What does the script do?

1. Uses .getMonth() method to call months (from 0 to 11)
2. Uses switch statement to switch to current month’s stylesheet (uses server’s time)
3. Adds the stylesheet’s line (i.e. <link rel=”stylesheet” type=”text/css” media=”all” href=”http://the-path/to-your/stylesheets/folder/january.css” />) to the website’s <header> section
4. In case month hasn’t been detected (odd!) script will use default WP stylesheet

This is really it.

Installation

1. Download the css-by-month.js script (Right-click > Save link as…)
2. Open the script and edit the path for each stylesheet (the href=”http://the-path/to-your/stylesheets/folder/january.css” part).
3. Upload the script to your theme’s js folder (preferably)
4. Comment out the current stylesheet line the header.php file of your WP theme. Here is the line before commenting it out
   <link id="stylesheet-rotate" rel="stylesheet" type="text/css" media="all" href="<?php bloginfo( 'stylesheet_url' ); ?>" />
   and this is how does it look after commenting it out
   <!--<link id="stylesheet-rotate" rel="stylesheet" type="text/css" media="all" href="<?php bloginfo( 'stylesheet_url' ); ?>" />-->
5. Bellow that line add following line that will call our external JavaScript file css-by-month.js
   <script src="http://the-path/to-your/javascripts/folder/css-by-month.js"></script>
6. Save the changes and refresh the website. If your stylesheet for the current month is different from default one, you must see the changes instantly.

Feel free to share your suggestions and solutions!

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Dr.Web Anti-Virus for Linux © is an anti-virus solution designed to help users of computers running GNU/Linux protect their machines from viruses and other types of threats. The core components of the program (anti-virus engine and virus databases) are not only extremely effective and resource-sparing, but also cross-platform, which allows specialists in Doctor Web to create outstanding anti-virus solutions for different operating systems. Components of Dr.Web Anti-Virus for Linux are constantly updated and virus databases are supplemented with new signatures to assure up-to-date protection. Also, a heuristic analyser is used for additional protection against unknown viruses

1. Installation

2. Adjusting SELinux

3. Removal

4. Gallery

Installing Dr.Web Anti-virus

You can install Dr.Web antivirus by running *.run file which you can download from Dr.Web website or by using old good yum. We’ll use yum method in this tutorial. Luckily, we don’t need to use DazukoFS virtual device driver for Dr. Web antivirus. First of all we must add Dr. Web repositories to Fedora’s software source lists.

• Open the Terminal (Applications > System Tools > Terminal)
• Use this command to create and open file dr.web.repo

sudo gedit /etc/yum.repos.d/dr.web.repo

• add these lines and save the file:

For 32 bit system:

[drweb]
name=DrWeb-stable
baseurl=http://officeshield.drweb.com/drweb/el5/stable/i386/
gpgcheck=1
enabled=1
gpgkey=http://officeshield.drweb.com/drweb/drweb.key

For 64 bit system:

[drweb]
name=DrWeb-stable
baseurl=http://officeshield.drweb.com/drweb/el5/stable/x86_64/
gpgcheck=1
enabled=1
gpgkey=http://officeshield.drweb.com/drweb/drweb.key

•  Update sources with the new repositories

sudo yum update

•  Make sure you have required packages on your system before to install Dr.Web

sudo yum install libglade2 unzip

• And finally installation of Dr.Web antivirus packages

sudo yum install drweb-cc

SELinux configuration

SELinux (Security Enhanced Linux) is enabled on Fedora by default. You’ll find that most people recommends to keep it enabled. Unfortunately, Dr.Web wont work correctly with SELinux enabled until some rules are not adjusted. Probably the quickest way to do that and still keep SELinux running would be to set allow_execheap (Memory Protection) value to on. However, an official warning says “Allow unconfined executables to make their heap memory executable. Doing this is a really bad idea. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla“, so please keep that in mind.

sudo setsebool -P allow_execheap=1

• Check if value of allow_execheap is set to on

sudo /usr/sbin/getsebool -a | grep allow_execheap

• Reboot your machine

reboot

Removing Dr.Web Anti-virus

It’s very simple to remove Dr.Web. Open Terminal and execute this command

sudo yum remove drweb-cc

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Related posts:

1. Installing OpenERP 6 Business Management System on Linux Fedora 16
2. Installing Druva inSync (laptop backup solution) Server & Client on Fedora 16
3. Studying Computing – Installation of Bluefish (HTML/CSS Editor) and Java learning environment (BlueJ) on a Linux machine (Fedora)

Druva inSync is a simple and non-intrusive enterprise laptop backup solution to protect corporate data for office and remote users. It uses global data deduplication to save 90% in bandwidth and storage, and provides instant data access over PC, web, smartphone and tablets.

 This simple tutorial will show how to install Druva inSync on Fedora 16 (Verne, i686).

1. Installation

2. Configuration of inSync Server

3. Configuration of inSync Client

4. Uninstallation

5. Gallery

Installation

First thing you have to do is to download Server and Client RPM packages from druva.com. At the time of writing this guide it was versions 4.5 and 4.1 respectively.
OK, so once you saved these somewhere on your hard drive, simply double click on inSync-Server-Professional-Installer package first and choose Install. You will be asked for root password so make sure you know it. Do the same with inSync-Client-Installer package.

Configuration

Now we must configure Web Administration account, because inSync Server is configured using web interface. We will simply set username and password for web admin account using this script (copy and paste it to your Terminal window):

sudo /opt/Druva/inSyncServer/sbin/insync-config.sh

From now on you can access Druva inSync Control Panel using this URL: http://localhost:6065. Enter your email address and password and you will be redirected to the home page of Control Panel.

Click on green button Open Control Panel to enter an area where you can set various parameters of your backup server.

Before to create a user we must create a storage. In other words – the folder where our backups will get stored. To achieve this use this command to create a new folder which we will be using for our backups and set the right permissions for this folder (use whatever folder name and location you want)

mkdir /usr/local/backups

sudo chown insyncserver:insyncserver /usr/local/backups

Now go to Management > Storage > Create New Storage choose the folder you created as your Data folder. You can change more parameters there too.

We are ready to create a user now. Go to Management > Users > Create and define your user’s parameters. Should you wish to send Authentication Key by email, first you have to configure SMTP parameters (Settings > SMTP). By default Authentication Key will be saved on a desktop.

Now it’s the time to load this key to inSync Client. Go to Applications > System Tools and click on inSync Client. On a top right corner of the screen you will notice green Druva icon with the yellow exclamation mark what means, that Authentication Key is not loaded. Click left once on the icon and choose Load Key on a dialogue that appears. Choose the key you have saved few steps before. Now you have to see nice green icon.

Right click on it and pick Configure option. Go through the available options and create the backup routine which suits your needs. Backups will be created in the intervals you chose, but you also can start the process manually by choosing Sync Now option.

Uninstallation

Uninstall Druva inSync Server and Client using these commands:

• Client - Find what software version are you using:

rpm -qa | grep druva-insync-client

• Remove Client’s package (change the version to the one you have):

rpm -e inSync-Server-Professional-Installer-ver-4.5-r6987.i386.rpm

• Server:

rpm -qa | grep insync-server-professional

• Remove Server’s package (change the version to the one you have):

sudo rpm -e druva-insync-server-professional-4.5-6987.1092.i386

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Related posts:

1. Installing OpenERP 6 Business Management System on Linux Fedora 16

OpenERP is a comprehensive suite of business applications including Sales, CRM, Project management, Warehouse management, Manufacturing, Financial management and Human Resources just to name a few. Over 700 OpenERP modules are available on Launchpad.

Installation stages:

1. PostgreSQL Server Installation and Configuration
2. OpenERP Server Installation
3. OpenERP Client Installation
4. OpenERP Web Installation
5. OpenERP Configuration
6. Installation of pgAdmin 3 (optional)
7. Gallery

System used:

• Linux Fedora 16 (32bit), PostgresSQL 9.1, Python 2.7, OpenERP 6.0.3.
• SElinux disabled.

PostgreSQL Server Installation and Configuration

 Installation

• Go to Applications > System Tools > Add/Remove Software, type postgresql-server into search  field and press Find OR go to Applications > System Tools > Terminal and type in this command to get PostgreSQL server installed:

sudo yum install postgresql-server postgresql

If you have a problems to run this command saying that your user is not on sudoers file, then you must apply these little changes to sudoers file:

Log in as root

su -

and use this command

visudo

Add your username under root’s line:
[...]
#Allow root to run any commands anywhere
root ALL=(ALL) ALL
donatas ALL=(ALL) ALL
[...]

• Select package postgresql-server-9.x.x-x.fc16 and click on Apply. System will offer you two extra packages – postgresql and postgresql-libs – select Continue to continue. You also will be asked to provide root’s password.

•  After installing the packages, a database needs to be initialized and configured. To do this use Terminal (in fact, do not close current Terminal window  during the installation process). First of all, log in as posgresql user using command

su prostgres

and then initialize the database using command

sudo initdb /var/lib/pgsql/data

• The following commands will start PostgreSQL server and check for running PostgreSQL processes:

sudo service postgresql start

ps -eZ | grep postgres

• Add postgresql server to startup list:

sudo chkconfig --level 235 postgresql on

 Configuration

• After installation of PostgreSQL is finished, we must create a PostgreSQL user. It have to be the same user as your system user, in other words, be called the same name. In my case it’s user donatas. This user will be the owner of all tables created by OpenERP.

su postgres

createuser donatas NOTE: use the name of your system user instead of donatas!

Shall the new role be a superuser? (y/n) y

• Let’s now check what tables has been created so far:

psql -l

• If you can see the table template1 on the list, run the following command to use this table

psql template1

and this command to grant an access to your newly created PostgreSQL user (in this case user donatas with the password your-very_secret-password (NOTE: be creative and choose your own password!))

alter role donatas with password 'your-very_secret-password';

and get back to user’s shell

\q

exit

• Changes to PostgreSQL configuration file. Open file pg_hba.conf using your preferred text editor

sudo vi /var/lib/pgsql/data/pg_hba.conf

and change following lines to

[...]
# TYPE  DATABASE        USER            ADDRESS                 METHOD
# "local" is for Unix domain socket connections only
local   all             all                                     ident
# IPv4 local connections:
host    all             all             127.0.0.1/32            ident
# IPv6 local connections:
host    all             all             ::1/128                 ident
[...]

I assume that you know how to use your favourite text editor, but if not, you can ask me for a help using comments. Save the file and restart PostgreSQL Server

sudo service postgresql restart

 NOTE: No OpenERP databases will be created during installation. It will be possible to do through the OpenERP interface (either Client or Web)

OpenERP Server Installation

•  Let’s first install required Python libraries:

yum install python-psycopg2 python-lxml PyXML python-setuptools libxslt-python pytz python-matplotlib python-mako python-dateutil python-psycopg2 pychart pydot python-reportlab python-devel python-imaging python-vobject hippo-canvas-python mx

easy_install PyYaml

• Now we can download OpenERP Server. At the time of writing this article it was version 6.0.3. We’ll download the package, extract it, jump to the installation folder and run installation script.

wget http://www.openerp.com/download/stable/source/openerp-server-6.0.3.tar.gz

tar -xzf openerp-server-6.0.3.tar.gz

cd openerp-server-6.0.3

sudo python setup.py install

Installation process should take a place.

Installing OpenERP Client

• Very similar way is used to install OpenERP Client

sudo yum install pygtk2 glade3 pydot python-dateutil python-matplotlib sudo yum install pygtk2 glade3 pydot python-dateutil python-matplotlib

wget http://www.openerp.com/download/stable/source/openerp-client-6.0.3.tar.gz

tar -xzf openerp-client-6.0.3.tar.gz

cd openerp-client-6.0.3

sudo python setup.py install

OpenERP Web Installation

• And quite the same steps for Web client installation too

sudo yum install python python-devel make automake gcc gcc-c++ kernel-devel byacc flashplugin-nonfree

wget http://www.openerp.com/download/stable/source/openerp-web-6.0.3.tar.gz

tar -xzf openerp-web-6.0.3.tar.gz

cd openerp-web-6.0.3

sudo python setup.py install

OpenERP Configuration

I’ll try to make this part as easy to follow as I can.

Well, OpenERP is already installed. Now we need to tell Fedora to start it up at boot. For that we need to create boot script for Server and Web client and also to add some changes to their configuration files.

Server Configuration

• OpenERP Server’s configuration file  .openerp_serverrc is located at your user’s home directory, so let’s access it first

cd /home/donatas/

and open it in terminal with the favourite editor

sudo vi .openerp_serverrc

The lines you need to change in this file:

[...]
admin_passwd = yourDBadminPassword
db_password = your-very_secret-password
db_port = 5432
db_user = donatas
[...]

Save the file and quit.

Start up

Because of some incompatibilities between systemd and SysV, like “Services are executed in completely clean execution contexts, no context of the invoking user session is inherited. Not even $HOME or similar are set. Init scripts depending on these will not work correctly. “, I decided to use different start up options here.

• Lets first get back our old good rc.local and put two start up commands there:

sudo vi /etc/rc.d/rc.local

Make sure your file looks like this, but don’t forget to change donatas to your system user name!

#!/bin/sh
su - donatas -c "/usr/bin/openerp-server --config=/home/donatas/.openerp_serverrc" &
su - donatas -c "/usr/bin/openerp-web" &

Save the file and quit your editor.

Make rc.local file executable

sudo chmod a+x /etc/rc.d/rc.local

Installation of pgAdmin 3 (optional)

pgAdmin III is a powerful administration and development platform for the PostgreSQL database, free for any use.

To install pgAdmin 3 use this command in Terminal

sudo yum install pgadmin3

OR find it on Applications > System Tools > Add/Remove Software.

To run pgAdmin use this path: Applications > Programming

Run OpenERP

Now you can access OpenERP Web client through your browser

http://localhost:8080

and create new databases using password from admin_passwd line

OpenERP Client can be launched using this command in Terminal

/usr/bin/openerp-client

Gallery

Here are some screenshots of OpenERP being up and running on Fedora 16

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1. Studying Computing – Installation of Bluefish (HTML/CSS Editor) and Java learning environment (BlueJ) on a Linux machine (Fedora)

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Related posts:

1. Studying Computing – Installation of Bluefish (HTML/CSS Editor) and Java learning environment (BlueJ) on a Linux machine (Fedora)

In this topic I’m not covering installation of any Linux distribution, however, you can find a very useful and easy to follow guides on HowtoForge.com website. The system I’m using is Linux Fedora 16 i686 (32 bit), but very similar instructions should apply for other Red Hat based Linux distributions, such as CentOS, Red Hat or Yellow Dog Linux.

Web Development

Installing Bluefish

It’s very easy to install Bluefish editor on Fedora. For me it was important to be able to manage HTML5 and CSS3, so you will be able to do it with this application and much more.

1. Navigate to Applications > System Tools > Add/Remove Software
2. In a search field type bluefish and press Find
3. Select “GTK2 web development application for experienced users” (bluefish-2.0.3-4-fc16) package and press Apply. Required package will be downloaded and installed on system.
4. You will find Bluefish application on a top menu Applications > Programming > Bluefish Editor

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Programming

Installing Java SE Development Kit 7

In order to use BlueJ, we need to have JDK6 or JDK7 installed on our system. Fedora has it’s native Java package OpenJDK 6 installed, but as long as I now, it is not recommended to use it with BlueJ. But you might try and comment here later So, here are the installation steps:

1.  Download JDK 7 package here: http://download.oracle.com/otn-pub/java/jdk/7u1-b08/jdk-7u1-linux-i586.rpm. First you must accept the Oracle Binary Code License Agreement for Java SE to download this software. Because my system is Red Hat based and it uses 32 bit architecture, I have to choose first package on a list “Linux x86 RPM”. To check what Linux distribution and architecture are you running, simply open Terminal (Applications > System Tools > Terminal) and type command uname -a. You will get something like this “Linux localhost.localdomain 3.1.0-7.fc16.i686 #1 SMP Tue Nov 1 21:00:16 UTC 2011 i686 i686 i386 GNU/Linux”, where fc16 stands for Fedora 16 and i686 basically means that this distribution runs on x86 machine.
2. After clicking this link you should get download dialogue asking what you want to do next. Choose “Open with: Software install (default)”and press OK. You also will be asked for a superuser password once download finishes and installation process will take a place. You should know it or al least the person who installed the system will.
3. Executable JDK 7 files will be placed here /usr/java/jdkversion/bin/. I.e., my path is this: /usr/java/jdk1.7.0_01/bin/.

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Installing BlueJ on Linux

Since BlueJ does not provide Linux installation instructions for us, we will use Unix ones:

1.  Download BlueJ .jar file (al other systems): http://www.bluej.org/download/download.html, in my case it was version 3.06. Save it wherever you want. By default it will go to /home/yourusername/Downloads directory.
2. Open Terminal (Applications > System Tools > Terminal) and run installation using this command : /usr/java/jdkversion/bin/java -jar /path/to/bluejjarfile/bluej-version.jar. In my case it was /usr/java/jdk1.7.0_01/bin/java -jar /home/donatas/Downloads/bluej-306.jar
3. You will see BlueJ Installer window. Check that paths are correct and press Install.
4. To run BlueJ and to check if it works use these commands on your Terminal:
• To get to folder where BlueJ is installed: cd /home/yourusername/bluej. I. e. cd /home/donatas/bluej
• To run BlueJ execution script: sh ./bluej. If you don’t want to run applications this way, then you can check this tutorial how to add or remove menu items on Fedora.

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This is it! It should be enough to study Web Development and Java programming at University of Brighton at first semester

There is also a Database module and you can setup LAMP (Linux, Apache, MySQL and PHP) on your machine fairly easy. One of many articles how to achieve this can be found here: http://www.howtoforge.com/installing-apache2-with-php5-and-mysql-support-on-fedora-15-lamp

Enjoy your studies!

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