How-To Synchronize Files Using “rsync” Command

February 22, 2010 11 comments

Placing several backups in a safe place and keeping files synchronized either locally or remotely is an urgent necessity for all users whose everyday tasks solely rely on the use of computers. Hard drives get damaged, files get deleted, memory sticks get lost …etc. You have to make synchronized backups of your stuff!

Many backup applications are there. Some are GUI-based, while others run through the command line. Personally, I prefer to use the command line due to its high flexibility. One of the most widely used command for synchronization purposes has been the rsync command.

By the way, one of the reasons behind my migration from Windows to Linux was the lack of the FREE synchronization tools that run under Windows. Anyway, if I start talking about this again I won’t finish, and I already wrote about this in an earlier post. So, let’s start talking about “rsync” command.

rsync

rsync is an open source utility that provides fast incremental file transfer. “rsync” is freely available under the GNU General Public License

Features

Features of rsync are already mentioned in different sites, but this is how I see it:

  • Incremental File Transfer
  • Compression while Transferring
  • Synchronizing Remote Machines
  • Encrypted and Secure
  • Better Alternative to FTP
  • Very Flexible

Uses

If you have a look at the rsync manual you will notice a huge number of arguments, and that might discourage you from using the command. Well, don’t worry! All those arguments are for advanced usages, and as the synchronization process gets more complex you will need to understand more arguments and when to use them; otherwise, you only need to used to little arguments to do you the job. Therefore , you will find yourself running the same command over and over with same arguments all the time.

Here is the Generic Syntax:

rsync [options] Src Dst

Where Src and Dst respectively are:

Src: Source location from where files will be synchronized.
Dst: Destination location to where files will be synchronized.

Src and Dst can hold these location combinations except for Remote to Remote directories:

Src Dst
Local Local
Local Remote
Remote Local
Local: "/directory"
Remote: "username@hostname:"

Note: Remote Directory will be the HOME directory of the username used at the Remote machine by default!

Full Sync

A full synchronization process implies what is in this table will take place:

Command Process Current Directory Sub-Directories
rsync Create Yes Yes
Update
Delete

A very frequently used arguments with “rsync” command:

rsync -avz -u --progress --delete Src Dst -n
-a Archive mode
-v Verbose mode
-z Compress while transferring files. This will make the transferring faster and will save the network bandwidth
-u Update files which are newer in the Src
--progress Show the transfer progress of each file while transferring
--delete Delete files from Dst if they don’t exist in Src
-n Preview mode. Changes won’t take effect till this argument is omitted
Sync, without Sub-Directories

One of the syncing tasks I perform on a daily basis is that I sometimes want to sync a certain directory without syncing the subdirectories. This is how I do it:

rsync -dvz -u --progress --delete Src Dst -n

If you want the same effect that the argument ‘-a’ have, such as preserving links, owner, group …etc. Then, this is another option:

rsync -dlptgoDvz -u --progress --delete Src Dst -n
Arguments Worthy Looking at
--exclude=PATTERN exclude files matching PATTERN
--include=PATTERN don’t exclude files matching PATTERN
--existing skip creating new files on receiver
--ignore-existing skip updating files that exist on receiver

Important Notes

  1. Synchronization process always works from Src to Dst. So, Any change in the Src will be reflected in the Dst.
  2. A probable confusing matter here is the deleted files. Just remember, a deleted file in the Src will be deleted from the Dst, but any file deleted from the Dst will be recreated from the Src while syncing!
  3. As a rule of thumb, always make the necessary modification in the Src then sync it with the Dst.
  4. Be careful with the Trailing Slash. If the Trailing Slash appears, then content of that directory will be synced, otherwise, that directory AND its content will be synced. Try it out and see what happens!

Too Many Arguments!!

If you found any difficulty in using the proper arguments of rsync command due to their numbers, then I suggest you start with GUI rsync Application called Grsync. The good thing about it is that it shows you the arguments that are going to be used to perform the synchronization process!

Categories: Linux/Unix Tags: , ,

How-To Set Up SVN and Trac

February 2, 2010 16 comments

What are SVN and Trac?

SVN: is a free/open-source Version Control System. Subversion (SVN) manages files and directories over time. Files are placed into a central repository and every change every made to the files or directories are remembered.

Trac: is an enhanced wiki and issue tracking system for software development projects. It provides a Graphical front end to SVN where diffs in files can be obtained. It cannot update the SVN repository. It simply provides a Project Management interface, wiki, ticketing system, and SVN front end.

Installation

sudo apt-get install apache2
sudo apt-get install subversion
sudo apt-get install libapache2-svn
sudo apt-get install trac
sudo apt-get install libapache2-mod-fastcgi libapache2-mod-fcgid

Setting Up SVN and Trac

To make things simple and flexible in case you want to make some changes in the future, configurations will be set in individual files, i.e. as virtual sites, then they will be enabled/disabled when needed.

1-Creating SVN Repository:

cd /var
sudo mkdir MyProjects
cd MyProjects
sudo mkdir svn
cd svn
sudo svnadmin create SVN_Project_01
sudo chown -R www-data.www-data /var/MyProjects

2-Setting Up Trac

cd /var/MyProjects/
sudo mkdir trac
cd trac
sudo trac-admin Trac_Project_01 initenv
-->Project Name [My Project]>
-->Database connection string [sqlite:db/trac.db] (choose defaults)
-->Repository type [svn]>
-->Path to repository [/path/to/repos]> /var/MyProjects/svn/SVN_Project_01
sudo chown -R www-data.www-data /var/MyProjects
sudo trac-admin /var/MyProjects/trac/Trac_Project_01 permission add username MILESTONE_ADMIN REPORT_ADMIN ROADMAP_ADMIN TICKET_ADMIN TRAC_ADMIN

Setting Up Apache:

At this stage, we need to secure the web access to the repository so only authorized persons who can modify it, enable the SSL mode so connection is encrypted, and modify apache configurations accordingly:

Securing Web Access

  1. Enable the Authenticated Access by adding a username and password:

    sudo htpasswd -cb /etc/apache2/passwords username password
    
  2. Enabling the SSL Module:
    Refer to this blog: How-To Enable SSL on Apache2 Server

Trac Configurations

Note: You will need to download the Trac package and link to the cgi-bin/trac.cgi and cgi-bin/trac.fcgi in the configuration.
In my case, this the path to these files after extracting:

ls /usr/local/Trac-0.11.6/cgi-bin

Create the following files or you may create one of them:

Track through CGI
cd /etc/apache2/sites-available/
cat > svn.cgi
##SVN

<Location /MyProjects/svn/SVN_Project_01>
	DAV svn
	SVNPath /var/MyProjects/svn/SVN_Project_01

	AuthType Basic
	AuthName "Subversion Repository - SVN_Project_01"
	AuthUserFile /etc/apache2/.htpasswd

#	<LimitExcept GET PROPFIND OPTIONS REPORT>
		Require valid-user
		SSLRequireSSL
#	</LimitExcept>
</Location>


##Trac

ScriptAlias /MyProjects/trac /usr/local/Trac-0.11.6/cgi-bin/trac.cgi
<Location /MyProjects/trac>
	SetEnv TRAC_ENV_PARENT_DIR /var/MyProjects/trac
</Location>

<Location "/MyProjects/trac">
        SSLRequireSSL
        AuthType Basic
        AuthName "Trac Login for Projectname Website"
        AuthUserFile /etc/apache2/.htpasswd
        Require valid-user
</Location>


<Location "/MyProjects/trac/Trac_Project_01/login">
	SSLRequireSSL
	AuthType Basic
	AuthName "Trac Login for Projectname Website"
	AuthUserFile /etc/apache2/.htpasswd
	Require valid-user
</Location>
Track through FCGI
cd /etc/apache2/sites-available/
cat > svn.fcgi
##SVN

<Location /MyProjects/svn/SVN_Project_01>
	DAV svn
	SVNPath /var/MyProjects/svn/SVN_Project_01

	AuthType Basic
	AuthName "Subversion Repository - SVN_Project_01"
	AuthUserFile /etc/apache2/.htpasswd

#	<LimitExcept GET PROPFIND OPTIONS REPORT>
		Require valid-user
		SSLRequireSSL
#	</LimitExcept>
</Location>



##Trac

ScriptAlias /MyProjects/trac /usr/local/Trac-0.11.6/cgi-bin/trac.fcgi
##fastcgi
#FastCgiConfig -initial-env TRAC_ENV=/var/MyProjects/trac/Trac_Project_01
#FastCgiConfig -initial-env TRAC_ENV_PARENT_DIR=/var/MyProjects/trac

##fcgi
DefaultInitEnv TRAC_ENV_PARENT_DIR /var/MyProjects/trac

#<Location "/MyProjects/trac">
	##fastcgi
	#SetEnv TRAC_ENV_PARENT_DIR "/var/MyProjects/trac"
	#SetEnv TRAC_ENV "/var/MyProjects/trac/Trac_Project_01"
	#AddHandler fastcgi-script .fcgi

	#AuthType Basic
        #AuthName "Trac Repository - Trac_Project_01"
        #AuthUserFile /etc/apache2/.htpasswd
	#Require valid-user
	#SSLRequireSSL
#</Location>

<Location "/MyProjects/trac/Trac_Project_01/login">
	SSLRequireSSL
	AuthType Basic
	AuthName "Trac Login for Projectname Website"
	AuthUserFile /etc/apache2/.htpasswd
	Require valid-user
</Location>

Track through FastCGI
cd /etc/apache2/sites-available/
cat > svn.fastcgi
##SVN

<Location /MyProjects/svn/SVN_Project_01>
	DAV svn
	SVNPath /var/MyProjects/svn/SVN_Project_01

	AuthType Basic
	AuthName "Subversion Repository - SVN_Project_01"
	AuthUserFile /etc/apache2/.htpasswd

#	<LimitExcept GET PROPFIND OPTIONS REPORT>
		Require valid-user
		SSLRequireSSL
#	</LimitExcept>
</Location>



##Trac

ScriptAlias /MyProjects/trac /usr/local/Trac-0.11.6/cgi-bin/trac.fcgi
#FastCgiConfig -initial-env TRAC_ENV=/var/MyProjects/trac/Trac_Project_01
FastCgiConfig -initial-env TRAC_ENV_PARENT_DIR=/var/MyProjects/trac

#DefaultInitEnv TRAC_ENV /var/MyProjects/trac/Trac_Project_01

<Location "/MyProjects/trac">
	#SetEnv TRAC_ENV_PARENT_DIR "/var/MyProjects/trac"
	#SetEnv TRAC_ENV "/var/MyProjects/trac/Trac_Project_01"
	AddHandler fastcgi-script .fcgi

	#AuthType Basic
        #AuthName "Subversion Repository - SVN_Project_01"
        #AuthUserFile /etc/apache2/.htpasswd
	#Require valid-user
	#SSLRequireSSL
</Location>

<Location "/MyProjects/trac/Trac_Project_01/login">
	SSLRequireSSL
	AuthType Basic
	AuthName "Trac Login for Projectname Website"
	AuthUserFile /etc/apache2/.htpasswd
	Require valid-user
</Location>
Track through Python
cd /etc/apache2/sites-available/
cat > svn.python
##SVN

<Location /MyProjects/svn/SVN_Project_01>
	DAV svn
	SVNPath /var/MyProjects/svn/SVN_Project_01
	
	AuthType Basic
	AuthName "Subversion Repository - SVN_Project_01"
	AuthUserFile /etc/apache2/.htpasswd
	
#	<LimitExcept GET PROPFIND OPTIONS REPORT>
		Require valid-user
		SSLRequireSSL
#	</LimitExcept>
</Location>


##Trac

<Location /MyProjects/trac>
	SetHandler mod_python
	PythonInterpreter main_interpreter
	PythonHandler trac.web.modpython_frontend
	PythonOption TracEnvParentDir /var/MyProjects/trac
	PythonOption TracUriRoot /MyProjects/trac
	
	#SSLRequireSSL
	#AuthType Basic
	#AuthName "Trac Login for Projectname Website"
	#AuthUserFile /etc/apache2/.htpasswd
	#Require valid-user
</Location>

<Location "/MyProjects/trac/Trac_Project_01/login">
	SSLRequireSSL
	AuthType Basic
	AuthName "Trac Login for Projectname Website"
	AuthUserFile /etc/apache2/.htpasswd
	Require valid-user
</Location>

After that, you will need to enable ONLY one of them:

sudo a2ensite svn.cgi

Or

sudo a2ensite svn.fcgi

Or

sudo a2ensite svn.fastcgi

Or

sudo a2ensite svn.python

Finally, reload apache server:

sudo /etc/init.d/apache2 reload

Try to open these links:
https://localhost/MyProjects/svn/SVN_Project_01
https://localhost/MyProjects/trac

Next

You will need to configure your prefered IDE with the created SVN repository if it supports the synchronization with SVN repositories. In my case as a Java/Java EE Developer, I’ ll refer to the most known open IDEs which are: NetBeans and Eclipse. SVN is just a little part of them to control versioning!

Hence, this would help you get a well managed and organized development environment!

___________________

References

https://help.ubuntu.com/community/UbuntuTracHowto
http://wiki.kartbuilding.net/index.php/Trac_and_SVN
http://trac.edgewall.org/wiki/TracGuide

How-To Enable SSL on Apache2 Server

January 13, 2010 2 comments

Why to Enable SSL Mode?

Without digressing too much in the Security topic, SSL (Secure Socket Layer) is a cryptographic protocol that provides security for communications over networks such as the Internet. Therefore, you will need such a protocol to protect your connection with the web server by encrypting the information being exchanged. So, if a sniffer drops into the connection then that information is not compromised. e.g. remotely logging in to your machine requires from you to submit your username and password. If the connection is not encrypted using one of the cryptographic protocols then such must-be-kept-secret information is exposed and imagine the impact on your system if such info was in somebody’s hand!

So, let’s discuss the steps of how to enable the SSL mode:

  1. Generate a Self-Signed Certificate
    cd /etc/apache2/
    sudo mkdir certs
    cd ./certs
    sudo openssl req -new -x509 -nodes -days 365 -out server.crt -keyout server.key
    
  2. Encrypt the Private Key (Optional)
    The way of doing it is by passing a “passphrase“:

    sudo openssl rsa -des3 -in server.key -out server.key
    

    Note: I tend not to do this step due to the fact that when Apache2 is restarted you will be asked to type the passphrase again. Therefore, I just change the key and certificate files permission so they are only read by Apache2!

  3. Enable the SSL Modules
    You can either enable the SSL Module by running these commands:

    sudo a2enmod ssl
    sudo /etc/init.d/apache2 restart
    

    OR if you are curious about what it does you can do the following steps instead:

    cd /etc/apache2/mods-enabled
    sudo ln -s /etc/apache2/mods-available/ssl.load ./
    sudo /etc/init.d/apache2 restart
    
  4. Create the SSL Site
    sudo pico /etc/apache2/sites-available/MySSL
    
    ##################################
    ##-->@Author Husain Al-Khamis<--##
    ##################################
    <VirtualHost "*:443">
            ServerAdmin webmaster@localhost
    
            DocumentRoot /var/www
    
            ##-->Me<--##
    
            SSLEngine on
            SSLCertificateFile /etc/apache2/certs/server.crt
            SSLCertificateKeyFile /etc/apache2/certs/server.key
    
            ##-->Me<--##
    
            <Directory "/">
                    Options FollowSymLinks
                    AllowOverride None
            </Directory>
            <Directory "/var/www/">
                    Options Indexes FollowSymLinks MultiViews
                    AllowOverride None
                    Order allow,deny
                    allow from all
            </Directory>
    
            ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
            <Directory "/usr/lib/cgi-bin">
                    AllowOverride None
                    Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
                    Order allow,deny
                    Allow from all
            </Directory>
    
            ErrorLog /var/log/apache2/error.log
    
            # Possible values include: debug, info, notice, warn, error, crit,
            # alert, emerg.
            LogLevel warn
    
            CustomLog /var/log/apache2/access.log combined
    
        Alias /doc/ "/usr/share/doc/"
        <Directory "/usr/share/doc/">
            Options Indexes MultiViews FollowSymLinks
            AllowOverride None
            Order deny,allow
            Deny from all
            Allow from 127.0.0.0/255.0.0.0 ::1/128
        </Directory>
    
  5. Listen on Port 443
    Open ports.conf:

    	sudo pico /etc/apache2/ports.conf
    	

    And add the following:

    	<IfModule mod_ssl.c>
    		# SSL name based virtual hosts are not yet supported, therefore no
    		# NameVirtualHost statement here
    		NameVirtualHost *:443
    		Listen 443
    	</IfModule>
    
  6. Enable the SSL Site
    Same as in step# 3, you can either perform these commands

    sudo a2ensite MySSL
    sudo /etc/init.d/apache2 restart
    

    OR alternatively, you can do it manually in this way:

    sudo pico /etc/apache2/apache2.conf
    

    And add the following to the end of it:

    # Include the secured host configurations:
    Include /etc/apache2/sites-available/MySSL
    

    Then, Restart Apache2:

    sudo /etc/init.d/apache2 restart
    

So, have a secure web surfing!

Celebrating Christmas OR Commemorating Ashura

The past 3 weeks, I was off-line for most of the time. “We are the Shiite Muslims community practice what is called the Ashura Rituals in the 1st month of every lunar/Islamic year” and I had to dedicate most of the time to this annual occasion.

I would say that usually everyone celebrates the new year with happiness and joy, but we celebrate our new year in every year with renewing the remembrance of martyrdom of Imam Hussayn ibn Ali (pbuh), the grandson of the holy prophet (pbuh&hf), what happened to him and his family in Karbala, learning life lessons from this tragedy, and understand how blood defeated sword in that unforgettable day, the day of Ashura in Kerbala…

We believe in Jesus Christ (pbuh) and in every prophet was sent before Jesus Christ (pbuh). Actually, one condition to be a Muslim is not only to believe in our holy prophet Muhammed (pbuh&hf) but also to believe in all prophets sent before him and one of them is Jesus Chris (pbuh). So, Jesus Christ (pbuh) is not only for the Christians he is for us too the Muslims.

Christians celebrate the Christmas day at the end of every Gregorian year, and It’s always our duty to congratulate the Christians celebrating the Christmas day, the day in which Jesus Chris (pbuh) was born by Virgin Mary (pbuh). So, it is commemorated with happiness.

But due to the fact that lately the end of Gregorian year coincided with the beginning of  Islamic/lunar year it wouldn’t be appropriate by us to celebrate with our brother Christians the Christmas day.

I would like to be deeply grateful to the Christians who condoled with us on the occasion of the Martyrdom of Hussayn ibn Ali (pbuh), the grandson of the prophet (pbuh&hf), and announced the cancellation of celebrating the Christmas day.

Now my wonder from the people claiming they are with the Islamic Nation and they have just announced that Ashura Day, the day in which Imam Hussayn ibn Ali (pbuh) the grandson of the prophet (pbuh&hf) was killed, must be the day of happiness and celebration.

When comparing those people to the Christians who actually have the official Christmas day and they have their right to celebrate the day, My wonder even becomes higher when they have just announced the cancellation of celebrating the Christmas day just to condole with us in the occasion of Ashura that coincided with the Christmas events.

How about Kofi Annan, the UN secretary, when he stated: “The words of Ali ibn Abi Talib, ‘O Malik! The people are either brothers in religion or your equal in creation’ must be adhered to by all organisations and it is a statement that all humanity must embrace.”

At the end, we have those claiming Islam, celebrating the days, in which grandsons of the holy prophet were killed, with happiness and joy, not only this but also killing people, Muslims and non-Muslims, around the world in the name of Islam aiming just to deform its real image. And, on the other side, we have the non-Muslims who knew what the real image about Islam is and incorporated some of its instructions in their every day life.

So, You Are The Judge!

Categories: MyDiary

How-To Fix Flash Incapability of Recognizing Mouse Clicks

December 12, 2009 3 comments


Upon upgrading to Ubuntu 9.10 Karmic Koala, some including me noticed that any Flash-containing website like YouTube.com then you can’t click on that Flash object. In other words, Flash is not recognizing mouse clicks.

It appeared that this was a bug that was reported here.

A workaround for such a bug has been put in place. So here are the workarounds as the official bug tracker suggested:

  1. WORKAROUND 1: Disable compiz
  2. WORKAROUND 2: Remove flashplugin-nonfree / flashplugin-installer and install from adobe
  3. WORKAROUND 3, and this is the one worked with me:
    • Open a terminal, or you can press Alt + F2, and type
    • gksudo gedit /usr/lib/nspluginwrapper/i386/linux/npviewer
    • Then add “export GDK_NATIVE_WINDOWS=1″ before the last line of text.
    • Save.
    • Restart your FireFox, or any application uses Flash.

So, This is it as far as I know!

Categories: Linux/Unix, Open-Source Tags: , ,

How-To Deploy Roller 4 on GlassFish V3

December 10, 2009 7 comments

I’ve just started blogging seriously. Many free blogging tool providers are available. Widely known are the WordPress and Blogger. For some reasons, I decided to use WordPress as my main blogging tool.

I’ve given some thoughts to start developing a Web-based Blogging Tool just to have some hands-on experience on the Web Development and Design process. Besides, as I advocate the Open Source Community I would like to make a humble contribution to this great community.

I was wondering which platform on which I should rely to start developing this project. From my notice, most web applications nowadays are developed in PHP. PHP has been used very widely by the public. Well, PHP is a very cool scripting language and I’ve always looked forward to learning it. But, as it is a top priority to my career path is to have a solid development background using Java/J2EE technology, I’ve decided to start a project for developing a Java Web-based Blogging Application. Fortunately, somebody already started developing such a project long time ago, since 2002. This application is sponsored by Apache Software Foundation and is called Roller Weblogger.

So, trying to make Roller up and running, we need to download a Java Web Server to be the deploying environment for Roller. You can download Tomcat and use it as a Web Server to deploy Roller. Refer to this Installation Guide to deploy Roller on Tomcat.

In my case, I decided to use GlassfishV3 due to the features and frameworks bundled with. Here, I’ll explain step by step how to install GlassfishV3, deploy Roller on it, and avoid a possible problem that might hinder the deployment process!

So, let’s start!

STEP 1: GlassfishV3

STEP 1.1: Download GlassfishV3

Download GlassFishV3 Prelude or Preview. Compare between them here.

Refer to Comment#:1

STEP 1.2: Install/Configure GlassfishV3

Install GlassfishV3 by simply running the script. It is not a big deal just follow the instructions!

STEP 1.3: Start GlassfishV3

Go to where Glassfish binary files are:

cd $GF_HOME/glassfish/bin
  • To start the domain:
    ./asadmin start-domain
  • To stop the domain:
    ./asadmin stop-domain

Or alternatively, I prefer to start/stop the server by running these: “log will be output to the screen, so you can monitor it

  • To start the server:
    ./startserv
  • To stop server:
    ./stopserv

Now, you can reach the Admin Console at:

For further details, have a look at the GlassfishV3 Quick Start Guide!

STEP 2: MySQL JDBC Connection

STEP 2.1: Download Connector/J

You will need to download the MySQL JDBC Connector to allow Roller interact with the MySQL Database Server. Here, I used the MySQL Connector/J 5.1.10.

Place the Connector/J in:

cp mysql-connector-java-5.1.10-bin.jar $GF_HOME/glassfish/lib/

STEP 2.2: Provide JNDI

In GlassfishV3:

  • Create JDBC Connection Pool: (Admin GUI -> Application Server -> Resources -> JDBC -> Connection Pools)

  • Create JDBC Resources (Admin GUI -> Application Server -> Resources -> JDBC -> JDBC Resources)

Restart Glassfish and Ping the JDBC Connection!

STEP 3: Roller 4

STEP 3.1: Download Roller

Download Roller from here.
For more detailed information about installation refer to the Roller Installation Guide!

STEP 3.2: Create Database
mysql -u root -p

password: *****
create database rollerdb;

grant all on rollerdb.* to scott@'%' identified by 'tiger';

grant all on rollerdb.* to scott@localhost identified by 'tiger';

quit
STEP 3.3: Create roller-custom.properties

To connect to the MySQL database you should create the roller-custom.properties file in either 2 ways “as far as I noticed“:

  • Roller will interact with database Directly:
    installation.type=auto
    database.configurationType=jdbc
    database.jdbc.driverClass=com.mysql.jdbc.Driver
    database.jdbc.connectionURL=jdbc:mysql://localhost:3306/rollerdb
    database.jdbc.username=scott
    database.jdbc.password=tiger
    
    mail.configurationType=properties
    mail.hostName=smtp-server.example.com
    mail.username=scott
    mail.password=tiger

    Place it in:

    mv roller-custom.properties $ROLLER_DIR/WEB-INF/classes/
  • Roller will interact with database through the JNDI:
    installation.type=auto
    database.configurationType=jndi
    database.jndi.name=jdbc/rollerdb
    
    mail.configurationType=jndi
    mail.jndi.name=mail/Session
    mail.configurationType=properties
    mail.hostName=smtp-server.example.com
    mail.username=scott
    mail.password=tiger

    Place it in:

    mv roller-custom.properties $ROLLER_DIR/WEB-INF/classes/

    Make sure that the following Descriptor is placed in this directory:

    ls $ROLLER_DIR/WEB-INF/sun-web.xml
STEP 3.4: Deploy Roller

Deployment must be easy and straightforward too from the Admin GUI, or You can place the $ROLLER_DIR in the autodeploy directory if you want just to try it out.

STEP 4: A Problem To Be Avoid

I only got Roller and GlassFishV3 working together by disabling the following JPA configuration and setting its flag to false and then adding it to “roller-custom.properties“:
openjpa.QueryCompilationCache=false

Enjoy blogging ;)

How-To Fix libstdc++5 Dependency Problem in Ubuntu 9.10

December 1, 2009 68 comments

Upon upgrading to Ubuntu 9.10 I noticed that some applications won’t run any more and the problem was apparently related to the dependency library libstdc++5. This library was deprecated and libstdc++6 was used instead. It appeared that the removal of this library wasn’t wise, and it was reported as a bug which can be found here. You might see an Error Message like this when try to run an application depends on the missing library:

Error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory

To me, the packages that were affected are:

  • Thunderbird (downloaded from Mozilla website)
  • GWT (Google Web Toolkit) in the Hosted Browser mode

A workaround of this bug has been put in place. Mine is almost similar:
Since libstdc++5 was discontinued in Ubuntu 9.10 (Karmic Koala) then we need to download the Ubuntu 9.04 (Jaunty Jackalope) package.

Note: You will need the i386 package if you use Ubunut_i386, and you will need both i386 & amd64 packages if you use the Ubuntu_amd64 as there are i386 applications run under the amd64 architecture!

For Ubuntu 9.10 i386

Download the i386 Jaunty libstdc++5 package.
and simply install it by double click on it, or through the command line you can run this:

sudo dpkg -i libstdc++5_3.3.6-17ubuntu1_i386.deb

For Ubuntu 9.10 amd64

As I said before we need to download both the i386 & amd64 packages:

The amd64 package:

as simple as we did for Ubuntu_i386.
Download the amd64 Jaunty libstdc++5 package.
and simply install it by double click on it, or through the command line you can run this:

sudo dpkg -i libstdc++5_3.3.6-17ubuntu1_amd64.deb

The i386 package:

Download the i386 Jaunty libstdc++5 package.
Here, we need to extract the libstdc++5 library ourself as this deb package is an i386 one. So, if you try to double click on it or install from the command line it will give you an error message “Wrong architecture ‘i386′”
The way to solve this is to extract the libraries yourself and place them in the correct directory. Starting from the director where the package has been downloaded to, run the following:

sudo dpkg-deb -x libstdc++5_3.3.6-17ubuntu1_i386.deb ./tmp
sudo cp ./tmp/usr/lib/* /usr/lib32/

Up to here, this must solve your problem with the libstdc++5. Stick with it till Ubuntu community find a solution for this bug.
Good luck!

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