Cloud Computing

Grails - Download Grails : " sudo add-apt-repository ppa:groovy-dev/grails sudo apt-get update sudo apt-get install grails #to add grails 2.0.0 sudo apt-get install grails-2.0.0 #to add any grails 1.3.x sudo apt-get install grails-1.3.x #to add grails 1.2.5 sudo apt-get install grails-1.2.5 #switch between versions sudo update-alternatives --config grails" 'via Blog this'

ubuntu 11.10 + hudson + nexus + redmine 1. ubuntu server install 2. svn, maven, apache2 sudo apt-get install subversion, maven2, apache2 3. redmine install( http://www.redmine.org/projects/redmine/wiki/HowTo_Install_Redmine_in_Ubuntu ) sudo apt-get install redmine libapache2-mod-passenger sudo ln -s /usr/share/redmine/public /var/www/redmine sudo vi /etc/apache2/mods-available/passenger.conf --> add PassengerDefaultUser www-data sudo vi /etc/apache2/sites-enabled/redmine --> add RailsBaseURI /redmine PassengerResolveSymlinksInDocumentRoot on sudo a2enmod passenger sudo service apache2 restart 4. nexus install sudo apt-get install python-software-properties sudo add-apt-repository "deb http://archive.canonical.com/ lucid partner" sudo add-apt-repository "deb http://build.discursive.com/apt/ lucid main" sudo apt-get update sudo apt-get install nexus-oss 5. hudson install sudo sh -c "echo ...

특정 서비스의 로딩을 지연시키는 방법 예시 ) oracle 서비스 로딩 전까지 tomcat 띄우는 것 지연시키기  ( 오라클 서비스가 뜬 후에 tomcat 띄우기 ) 만들려는 종속성이 아직 없는지 먼저 확인해야 합니다. 다음은 기본 구성에 이미 있는 가장 일반적인 몇 가지 종속성입니다.  서비스 종속 대상 Alerter LanmanWorkstation Browser LanmanWorkstation, LanmanServer, LmHosts ClipSrv NetDDE DHCP Afd, NetBT, TCP/IP Messenger LanmanWorkstation, NetBIOS NetBT TCP/IP NetDDE NetDDEDSDM NetLogon LanmanWorkstation, LmHosts Parallel Parport Replicator LanmanServer, LanmanWorkstation 서비스의 레지스트리 하위 키는 다음 경로에 있으며 서비스가 로드되는 방법을 제어할 수 있습니다. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\<Service name> 경고  레지스트리 편집기를 잘못 사용하면 심각한 문제가 발생할 수 있으며 문제를 해결하기 위해 운영 체제를 다시 설치해야 할 수도 있습니다. Microsoft는 레지스트리 편집기를 잘못 사용하여 발생하는 문제에 대해 해결을 보증하지 않습니다. 레지스트리 편집기 사용에 따른 모든 책임은 사용자에게 있습니다. 새 종속성을 만들려면 지연시킬 서비스를 나타내는 하위 키를 선택하고  편집 을 누른 다음  값 추가 를 누릅니다. 데이터 형식이 REG_MULTI_SZ인 새로운 값 이름 "DependOnService"(인용 부호 제외)를 만든 다음  확인 을 누릅니다.  데이터  대화 상자가 나타나면 이 서비스 전에 시작할 서비스 ...

SB-Projects: IR Remote Control : IR Remote Control Theory The cheapest way to remotely control a device within a visible range is via Infra-Red light. Almost all audio and video equipment can be controlled this way nowadays. Due to this wide spread use the required components are quite cheap, thus making it ideal for us hobbyists to use IR control for our own projects. This part of my knowledge base will explain the theory of operation of IR remote control, and some of the protocols that are in use in consumer electronics. Infra-Red Light Infra-Red actually is normal light with a particular colour. We humans can't see this colour because its wave length of 950nm is below the visible spectrum. That's one of the reasons why IR is chosen for remote control purposes, we want to use it but we're not interested in seeing it. Another reason is because IR LEDs are quite easy to make, and therefore can be very cheap. Although we humans can't see the Infra-Red light e...

tutorials:learn:sensors:ir.html [AdaWiki] : What is an IR detection sensor? IR detectors are little microchips with a photocell that are tuned to listen to infrared light. They are almost always used for remote control detection - every TV and DVD player has one of these in the front to listen for the IR signal from the clicker. Inside the remote control is a matching IR LED, which emits IR pulses to tell the TV to turn on, off or change channels. IR light is not visible to the human eye, which means it takes a little more work to test a setup. There are a few difference between these and say a CdS Photocells : IR detectors are specially filtered for Infrared light, they are not good at detecting visible light. On the other hand, photocells are good at detecting yellow/green visible light, not good at IR light IR detectors have a demodulator inside that looks for modulated IR at 38 KHz. Just shining an IR LED wont be detected, it has to be PWM blinking at 38KHz. Pho...