SAXParseException hadoop-2.7.2

Caused by: org.xml.sax.SAXParseException; systemId: file:/usr/local/hadoop-2.7.2/etc/hadoop/core-site.xml; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog

solution :

check xml configuration of the file.
cause due not proper closing of tag

hadoop-env.sh missing in hadoop 2.7

hadoop-env.sh missing in hadoop 2.7

earlier location :

/conf/hadoop-env.sh

location is changed to

/etc/hadoop/hadoop-env.sh

install grunt server and start the grunt server

install grunt server and start the grunt server

1) install grunt server.
cmd : npm install -g grunt-cli

2) start grunt server.
note : after creation of yeoman project go to directory
cmd : grunt server

angularjs project scaffolding using yeoman

create a project using yo
prerequisite
a) install npm on your box.

1) install yeoman online using npm command.
cmd : npm install -g yo
ref : github (https://github.com/yeoman/yo)
2) create the project scaffolding using yo command.
note : create a project folder "voiceapp" and move to the directory.
cmd : yo  or (yo angular)
3) We get set of options, choose option based on requirement. here we choose angular.
There are some experimental feature like gulp/saas, based on requirement choose yes or no.
a) angular
b) webapp
..
4) include bootstrap choose yes option.
>( ) angular-animate.js
 ( ) angular-aria.js
 ( ) angular-cookies.js
 (*) angular-resource.js
 ( ) angular-messages.js
 (*) angular-route.js
 (*) angular-sanitize.js
 ( ) angular-touch.js

choose the following angular(resource/route/sanitize).

5) skip if there any option when installation.

angular.js:13550 Error: [ng:areq] Argument 'MynameCtrl' is not a function, got undefined

angular.js:13550 Error: [ng:areq] Argument 'MynameCtrl' is not a function, got undefined

solution :

include controller.js in index file or the required reference file where you are calling

Genrating project scaffolding for angular js using Yeoman.

step 1.
a) install nodejs window/linux machine or based on the os you have.
ref : nodejs
step 2.
a) install Yeoman ,grunt,bower.
ref : Yeoman
cmd :  install yo.
b) From the given choose angular js and click next.

note :
a) Yeoman : for generating project scaffolding.
b) bower : package manager.
c) grunt : to perform repetitive task, minification,unit testing.

how to Enable EPEL Repository for RHEL linux.

how to Enable EPEL Repository for RHEL linux.
EPEL (Extra Packages for Enterprise Linux)
ref : linux