Bash settings (newer default). To change to the bash shell permanently execute the chsh command.

export INFORMIXSERVER=onlinix
export INFORMIXDIR=/local/apps/informix
export INFORMIXSQLHOSTS=/local/apps/informix/etc/sqlhosts.cs
export ONCONFIG=onconfig.cs
export PATH=${PATH}:$INFORMIXDIR/bin
export CLASSPATH=/local/apps/Java/InformixJDBC-2.1/lib/ifxjdbc.jar:.
export CLASSPATH=${CLASSPATH}:/local/apps/Java/jdk-1.2
export CLASSPATH=${CLASSPATH}:/local/apps/Java/jsdk-2.1/server.jar
export CLASSPATH=${CLASSPATH}:/local/apps/Java/jsdk-2.1/servlet.jar
export JAVA_HOME=/local/apps/java
export PATH=/local/apps/Java/j2sdk-1.4.0/bin:$PATH