tcp_fin_timeout sysctl -w net.ipv4.tcp_tw_reuse=1 sysctl -w net.ipv4.tcp_tw_recycle=1 I found something interesting while doing a tcpdump. Sometimes if a client makes a connection (syn), the server will not reply (syn -ack). My question is, could it be because of the top three commands.

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• setting up a basic mod_proxy virtual host

  - by SevenProxies

  I'm trying to set up a basic virtual host to proxy all requests to test.local to a WEBrick server I have running on 127.0.0.1:8080 while keeping all requests to localhost going to my static files in /var/www. I'm running Ubuntu 10.04. I have libapache2-mod-proxy-html installed and I have the module enabled with a2enmod proxy. I also have my virtual host enabled. However, whenever I go to test.local I always get a cryptic 500 server error and all my logs are telling me is: [Thu Mar 03 01:43:10 2011] [warn] proxy: No protocol handler was valid for the URL /. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule. Here's my virtual host: <VirtualHost test.local:80> LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so ServerAdmin webmaster@localhost ServerName test.local ProxyPreserveHost On # prevents this folder from being proxied ProxyPass /static ! DocumentRoot /var/www <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> <Proxy *> Order allow,deny Allow from all </Proxy> ProxyPass / http://localhost:8080/ ProxyPassReverse / http://localhost:8080/ ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined and here's my settings for mod_proxy: <IfModule mod_proxy.c> #turning ProxyRequests on and allowing proxying from all may allow #spammers to use your proxy to send email. ProxyRequests Off <Proxy *> # default settings #AddDefaultCharset off #Order deny,allow #Deny from all ##Allow from .example.com AddDefaultCharset off Order allow,deny Allow from all </Proxy> # Enable/disable the handling of HTTP/1.1 "Via:" headers. # ("Full" adds the server version; "Block" removes all outgoing Via: headers) # Set to one of: Off | On | Full | Block ProxyVia On </IfModule> Does anybody know what I'm doing wrong? Thanks

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• In DNS can an IN NS point to a CNAME?

  - by Mark Wagner

  Is it allowed to have an NS record be a CNAME? E.g.: subdomain.example.com. IN NS ns1.example.com. ns1.example.com. CNAME foo.example.com. foo.example.com. IN A 10.1.1.1 This doesn't seem to work in bind though this (of course) does: subdomain.example.com. IN NS foo.example.com. foo.example.com. IN A 10.1.1.1 Any pointers to RFCs prohibiting this setup would be appreciated.

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• Why am I not getting text into /var/log/messages?

  - by dafydd

  Good Morning, Today, I went to look at a backup RHEL5 server that doesn't usually need to get looked at very often. I found that /var/log/messages existed, but had a size of zero. Similarly, messages.1, messages.2, messages.3, and messages.4 are also all empty. /var/log/messages has its correct permissions. (755) Reboot - No help. rm -f /var/log/messages* and service syslog restart - No help. What am I missing?

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• If I buy a windows 8 pro from amazon(US), can I activate it in China?

  - by liweijian

  Microsoft do not sell Windows 8's DVD in China, We can only update to Windows 8 from Windows 7 , Vista or Windows XP SP3. However, I am a Ubuntu user, I don't have Windows 7 , Vista or Windows XP SP3 installed in my laptop. I was planning to buy a DVD of Windows 8 Pro from Amazon.com, but I don't know if it can be activated in China. Does anybody know? The customer service of Microsoft is too busy right now.

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• Windows 8 dual monitor wallpaper slideshow

  - by Aierou

  There have been a number of improvements with multi-monitor compatibility in Windows 8, but how would one go about configuring wallpaper slideshow settings for a second monitor? For instance: I want to display one album on my second monitor, and another on my main monitor. How would I set this up? Also, is there a way to make the slideshow display the same image on each monitor, rather than it displaying two different images from the same slideshow?

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• No audio input deviced are installed

  - by Meowbits

  If I go to Sound Recording Devices and it says "No audio devices are installed" If I click to set up a microphone I get an error "Wizard could not launch, No audio input device found, make sure your audio hardware is working properly and check your audio configuration in the Audio Devices and Sound Themes control panel. Where can I get an audio input device? I just want something so I can actually use the microphone on my headset. This is ridiculous. I have tried to look for any file but I simply cannot find a way to add an audio input device... I really do not want to format my computer just for this problem but I am starting to feel like that is the only option I have. I have the latest chipsets

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• How can I prevent my volume from changing when initiating a Skype call?

  - by Daniel

  I already know about the option in Control Panel Sound Communications, so please don't bother pointing me there. I am using the Skype Modern UI app and whenever I start a call, it lowers the volume of anything else that I have active. How can I resolve this issue? Also, not sure if this is related, but any Modern UI music apps also lower their own volume when they are not in the foreground. This seems relevant: http://blogs.msdn.com/b/windowsappdev/archive/2012/08/23/media-playback-what-you-need-to-know-about-playing-media-to-make-your-app-shine-in-windows-8.aspx

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• Arguments passed on by shell to command in Unix

  - by Ryan Brown

  I've been going over this question and I can't for the life of me figure out why the answer is what it is. How many arguments are passed to the command by the shell on this command line:<pig pig -x " " -z -r" " >pig pig pig a. 8 b. 6 c. 5 d. 7 e. 9 The first symbol is supposed to be the symbol for redirected input but the site isn't letting me use it. [Fixed.] I looked at this question and said ok...arguments...not options so 2nd pig, then " ", then -r" ", 4th pig and 5th pig...-z and -x are options, so I count 5. The answer is b. 6. Where is the 6th argument that's being passed on?

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• Wi-Fi connected but can't go to any site

  - by Michael Dy

  My Windows 7 laptop can connect to our Wi-Fi signal, I can sign in on Yahoo! Messenger, but I can't go to any site. I can access the Net on other devices. The issue started a few weeks ago, so I've been troubleshooting since then in vain. There's no virus, and I already used System Restore. In Wireless Network Connection Status, the received activity is greater than the sent activity. I turned off Windows Firewall and still no Net access. My ping tests: How do I fix this?

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• How do you launch an SSH connection with port forwarding without interrupting your screen access?

  - by vfclists

  I want to make an SSH connection to another server with forwarding, but without having to log on to the remote server, nor interfere with the screen I am working on. I also need to access the connection to terminate it when I finish with it. eg. say I want to do a mysql backup on a remote server so I use the command ssh user@remote -L 1234:localhost:3306 but after issuing the password I want to run the mysql command in the session, but be able to access the SSH connection when I finish with mysql and terminate it. Is there some way this can be done?

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• How to boot RHEL with no bash?

  - by nmelmun

  How can I boot a RHEL VM if I deleted /bin/bash? When trying to boot, I now get the following error: "INIT: Cannot execute "/etc/rc/d/rc.sysinit" The next thing I tried was to modify the kernel boot parameters by adding init=/bin/ksh at the end of the line, which gave me a functional shell. After this, in order to get write permissions, I remounted the root partition with: mount -o remount,rw / Then I tried to boot using ksh as the shell by tricking the system into thinking it's bash: ln -s /bin/ksh /bin/bash Then restarted the system normally. Unfortunately this didnt work since ksh is not compatible and /etc/rc.d/rc.sysinit uses several bash-specific tricks. Does anyone else have a suggestion on how I could get the system to boot normally without reinstalling bash?

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• General guidelines / workflow to convert or transfer video "professionally"?

  - by cloneman

  I'm an IT "professional" who sometimes has to deal with small video conversion / video cutting projects, and I'd like to learn "the right way" to do this. Every time I search Google, there's always a disaster for weird, low-maturity trialware, or random forums threads from 3-4 years ago indicating various antiquated method to do it. The big question is the following: What are the "general" guidelines and tools to transcode video into some efficient (lossless?) intermediary, for editing purposes, for the purpose of eventually re-encoding it after? It seems to me like even the simplest of formats and tasks are a disaster of endless trial & error, or expertise only known by hardened experts who have a swiss army kife of weird conversion tools that they use, almost as if mounting an attack against the project. Here are a few cases in point: Simple VOB files extracted from DVD footage can't be imported into Adobe Premiere directly. Virtualdub is an old software people keep recommending but doesn't seem to support newer formats. I don't even know how to tell with certainty which codecs a video has, and weather the image is interlaced or not, and what resolution and codecs I'm dealing with. Problems: Choosing a wrong interlace option which diminishes quality Choosing a wrong pixel aspect ratio (stretches the image) Choosing a wrong "project type" in Premiere causing footage to require scaling Being forced to use some weird program that will have any number of negative effects What I'm looking for: Books or "Real knowledge" on format conversions, recognized tools, etc. that aren't some random forum guides on how to deal with video formats. Workflow guidelines on identifying a format going from one format to another without problems as mentioned above. Documentation on what programs like Adobe Premiere can and can't do with regards to formats, so that I don't use a wrench as a hammer. TL;DR How should you convert or "prepare" a video file to ensure it will be supported by Premiere for editing? Is premiere a suitable program to handle cropping, encoding, or should other tools be used for this, when making a video montage from a variety of source formats? What are some good books to read that specifically deal with converting videos that use any number of codecs?

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• How do I make a PPT file as small as possible?

  - by grunwald2.0

  Currently I am agonizing over several large presentation files, which I happened to reprint to PDFs... One thing I wondered: Do PPT's (from Microsoft Powerpoint) always to have to be that big? And what would be the strategies to make a PPT smaller? (If we say "ceterus paribus" at e.g. 25 slides and assuming that one isn't allowed to use a cloud-based service like GDocs, rocketslide or Prezio.) Of course there are the obvious "bad guys": Images and graphics. But: How about roll-over animations etc, who knows how much space they take? How about "smart arts"? Could one save file size if one would use "Open Office" or "Libre Office" Impress? (I didn't try it yet.) And "what if": What if we need to include e.g. five images (or charts that can't be remade in Excel in time), how would we best reduce the file size impact of those five images, if we needed to? I ask all this from an honest "business" perspective. I am no nerd or "Microsoft MVP" and I don't intend on delving into LATeX or similar yet. But that doesn't mean that I am not curious and very willing to learn. I am basically interested in (proven) best practices. Yes I know this question is lacking "initial research", but I think the perspective of my question is interesting and unique to a lot of people and if we intend to make SE a "Q&A" / Wiki kind-of reference site, this question might be a good way to "collect" advice on a question that has a very defined goal: Minimum file-size.

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• Time randomly changing itself, internet randomly dying

  - by Vee

  Operating System MS Windows 8 Enterprise 64-bit CPU Intel Core i7 2700K @ 3.50GHz 45 °C Sandy Bridge 32nm Technology RAM 8,00 GB Dual-Channel DDR3 @ 800MHz (8-8-8-24) Motherboard ASRock Z77 Extreme4-M (CPUSocket) 40 °C Graphics SMXL2270HD (1920x1080@60Hz) M2094D-PZ (1680x1050@60Hz) 896MB GeForce GTX 275 (CardExpert Technology) 57 °C Hard Drives 466GB FUJITSU MAXTOR STM3500320AS (SATA) 39 °C Optical Drives ASUS DRW-2014L1T Audio High Definition Audio Device Hello everyone, I installed Windows 8 RTM a few weeks ago. It's not my first time installing it, but it's the first time having two annoying problems: 1) Randomly, the system clock changes time all by itself - to fix it I have to open the time window and sync it with the internet. 2) Randomly, internet connection stops working - to fix I have to run troubleshooting. Windows will find a problem with IP on the "Ethernet" connection and fix it. 3) In rare occasions, my PC freezes and I need to restart it (a BSOD once happened, but after that only freezes) How can I permanently solve these problems? This is what I've already tried: Reset Virus scan Stop/reset the Windows Time service Disable/re-enable Windows Time automatic internet sync Change time from BIOS Change motherboard battery

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• How to use the autocomplete feature for VBA function in Excel 2007 with Excel Add-In

  - by Nam G. VU

  (cloning from question on SO) I created a function in VBA. I want Excel 2007 to show the Autocomplete when writing this function in the cell's Excel. Detail as How to use the autocomplete feature for VBA function in Excel 2007 with Excel Add-In (.xlam)? ps. In Excel 2010, the autocomplete works In Excel 2007 with Excel Macro-Enabled Worksheet (.xlsm), the autocomplete works. The test file here. But, in Excel 2007 with Excel Add-In (.xlam), the autocomplete NOT works. The test file here.

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• Win 7 firewall won't turn on, nor the McAfee firewall. Hit by "Win 7 Anti-virus 2012" trojan. Removed, but a downed firewall is a lasting legacy

  - by PhxTitan

  I caught the Trojan right away, I think, but both my McAfee & Win 7 (x64) firewalls are not able to be engaged/turned on now. MS Error Code 0x80070424 when attempting to turn on Win 7 firewall. No viruses. Swept it with McAfee AV, Malwarebytes Anti-Malware, Microsoft malware removal tools. Followed Microsoft's three courses of alternative actions they posted for instructions for getting the Win 7 firewall back up and on. Nothing. Same error code. The post just said see MS support if those fixes failed. So I removed McAfee altogether. Still Win 7 (professional version) firewall won't come on; and clean of detectable bugs. And I'm fully updated with MS Windows 7 updates as well, which is no longer automatic, that too a legacy of the trojan bug I think. Any thoughts on how to get the Win 7 firewall operational??? And auto updating reengaged?

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• Lotus Notes 8.0.2 - how to stop all mail showing in customized view

  - by mikolajek

  I am using Lotus Notes 8.0.2 at work and unfortunately the admin restricted changing default folders design. Only little changes are possible (e.g. change columns order) and even them are resetted each time I restart the client. I've created a new view with my desired column order, changed sorting etc. I have only one problem - even though I changed the "view" preference to show messages from the inbox folder only, I keep seeing all mail, regardless of the folder they are placed into. I'm not a Lotus expert and don't really know how to code. Yet, I am surprised as I see in a "simple view" this: uses '(ChangeMeetingType), ...' form AND In folder 'Inbox' And in Formula view only this: SELECT ((Form = "(ChangeMeetingType)") | (Form = "(Return Receipt)") | (Form = "Return Receipt") | (Form = "(ReturnNonReceipt)") | (Form = "ReturnNonReceipt") | (Form = "Memo") | (Form = "Memo") | (Form = "MemoEA") | (Form = "Reply") | (Form = "Reply") | (Form = "Reply With History") | (Form = "Reply With History") | (Form = "To Do") | (Form = "Task") | (Form = "_Document Memo") | (Form = "$DocMemo") | (Form = "Word. Document$Word Memo") | (Form = "WordPro. Document$Word Pro Memo") | (Form = "AlternateMemo")) Therefore, it looks like no folder has been really selected. How can I create a solution to see: Inbox contents only? Just messages, invitations and other "normal" stuff - without calendar entries and contacts?

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• Release Notes for 10/25/2012

  Below are the release notes from this week's deployment. Improvements and Bug Fixes Fixed issue with some Mercurial projects showing duplicate branch names within the branch drop-down. Several bug fixes and UI tweaks to the new source browsing experience. Have ideas on how to improve CodePlex? Please visit our suggestions page! Vote for existing ideas or submit a new one. As always you can reach out to the CodePlex team on Twitter @codeplex or reach me directly @mgroves84

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• Recent EC Meetings - RIM forfeits EC seat

  - by heathervc

  Materials and minutes from the JCP EC Face-to-Face Meeting, held September 2012 in Prague, are now available on the EC Meeting Summaries page.  Topics included JCP.Next, a JCP 2.8 progress report, Inactive JSRs, and two Spec Lead presentations. In October 2011, new EC Standing Rules went into effect. The Rules include the following: "Missing five meetings in a row, or missing more than two-thirds of all meetings in any consecutive twelve-month period, results in loss of EC membership."  Last week, the JCP EC met for their October EC teleconference meeting.  RIM missed this meeting, and has now missed five meetings in a row (see the attendance chart); therefore, RIM has forfeited their EC membership. Results from the 2012 EC Elections will be available on 30 October.  The new merged EC will go into effect on 12 November.

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• Yet another ADF book - Oracle ADF Real World Developer’s Guide

  - by Chris Muir

  I'm happy to report that the number of ADF published books is expanding yet again, with this time Oracle's own Jobinesh Purushothaman publishing the Oracle ADF Real World Developer’s Guide.  I can remember the dim dark days when there was but just 1 Oracle book besides the documentation, so today it's great to have what I think might be the 7 or 8th ADF book publicly available, and not to forgot all our other technical docs too. Jobinesh has even published some extra chapters online that will give you a good taste of what to expect.  If you're interested in positive reviews, the ADF EMG already has it's first happy customer. Now to see if I can get Oracle to expense me a copy.

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• Named my RPi 512MB @jerpi_bilbo

  - by hinkmond

  To keep our multiple Raspberry Pi boards apart from each other, I've now named my RPi Model B w/512MB: "jerpi_bilbo", which stands for Java Embedded Raspberry Pi - Bilbo (named after the Hobbit from the J.R.R. Tolkien stories). I also, set up a Twitter account for him. You can follow him at: @jerpi_bilbo He's self-tweeting, manual prompted so far (using Java Embedded 7.0 and twitter4j Java library). Works great! I'm setting him up to be automated self-tweeting soon, so watch for that... Here's a pointer to the open source twitter4j Java library: download here Just unzip and extract out the twitter4j-core-2.2.6.jar and put it on your Java Embedded classpath. Here's how @jerpi_bilbo uses it to Tweet with his Java Embedded runtime: import twitter4j.*; import java.io.* public final class Tweet { public static void main(String[] args) { String statusStr = null; if ((args.length 0) && (args[0] != null)) { statusStr = args[0]; } else { statusStr = new String("Hello World!"); } // Create new instance of the Twitter class Twitter twitter = new TwitterFactory().getInstance(); try { Status status = twitter.updateStatus(statusStr); System.out.println ("Successfully updated the status to: " + status.getText()); } catch (Exception e) { e.printStackTrace(); } } } That's all you need. Java Embedded rocks the RPi! And, @jerpi_bilbo is alive... Hinkmond

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• Will the Global Demand for Water Outstrip the Supply by 2030?

  - by Evelyn Neumayr

  A recent study conducted by the Economist Intelligence Unit and sponsored by Oracle Utilities, titled “Water for All?”,considers the preparedness of utilities to supply water to the current global population of over 7 billion people, with a further 1 billion expected by 2030. It compares strategies used by utilities in 10 major countries to address this challenge. This study’s findings show that wide-ranging water management efforts and large-scale investments must be made if utilities are to meet near-certain water stress—demand outstripping supply—by 2030. The report is based on an online survey of 244 executives of water utilities in these countries, supplemented by in-depth interviews with 20 water utility executives and independent experts. The research concludes that utilities worldwide expect to meet future demand, despite increased supply pressure on supplies, due to improvements in water productivity that the wide range of measures utilities and governments will take to ensure that water is used more efficiently. Read more about this here.

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• Product News: Oracle Unveils a Waste Management Solution for the Oracle E-Business Suite

  - by Evelyn Neumayr

  Oracle recently announced a new product to help organizations reduce the cost and compliance with international hazmat (short for hazardous materials) and recycling and environmental protection laws. This new waste management solution for Oracle E-Business Suite extends the capabilities of  Oracle Depot Repair, Oracle Transportation Management and Oracle Global Trade Management. It automates and monitors waste management processes to help ensure that hazardous materials are tracked and handled in accordance with regulatory requirements. Oracle’s waste management solution for the Oracle E-Business Suite leverages Oracle Transportation Management and Oracle Global Trade Management, enabling customers to view in-transit inventory across the extended supply chain, while also providing a single repository for all legal, regulatory and compliance related information. Read here for more information.

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• VirtualBox ????????????????????????/?????

  - by katsumii

  VirtualBox ???????OS??????????????????????????OS?????????Windows???????? "VirtualBox Host-Only Ethernet Adapter" ???????????????????????Linux?? "vboxnet0" ?????? ???????????????????????????????????????#7067 (VERRINTERNALERROR: Inexistent host networking interface, named 'vboxnet0') – Oracle VM VirtualBoxVERR_INTERNAL_ERROR: Inexistent host networking interface, named 'vboxnet0'????2??????VirtualBox ?????????????????????????????????????????????Windows?????VBoxManage.exe modifyvm node1_1  --hostonlyadapter1 "VirtualBox Host-Only Ethernet Adapter"

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