This article has been written for kernel newcomers interested in learning about network device drivers. It assumes that reader has a significant exposure to C and the Linux environment.
This article is based on a network driver for the RealTek 8139 network card. I chose the RealTek chip for two reasons: First, RealTek provides technical specifications for its chips free of cost. (Thanks, RealTek!) Second; it's quite cheap. It is possible to get the chip under Rs 300 (approximately US$7) in Indian markets.
The driver presented in this article is minimal; it simply sends and receives packets and maintains some statistics. For a full-fledged and professional-grade driver, please refer to the Linux source.
The the JDBC thin driver provides the only way to access Oracle from the Web (applets). It is smaller and faster than the OCI drivers, and doesn't require a pre-installed version of the JDBC drivers.
Display employee in HTML format using HTP package
In around 15 minutes, the time it takes to install Ubuntu Server Edition, you can have a LAMP (Linux, Apache, MySQL and PHP) server up and ready to go. This feature, exclusive to Ubuntu Server Edition, is available at the time of installation.
How to create triggers for auditing tables in Oracle
create or replace trigger emp_audit_trg
after insert or update or delete on emp
for each row
audit_pkg.audit( 'EMP', 'EMPNO', :old.empno, :new.empno );
audit_pkg.audit( 'EMP', 'ENAME', :old.ename, :new.ename );
audit_pkg.audit( 'EMP', 'DEPTNO', :old.deptno, :new.deptno );
audit_pkg.audit( 'EMP', 'SAL', :old.sal, :new.sal );
audit_pkg.audit( 'EMP', 'HIREDATE', :old.hiredate, :new.hiredate );
One of the new features in Ubuntu 8.10 is the ability to create an encrypted directory for content you do not want others to access. Oh, by the way, did you know that anyone can read your files that are in your home directory? Here is an example of sue logged in and able to open files in mike's home directory. However, note that they are opened read-only so they cannot be changed. Still, who is looking at your stuff?
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