This guide provides instructions for installing JOnAS from scratch on Unix-compatible systems.
The content is organized into the following steps
Download the binary version of JDK 1.3 or JDK 1.4 from the java Sun web site into the appropriate directory. Launch the executable file:
./j2sdk-1_<version number>-<system>.bin for Unix
./j2sdk-1_<version number>-<system>.sh for Linux 
 j2sdk-1_<version number>-windows-i586.exe for Windows
Set the JAVA_HOME environment variable and update the path:
export JAVA_HOME=<Installation Directory> 
PATH=$JAVA_HOME/bin:$PATH (on Windows: PATH=%JAVA_HOME%/bin;%PATH%)
Download the binary version of Ant 1.5 from the Ant Apache web site. Untar or Unzip it into the appropriate directory:
tar -jxvf jakarta-ant-1.5-bin.tar.bz2
(or unzip jakarta-ant-1.5-bin.zip)
Set the ANT_HOME environment variable and update the path:
export ANT_HOME=<Installation Directory> 
PATH=$PATH;$ANT_HOME/bin (on Windows: PATH=%ANT_HOME%/bin;%PATH%)
Download bcel-5.0.zip from the Jakarta
web site and install bcel.jar in the directory
$ANT_HOME/lib.
Download the binary version of Tomcat 4.1.x from the Jakarta Tomcat web site. Untar it into the appropriate directory:
tar -xvf jakarta-tomcat-4.1.x.tar.gz
Set the CATALINA_HOME environment variable:
export CATALINA_HOME=<Installation Directory>
JONAS_BASE directory can be used as CATALINA_BASE: export
CATALINA_BASE=$JONAS_BASE 
Configuration information for the Realm and users is provided at the Setup process.
Download the binary version of JOnAS from the ObjectWeb web
site. 
Choose a location for the JOnAS installation. 
Be aware that if you have already installed a previous version of JOnAS in
this location, the new installation will overwrite existing files, thus
customized configuration files may be lost. Therefore, it is prudent to save
these files before starting the installation process. 
The installation process consists of untaring the downloaded file. 
Change to the directory in which JOnAS is to be installed and untar this
file, using 
the tar -zxvf jonas.tgz command. 
After installing the JOnAS product, set the following environment
variable:
export JONAS_ROOT = <Installation Directory> 
PATH = $JONAS_ROOT/bin/unix:$PATH
Do an ant install in the JONAS_ROOT directory to
unpack the jar files necessary to build jonas.jar and
client.jar.
Before using JOnAS, the following setup activities must be completed:
<data
    source>.properties (templates are located in the directory
    $JONAS_ROOT/conf). Then, add the data source file name
    (without the extension .properties) to the
    jonas.properties file:    jonas.service.dbm.datasource    
    <data source> $JONAS_ROOT/bin/unix/config_env, set the path to
    the JDBC driver of the database being used.    CLASSPATH=/usr/lib/pgsql/jdbc7.0-1.2.jar:$CLASSPATHexport
    CATALINA_BASE=$JONAS_BASE so it will use the JOnAS realms.$JONAS_ROOT/conf:
    MailSession1.properties and
    MailMimePartDS1.properties. Then, in the
    jonas.properties file, define the
    jonas.service.mail.factories property:    jonas.service.mail.factories    
    MailSession1,MailMimePartDS1Compile the examples as follows: 
ant install in the directory
$JONAS_ROOT/examples
JOnAS installation is now complete. For more information, refer to the JOnAS Documentation.