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• Why isn't persistence working on Lubuntu 12.04 Live-USB?

  - by Frodik

  I have used Universal-USB-Installer ever since to install different Linux versions to USB flash drive. But now with Lubuntu 12.04 even though I do the same process by selecting persistence file, it gets created but is never used in Lubuntu. Every time I boot into Lubuntu on flash, it is fresh new Lubuntu without my changes I did last time I have booted it. Anyone can help me or give me some hints ? Thanks in advance.

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• SEQUENCE in SQL Server 2011

  SEQUENCE is a core new feature of SQL Server 2011 (Denali). It is a more performant, flexible alternative to the INDENTITY attribute. This article introduces sequence and demonstrates how to use it and its performance advantage. Free trial of SQL Backup™“SQL Backup was able to cut down my backup time significantly AND achieved a 90% compression at the same time!” Joe Cheng. Download a free trial now.

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• A quick look at: sys.dm_os_buffer_descriptors

  - by fatherjack

  SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id ...(read more)

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• Do Outbound Links Hold Search Engine Power?

  Now, I do not know if this applies to just when the link points to pages on your own site or any outbound links, but time and time again I see before me the evidence that this could just be the case. Last night I was comparing 2 of my own websites. The first, with Page Rank 3 and lots of SEO work against the second, Page Rank 0 and ignored.

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• How to Spot a Good Search Engine Optimization Company

  Acquiring the services of a Search Engine Optimization Company can greatly help and enhance in marketing anyone's Internet business. These companies are the experts when it comes to making your website rank high in search engine positions and keeping it that way in a regular basis, while doing the necessary corrections to offset any negative outcomes within a specified time period. The entire work takes a considerable amount of knowledge, effort, and time to achieve, so it is in your best to contact one rather than do it yourself in order to accomplish your marketing goals.

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• Effectively Increase Chances of Repeat Visits to Your Website

  The ultimate goal of SEO/Online Marketing is not just to continually increase website traffic but to establish a loyal following of visitors. With the ever growing competition, and highly exactly standards of online consumers nowadays, how does one manage that? Getting people to visit your site is one thing, but getting them to look up your site from time to time, may seen too ambitious.

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• Effectively Increase Chances of Repeat Visits to Your Website

  The ultimate goal of SEO/Online Marketing is not just to continually increase website traffic but to establish a loyal following of visitors. With the ever growing competition, and highly exactly standards of online consumers nowadays, how does one manage that? Getting people to visit your site is one thing, but getting them to look up your site from time to time, may seen too ambitious.

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• What class to use in order to have a number move around the screen?

  - by AllenZ41

  What i am trying to accomplish is have a randomly created number move around the screen but it is touchable. I am planning to have lots of numbers on the screen, so my question is what class is appropriate to use, so I could set a number randomly at run time and display it while it moves around the screen? I was planning the use a TextView, since I want to use a custom font of mine but I think creating a bunch at a time could cause a memory problem and to my understanding they cant move around the screen at runtime.

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• Should you promise to deliver a feature that you aren't sure if its implementable?

  - by user476

  In an article from HN, I came across the following advice: Always tell your customer/user "yes", even if you're not sure. 90% of the time, you'll find a way to do it. 10% of the time, you'll go back and apologize. Small price to pay for major personal growth But I've always thought that one should do a feasibility analysis before making any kind of promises to a customer/user, so that they aren't misled at any point. At what circumstances, then, should the above advice applicable?

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• Keyword Density - How Much is Too Much For SEO?

  A long time ago the easiest way to reach high rankings in many search engines at that time was to stuff pages with target keywords. Some tried to hide some part of the page by using background color also for text, while others simply put few paragraphs with apparently irrelevant keywords at the end of the page. Because word frequency was one of the most important factors to rank pages, it was pretty easy to reach top positions just by exaggerating with keywords.

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• Venture Capital SEO (Search Engine Optimization)

  Back in the day, venture capitalists relied on tips, networking and brute force to find companies to invest in. Typically, more of their time was spent actively searching for leads than marketing their services. The internet changed all of that. A quick resource for start-up companies looking for companies to invest in them, today's venture capitalists have been forced to change the way they do business - now they must spend more of their time advertising.

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• STOP! Wrong Server!

  - by merrillaldrich

  Some time ago I wrote a post about old-time T-SQL flow control . Part of the idea was to illustrate how to make scripts abort on errors, which is surprisingly convoluted in T-SQL. Today I have a more specific example: how can I check that we are really about to execute in the right database on the right server, and halt if not. Perhaps you’ve connected to the wrong server, or the database you intend to modify doesn’t have the name your script expected. “USE database” is wonderful, but what if it...(read more)

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• How to Promote a New Website

  Promoting a website is not a work of one day or one week, it takes time to improve a website's position on search engines. And if your website is a new one then it takes more time.

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• How Do SEO Consultancies Work?

  SEO Consultancies have a very different way of working and functioning. Enterprises that want to have their websites optimized approach the consultancies to either take up the assignment full time or provide part time consulting services.

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• Make Your Own Website - It is Easier Than You Imagine!

  If you are thinking that it would be far too hard to even consider making your own website, it is time to think again! Building your own website has never been easier, together with the greatly reduced cost of building and maintaining your site, the time has never been better.

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• ?????? ??????????! ?Gold???? vol.3 <??>

  - by M.Morozumi

  ???ORACLE MASTER Gold Oracle Database 11g?????????????? ?????????????????????? ------------------------------- ???? Point-in-Time ?????????????????????????????????( )??????????????? ( )???????????????1????????? a.TS_PITR_OBJECTS_TO_BE_OBSOLETED b.TS_PITR_OBJECTS_TO_BE_DISAPPEARED c.TS_PITR_OBJECTS_TO_BE_DROPPED ??????????????? ------------------------------- ??:c.TS_PITR_OBJECTS_TO_BE_DROPPED ??: ???? Point-in-Time ?????????????????????????????????TS_PITR_OBJECTS_TO_BE_DROPPED ????????????????????????????????

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• Need for explanation: NetBIOS over TCP/IP on VMware network adapter disturbs access to network share

  - by gyrolf

  Some time ago nearly all workstations in our team (Windows XP SP2) exhibited intermittend but frequent delays when accessing shares on the network. Typically the first access to a share which hadn't been accessed for some time resulted in a nearly frozen workstation for up to 30 seconds. Then everything started working fine again. Using TCPView from Sysinternals I saw that during this delays there was a connection to the netbios-ssn port on the file server which was in state SYN_SENT. First try: Disable NetBIOS over TCP/IP for the intranet network adapter. Problem solved, but I didn't like to manipulate our centrally managed network configuration for the intranet. Second try: Disable NetBIOS over TCP/IP only for the VMWare network adapter (VMNet1 used for host only communications). Problem solved again! My questions: Why does NetBIOS over TCP/IP on one network adapter disturb NetBIOS over TCP/IP on another network adapter? Is this problem specific to VMWare network adapters? Has anybody else seen this phenomen? Additional information: VMWare Workstation version 6.0.3 At the time I started seriously analysing the problem it was no more possible to find out what had been changed to our systems at the time the problems started.

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• Managing scalability and availability with two servers running Apache Httpd, Apache Mina and MySQL

  - by celalo

  Hello, I am not a developer and I don't much experience with scalable server architectures. But I am in need of a highly available and scalable system for one of my projects. There is going to be two servers I am going to use for the time being. Both with 4 core CPUs and 8 GB RAM with RAID structures running CentOS 5.4. I will also have feature called "Failover IP" which enables to direct an IP address to another server within short time. The applications which will be run on the servers: There is going to be a Java application based on Apache Mina server for handling TCP requests from some hundreds of network devices where the devices are going to send request as much as one request per minute. Handling those requests, includes parsing the requests and inserting a few rows to the Database. Parsing requests before inserting data to the DB does take neglectable time. There is going to be MySQL server, as I stated above. Also there is going to be a PHP web application running on Apache Httpd Server which uses the same DB with the Java application. What I wish to have is to make use of those two servers at the most. I was imagining to have the servers identical, sharing the work load. MySQL could be a cluster maybe? And if some application fails or the whole machine goes down, the other will continue serving the requests seamlessly. Reminding that a "Failover IP" feature will be available for me to take advantage of. Also, It should be kept in mind that number of servers could increase in time, to meet the demand. What can you suggest? Which kind of tools I can make use of? Which kind of monitoring software (paid/unpaid) I have? Thanks in advance.

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• imapsync - Authentication failed

  - by Touff

  I've deployed many Google Apps accounts and have used imapsync a number of times to migrate accounts to Google Apps. This time however, no matter what I try imapsync refuses to work claiming my credentials are incorrect - I've checked them time and time again and they are 100% correct. On Ubuntu 12, built from source, my command is: imapsync --host1 myserver.com --user1 [email protected] --password1 mypassword1 -ssl1 --host2 imap.gmail.com --user2 [email protected] --password2 mypassword2 -ssl2 -authmech2 PLAIN Full output from the command: get options: [1] PID is 21316 $RCSfile: imapsync,v $ $Revision: 1.592 $ $Date: With perl 5.14.2 Mail::IMAPClient 3.35 Command line used: /usr/bin/imapsync --debug --host1 myserver.com --user1 [email protected] --password1 mypassword1 -ssl1 --host2 imap.gmail.com --user2 [email protected] --password2 mypassword2 -ssl2 -authmech2 PLAIN Temp directory is /tmp PID file is /tmp/imapsync.pid Modules version list: Mail::IMAPClient 3.35 IO::Socket 1.32 IO::Socket::IP ? IO::Socket::INET 1.31 IO::Socket::SSL 1.53 Net::SSLeay 1.42 Digest::MD5 2.51 Digest::HMAC_MD5 1.01 Digest::HMAC_SHA1 1.03 Term::ReadKey 2.30 Authen::NTLM 1.09 File::Spec 3.33 Time::HiRes 1.972101 URI::Escape 3.31 Data::Uniqid 0.12 IMAPClient 3.35 Info: turned ON syncinternaldates, will set the internal dates (arrival dates) on host2 same as host1. Info: will try to use LOGIN authentication on host1 Info: will try to use PLAIN authentication on host2 Info: imap connexions timeout is 120 seconds Host1: IMAP server [SERVER1] port [993] user [USER1] Host2: IMAP server [imap.gmail.com] port [993] user [USER2] Host1: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Host1: SERVER1 says it has CAPABILITY for AUTHENTICATE LOGIN Host1: success login on [SERVER1] with user [USER1] auth [LOGIN] Host2: * OK Gimap ready for requests from MY-VPS Host2: imap.gmail.com says it has CAPABILITY for AUTHENTICATE PLAIN Failure: error login on [imap.gmail.com] with user [USER2] auth [PLAIN]: 2 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure) I have tried -authmech2 LOGIN as well which returns: Host2: imap.gmail.com says it has NO CAPABILITY for AUTHENTICATE LOGIN Failure: error login on [imap.gmail.com] with user [[email protected]] auth [LOGIN]: 2 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure) If anyone can shed some light on this I would greatly appreciate it.

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• VirtualBox Issue: virtualbox changed my Computer Name's ip address in Windows

  - by suud

  I had installed virtualbox 4.2.2 in Windows 7. My Computer Name is: MY-PC My IP address (using ipconfig /all command) is: 192.168.1.101 My IP is dynamic and I set DNS to google dns (8.8.8.8) When I ping MY-PC, I got this result: Pinging MY-PC [192.168.56.1] with 32 bytes of data: Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 My virtualbox was not running and I expected the ip adress of MY-PC is 192.168.1.101, not 192.168.56.1 Then I run command: nbtstat -a MY-PC and I got this result: VirtualBox Host-Only Network: Node IpAddress: [192.168.56.1] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- MY-PC <00> UNIQUE Registered WORKGROUP <00> GROUP Registered MY-PC <20> UNIQUE Registered MAC Address = 08-00-27-00-60-B3 Local Area Connection: Node IpAddress: [0.0.0.0] Scope Id: [] Host not found. Wireless Network Connection: Node IpAddress: [192.168.1.101] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- MY-PC <00> UNIQUE Registered WORKGROUP <00> GROUP Registered MY-PC <20> UNIQUE Registered MAC Address = 94-0C-6D-E5-6D-5D So it seems virtualbox caused this problem. I want to know how to change back my Computer Name's ip address to 192.168.1.101 (or any ip address that set by my internet connection)?

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• AWStats consumes too much resource, how to disable temporarily

  - by trante

  For some days AWStats takes %10-%20 of my CPU, takes 400-550 MB RAM and works for hours. Maybe my site's traffic became larger so process time takes more time than before or some bugs in program makes this. Anyway I want to disable AWStats temporarily. Maybe I would want to activate it in future. I found that answer. But it gives commands to remove AWStats. I only want to disable it temporarily. My system is Centos 6.3, Plesk 11.5.30 Update #19. I tried to disable cron jobs. I run this # killall awstats.pl I opened # vi /etc/cron.daily/awstats file and I changed it to this: #!/bin/sh #/usr/share/awstats/awstats_updateall.pl now -awstatsprog=/var/www/cgi-bin/awstats/awstats.pl -configdir=/etc/awstats >/dev/null 2>&1 exit 0 After some time I still see that awstats is running. What should I do more to not to awstats run again ? But without removing my files. After changing " /etc/cron.daily/awstats" file awstats doesn't start in daytime. But every night in 03:15 awstats starts again. Because of Plesk auto updates are working at that time, I changed from Plesk. Don't auto update automatically. But it seems like last night at 03:15 awstats started again. Is there any way to stop awstats temporarily except this solution ? Because this solution deletes awstats configs permanently and I don't know how to revert it back in future ? Turn off all AWStats for Plesk 11+ domains #!/bin/bash for i in /var/www/vhosts/*; do echo "Turning off and deleting Stats for" echo `basename $i` /usr/local/psa/admin/bin/webstatmng --unset-configs --stat-prog=awstats --domain-name=`basename $i` /usr/local/psa/admin/bin/webstatmng --clean --stat-prog=awstats --domain-name=`basename $i` done

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• How does a web server/the http protocol handle version control and compression?

  - by Sune Rasmussen

  When a client browser requests a file from the web server, I know that some kind of check is performed, because the files needed to serve the web page may already be cached by the web browser. So, if a file exists in the cache, no files are sent. But if the file on the server has changed since the file was cached in the browser, the file is sent and updated anyhow. Then, if you have compression like gzipping enabled on the server, the files that are to be provided to the client must be gzipped on the way, requiring some amount of server side processing. But how is this managed? The logical approach seems to me, that the web server should have a cache as well, containing the newest version of all files that have been requested within a certain time span, thus a compressed version of these files, so that compression would not have to be done each time a files is requested. And also, how are files eventually requested? Does the browser ask for files, each time it encounters one in the HTML code and the specific file is not stored in the local cache, or does it sum all the files that are needed up and ask for the whole bunch at the same time? But that's only guessing from a programming point of view, and I don't really know. If the answers are very different among web server systems, I'm primarily interested in Apache, but other answers are appreciated, too.

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• Can ping IP address and nslookup hostname but cannot ping hostname

  - by Puddingfox

  I have a DNS server set up on one of my machines using BIND 9.7 Everything works fine with it. On my Windows 7 desktop, I have statically-assigned all network values. I have one DNS server set -- my DNS server. On my desktop, I can ping a third machine by IP fine. I can nslookup the hostname of the third machine fine. When I ping the hostname, it says it cannot find the host. / C:\Users\James>nslookup icecream Server: cake.my.domain Address: xxx.xxx.6.3 Name: icecream.my.domain Address: xxx.xxx.6.9 C:\Users\James>ping xxx.xxx.6.9 Pinging xxx.xxx.6.9 with 32 bytes of data: Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Ping statistics for xxx.xxx.6.9: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\Users\James>ping icecream Ping request could not find host icecream. Please check the name and try again. I have also specified the search domain as my.domain xxx.xxx and my.domain substituted for security Why can I not ping by hostname? I also can not ping using the FQDN. The problem is that this problem is shared by all applications that resolve hostnames. I cannot use PuTTY to SSH to my machines by hostname; only by IP

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• How to remove a plain text protecting single quote from all the selected cells in LibreOffice Calc?

  - by Ivan

  I've imported a CSV file having the first column to be date-time values in ISO 8601 format like 2012-01-01T00:00:00.000Z for the first moment of the year 2012. Then, willing to make LibreOffice to recognize the format (as I was looking forward to plot a diagram), I've selected the column, chosen Format Cells... and entered the custom time format as YYYY-MM-DDTHH:MM:SS.000Z And this seems to work if... I edit a cell to remove a hidden single-quote from its beginning (which serves to protect a cell content from being interpreted) as all the newly formatted cells now store values like '2012-01-01T00:00:00.000Z (note the single quote - it is only visible when you edit a particular cell). And I am to do so for all the cells in the column. How can I automate this? UPDATE: I've already found a solution for the particular case of mine: it helps to set a column format to "time" in the CSV import dialogue. But I am still curious how could this be done in case I wouldn't have the original .csv data file to import but only the .ods file with the data already imported without the format specified at the import time.

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• Windows 7 BSOD with Service Exception Error and Randomly Reboots

  - by Jason Shultz

  I've got a windows 7 laptop that BSOD with a Service Exception Error when I connect to a wireless network. It also does it when it's just sitting still doing nothing. I ran bluescreenview and here are the last four BSOD's from today: ================================================== Dump File : 051210-18642-01.dmp Crash Time : 5/12/2010 8:36:14 AM Bug Check String : SYSTEM_SERVICE_EXCEPTION Bug Check Code : 0x0000003b Parameter 1 : 00000000`c000001d Parameter 2 : fffff880`00000000 Parameter 3 : fffff880`06fda160 Parameter 4 : 00000000`00000000 Caused By Driver : Ntfs.sys Caused By Address : Ntfs.sys+7f030 File Description : Product Name : Company : File Version : Processor : x64 Computer Name : Full Path : C:\Windows\Minidump\051210-18642-01.dmp Processors Count : 2 Major Version : 15 Minor Version : 7600 ================================================== ================================================== Dump File : 051210-16551-01.dmp Crash Time : 5/12/2010 8:41:04 AM Bug Check String : SYSTEM_SERVICE_EXCEPTION Bug Check Code : 0x0000003b Parameter 1 : 00000000`c000001d Parameter 2 : fffff880`00000000 Parameter 3 : fffff880`06f40160 Parameter 4 : 00000000`00000000 Caused By Driver : ntoskrnl.exe Caused By Address : ntoskrnl.exe+70600 File Description : NT Kernel & System Product Name : Microsoft® Windows® Operating System Company : Microsoft Corporation File Version : 6.1.7600.16539 (win7_gdr.100226-1909) Processor : x64 Computer Name : Full Path : C:\Windows\Minidump\051210-16551-01.dmp Processors Count : 2 Major Version : 15 Minor Version : 7600 ================================================== ================================================== Dump File : 051210-17269-01.dmp Crash Time : 5/12/2010 8:45:51 AM Bug Check String : SYSTEM_SERVICE_EXCEPTION Bug Check Code : 0x0000003b Parameter 1 : 00000000`c000001d Parameter 2 : fffff880`00000000 Parameter 3 : fffff880`07db1160 Parameter 4 : 00000000`00000000 Caused By Driver : Ntfs.sys Caused By Address : Ntfs.sys+7f030 File Description : Product Name : Company : File Version : Processor : x64 Computer Name : Full Path : C:\Windows\Minidump\051210-17269-01.dmp Processors Count : 2 Major Version : 15 Minor Version : 7600 ================================================== ================================================== Dump File : 051210-19453-01.dmp Crash Time : 5/12/2010 5:46:25 PM Bug Check String : SYSTEM_SERVICE_EXCEPTION Bug Check Code : 0x0000003b Parameter 1 : 00000000`c000001d Parameter 2 : fffff880`00000000 Parameter 3 : fffff880`02625160 Parameter 4 : 00000000`00000000 Caused By Driver : win32k.sys Caused By Address : win32k.sys+2d4201 File Description : Product Name : Company : File Version : Processor : x64 Computer Name : Full Path : C:\Windows\Minidump\051210-19453-01.dmp Processors Count : 2 Major Version : 15 Minor Version : 7600 ==================================================  

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