Developer tips and tricks.

In liferay many services require comapanyId. In lifeay company means portal instance. You can find this easily. Get comapanyId in code: PortalUtil.getDefaultCompanyId(); this give you default companyId. PortalUtil.getCompanyId(request); here request means HttpServletRequest. PortalUtil.getCompanyId(portletRequest);here portletRequest means any portletRequest(Render,Action or Resource).  ThemeDisplay themeDisplay=(ThemeDisplay)request.getAttribute(WebKeys.THEME_DISPLAY);themeDisplay.getCompanyId();  Get current companyId from specific thread local storage by:             CompanyThreadLocal.getCompanyId(); Get comapanyId manually: To find the company ID (portal instance ID), follow these steps: 1/ Sign into portal as admin user 2/ Navigation the Portal Instances admin page Navigation Path is "Dockbar > Admin > Control Panel > (Configuration) Portal Instances 3/ Review first column  "Instance ID" The i...

Edit ~/.bashrc Open terminal and execute> $ sudo gedit .bashrc Above command open .bashrc file in edit mode. Now add the below two lines: ANT_OPTS="-Xmx1024m -XX:MaxPermSize=256m" export ANT_OPTS Now save the file and close terminal. Enjoy......

In this tutorial i will show you easy ways to backup and restore the data in your MySQL database. Back up From the Command Line:   Here is the proper  syntax to backup in command> $ mysqldump --opt -u [uname] -p[pass] [dbname] > [backupfile.sql] Here: [uname] Your database username [pass] The password for your database (note there is no space between -p and the password) [dbname] The name of your database [backupfile.sql] The filename for your database backup [--opt] The mysqldump option  For example, to backup a database named 'ranger' with the username 'root' and with password 'root' to a file ranger_backup.sql, using command: $ mysqldump -uroot -proot ranger > ranger_backup.sql   Above command store your back file in home directory. If you want to backup in specific directory then go to your desired directory and execute the above command.   With mysqldump command you can specify certain tables of ...

Securing MongoDB with Authentication and Authorization: Step 1) Login using shell and Create an admin account: Open terminal and login using below command>  mongo  Switch to admin db using below command> use admin;    Create Admin user using below command> db.createUser({ user : "admin", pwd : "pass", roles: [ { role: 'root', db: 'admin' } ] });   Now Give grand Roles to Admin User using below command:   db.grantRolesToUser( " admin ", [{ "role" : "readWriteAnyDatabase", "db" : "admin" },{ role: "userAdminAnyDatabase", db: "admin" }] ) Step 2) Test your admin account using below command> mongo -u admin -p pass --authenticationDatabase admin   Step 4) Force authorization  FOR MONGODB 3.0 AND ABOVE add these lines in /etc/mongod.conf>  security:   authorization: enabled FOR MONGO...

Step 1: If you install any packages of mongodb yet, firstly remove all. To remove all existing packages execute the below command: sudo apt-get purge mongodb-org sudo apt-get autoremove Remove the old mongodb source list you created in below folder. sudo rm /etc/apt/sources.list.d/   Remove db and logs: sudo rm -r /var/lib/mongodb sudo rm -r /var/log/mongodb Step 2: Add debian repository: echo "deb http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.0 main" |  sudo tee /etc/apt/sources.list.d/mongodb-org-3.0.list   Step 3: Update and install: sudo apt-get update sudo apt-get install -y mongodb-org Step 4: Start mongo db: sudo service mongod start or systemctl start mongod  Step 5: Configure MongoDB username and password: open mongo shell : (cntrl+alt+t) open termianl and type > mongo   then the shell is open. then switch the database typing> use admin then Create the r...

Follow the below blog. How To Use Apache HTTP Server As Reverse-Proxy Using mod_proxy Extension.

Prerequisites: You have to install apache2 in your os. For this follow my previous blog Install apache2 in Ubuntu.   Step 1: Create new host. Open terminal(ctrl+alt+t) and paste below code > sudo gedit /etc/hosts Now edit the file. Means add new host name and port.Example add below line > 127.0.1.1    example.com Now save and close the file. Step 2: Create the Directory Structure. Create new folder in /var/www/    directory . For this execute the below line> sudo mkdir -p /var/www/ example.com /public_html   Step 3:  Grant Permissions.Now change permissions to enable regular user to modify files in our web directories. For this execute the below line> sudo chown -R $USER:$USER /var/www/ example.com /public_html   We should also modify our permissions a little bit to ensure that read access is permitted to the general web directory. For this execute the below line > sudo chmod -R ...

Apache Ofbiz developer need write script to start and stop ofbiz server as Ubuntu service. In my projects production and test server management i need this, and after spending few times  i got this. Here below i share my experience. The script code given below. #!/bin/bash -e ### BEGIN INIT INFO # Provides:          ofbiz # Required-Start:    $syslog $time $remote_fs # Required-Stop:     $syslog $time $remote_fs # Default-Start:     2 3 4 5 # Default-Stop:      0 1 6 # Short-Description: start Apache Ofbiz # Description:       Debian init script for the Apache Ofbiz, #                    the open source enterprise automation software ### END INIT INFO set -e ############################################################...

sudo apt-get update sudo apt-get install apache2 Restart apache so that all of the changes take effect: sudo service apache2 restart

Step 1: To enable cross origin in apache2 you need enable mod_headers . To ensure that it's enabled by run below command in terminal. a2enmod headers   Step 2: Next add the following line inside the sections of your server config (usually located in a *.conf file, such as httpd.conf or apache.conf), or within a .htaccess file.   Go to /etc/apache2   Then copy paste the below line: sudo gedit apache2.conf Add below lines: <IfModule mod_headers.c> Header always set Access-Control-Allow-Origin "*" Header always set Access-Control-Allow-Methods "POST, GET, OPTIONS, PUT, DELETE" Header always set Access-Control-Allow-Headers "access-control-allow-origin, authorization,content-Type,x-requested-with,accept,origin,access-control-request-method,access-control-request-headers" </IfModule> Finally save the apache2.conf file and reload the apache service running below code:   sudo service apache2 reload   Enjoy.. ...

Create the branch on your local machine and switch in this branch : $ git checkout -b [name_of_your_new_branch] Push the branch on github : $ git push origin [name_of_your_new_branch] switch to new branch or master $ git checkout [branch name] Delete a branch on your local filesystem :   $ git branch -d [name_of_your_new_branch]   delete branch from server $ git push origin :[name_of_your_new_branch] Enjoy!!!

To install git in Ubuntu you can use apt package management tools. Open terminal (ctrl+alt+t) and paste the bellow commands. sudo apt-get update sudo apt-get install git  Enjoy.........

First You have to create a service for start openoffice. I have created a service under /etc/init.d it called OpenOffice. Script looks like #!/bin/bash     ### BEGIN INIT INFO # Provides:          dovecot # Required-Start:    $local_fs $network # Required-Stop:     $local_fs # Default-Start:     2 3 4 5 # Default-Stop:      0 1 6 # Short-Description: dovecot # Description:       dovecot pop & imap daemon ### END INIT INFO     # openoffice.org headless server script     #     # chkconfig: 2345 80 30     # description: headless openoffice server script     # processname: openoffice     #     # Author: Vic Vijayakumar     # Modified by Federico Ch. Tomasczik     #   ...

Follow below steps: 1. First to download openoffice open terminal and execute. wget http://freefr.dl.sourceforge.net/project/openofficeorg.mirror/4.0.0/binaries/en-US/Apache_OpenOffice_4.0.0_Linux_x86-64_install-deb_en-US.tar.gz 2. Go to download folder. execute  tar -xvzf Apache_OpenOffice_4.0.0_Linux_x86-64_install-deb_en-US.tar.gz 3. Install the .deb files by typing sudo dpkg -i *.deb 4. Got to /opt/openoffice4/program$ execute sudo sh soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" -nofirststartwizard & 5. Go to liferay control panel>server administrator>external services and then enable open office with port 8100 Enjoy..