Configuring Tomcat for CGI Perl

Configuring CGI  Perl in Apache Tomcat :

Software Requirement:

• Apache Tomcat 7.0.11 or above
• JDK 1.6 or above 
• Perl 5 or above

1. Download Tomcat. Install or unzip it to some directory.
2. Modify <TOMCAT_HOME>/conf/web.xml to uncomment the cgi servlet and its mapping

       uncomment:

 

<servlet>

 <servlet-name>cgi</servlet-name>

 <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class>

 <init-param>

 <param-name>debug</param-name>

 <param-value>0</param-value>

 </init-param>

 <init-param>

 <param-name>cgiPathPrefix</param-name>

 <param-value>WEB-INF/cgi</param-value>

 </init-param>

 <init-param>

 

add the following:

<init-param>

 <param-name>passShellEnvironment</param-name>

 <param-value>true</param-value>

 </init-param>

 

now the CGI blocks look like:

 

 

<servlet>

 <servlet-name>cgi</servlet-name>

 <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class>

 <init-param>

 <param-name>debug</param-name>

 <param-value>0</param-value>

 </init-param>

 <init-param>

 <param-name>cgiPathPrefix</param-name>

 <param-value>WEB-INF/cgi</param-value>

 </init-param>

 <init-param>

 <param-name>passShellEnvironment</param-name>

 <param-value>true</param-value>

 </init-param>

 <load-on-startup>5</load-on-startup>

</servlet>

 

3: Modify the servlet-mapping 

 

<servlet-mapping>

 <servlet-name>cgi</servlet-name>

 <url-pattern>/cgi-bin/*</url-pattern>

</servlet-mapping>

 

 

4:Modify <TOMCAT_HOME>\conf\context.xml to add a property on <Context>: 

 

<Context privileged="true">

...

</Context>

 

5.Create a cgi folder under <TOMCAT_HOME>/webapps/ROOT/WEB-INF/

 

mkdir <TOMCAT_HOME>/webapps/ROOT/WEB-INF/cgi

 

6. Create the CGI or Pl file under the same directory 

 

 <TOMCAT_HOME>/webapps/ROOT/WEB-INF/cgi/test.cgi

 

#!C:\Perl\bin\perl.exe

# filename: test1.cgi

print "Content-type: text/html\n\n";

print "Hello, world!\n"

 

7. Restart the Apache server

 

8: Open the link:http://localhost:8080/cgi-bin/test.cgi

 

  

 

 

 

 

 

 

Installing Cpan Module or installin perl Pakage

How to install perl pakage

There are many methods to install perl module or pakage to use in your program:

1. Using CPAN

Install cpan if not installed
to install a module say "Spreadsheet::Read" run the following command:

sudo cpan install module
Example:
sudo cpan install Spreadsheet::Read


2. With the help of the tar or zip file of the package 
follow the following steps:

download the tar of the package required from cpan directory
example for Spreadsheet::Read
go to cpan.org and search the module required.
write click on the tar of the module on the right side of the page and select coppy link location.
come to the terminal and run

1.wget http://search.cpan.org/CPAN/authors/id/H/HM/HMBRAND/Spreadsheet-Read-0.54.tgz
         this will download the package to the current location
extract the package
2.tar -xvzf pakagename
    tar -xvzf Spreadsheet-Read-0.54.tgz
3.cd Spreadsheet-Read-0.54
 on reaching inside the folder extracted run the following command
4.sudo perl Makefile.pl
5.make
6.sudo make install
and following these major steps you can easily install any pakage required.

Install Apache2 webserver with PERL,Php Support in Ubuntu Server(verified and tested)

Install Apache2 in Ubuntu

sudo aptitude install apache2

This will complete the installation.

After installation
Type the server’s IP address (or alias if you added the server to your /etc/hosts file) in your browser’s address bar or, if you are browsing on the server itself, type 127.0.0.1 or localhost. If an error occurs, then you will have to edit the apache2.conf file to ensure that Apache can fully resolve the server’s name.If you have any problem then you have to edit the apache2 configuration file using the following command

sudo nano /etc/apache2/apache2.conf
Add the following line somewhere
ServerName localhost
or
ServerName yourserverip
Save and exit the file

Restart Apache server using the following command.
sudo apache2ctl restart

Change default document root in Apache2
The main configuration file located at /etc/apache2/apche2.conf.If you want to change the default document root you need to edit the /etc/apache2/sites-available/default file and look for this line “DocumentRoot /var/www/” here you can change where ever you want to change.For example if you want to change /home/www the above line looks like this “DocumentRoot /home/www/”.
Save and exit the file

Restart Apache server using the following command.
sudo apache2ctl restart




Enable CGI and perl support for apache2 server
You need to install the following package

sudo aptitude install libapache2-mod-perl2

Configure a cgi-bin directory
You need to create a cgi-bin directory using the following command
sudo mkdir /home/www/cgi-bin
Configuring Apache to allow CGI program execution is pretty easy. Create a directory to be used for CGI programs and add the following to the site configuration file (again between the <VirtualHost> tags).

ScriptAlias /cgi-bin/ /home/www/cgi-bin/
<Directory /home/www/cgi-bin/>
Options ExecCGI
 AddHandler cgi-script cgi pl

       AddHandler default-handler .jpg .png .gif .js .txt .bat .css .html .htm

</Directory>

The first line creates an alias that points to the directory in which CGI scripts are stored. The final line tells Apache that only files that end with the *.cgi and *.pl extensions should be considered CGI programs and executed.

**AddHandler default-handler .jpg .png .gif .js .txt .bat .css .html .htm
this tells cgi to exclude some of the non perl related files like "CSS,txt,html etc"

Test your Perl Program
cd /home/www/cgi-bin
sudo nano perltest.pl
Copy and paste the following section save and exit the file.

###Start###
#!/usr/bin/perl -w
print "Content-type: text/html\r\n\r\n";
print "Hello there!<br />\nJust testing .<br />\n";

Change permissions on it

sudo chmod a+x perltest.pl
Open your web browser open
http://yourserverip/cgi-bin/perltest.pl.It should be working.








Enable PHP support for apache2 webserver
If you want to enable php5 or php4 support to your apache webserver use the following commands to install require packages
For PHP5

sudo aptitiude install php5 libapache2-mod-php5

For PHP4

sudo aptitiude install php4 libapache2-mod-php4

You also make sure the php5 and php4 modules are enabled using the following commands
sudo a2enmod php5
sudo a2enmod php4
After installing php support you need to restart apache webserver using the following command
sudo apache2ctl restart
Test your PHP Support foe apache webserver
To check the status of your PHP installation
sudo nano /var/www/testphp.php
and insert the following line

<?php phpinfo(); ?>

Save and exit the file
Now open web browser at http://yourserveripaddress/testphp.php and check.




Removing Apache2:

 cmd:

apt-get remove apache2

 

Setting Up GIT (git configuration on loca PC with the server)

Some Simple steps for GIT cloning and installation:

• sudo apt-get install git
• make a saparate folder for code
• cd into that
• git config --global user.name "XYZ" //user name of GIT account
• git config --global user.email "XYZ@gmail.com" //mail  which is registered with  GIT account
• NOTE:: each user have a unique user/mailid ., other wise git conflict will be there while git activities.
• git clone gitaccountwebpage.com/git/repository_name/   //clone to repository of git directory.
• once it done go to newly created directory synced with the server  (into your craeted directory).

GIt cloning Done


check basic commands like pull push add....

learn basics of GIT (http://rogerdudler.github.io/git-guide/)

How to install MySQL on Ubuntu

Follow the following steps:

sudo apt-get update
sudo apt-get dist-upgrade

Install the MySQL server and client packages:

sudo apt-get install mysql-server mysql-client
When done, you have a MySQL database read to rock 'n roll. However, there's more to do.
You need to set a root password, for starters. MySQL has it's own user accounts, which are not related to the user accounts on your Linux machine. By default, the root account of the MySQL Server is empty. You need to set it. Please replace 'mypassword' with your actual password and myhostname with your actual hostname.
sudo mysqladmin -u root -h localhost password 'mypassword' sudo mysqladmin -u root -h myhostname password 'mypassword' 

You can now access your MySQL server like this:

mysql -u root -p