A young student, Linus Torvalds, created Linux operating system at the University of Helsinki in Finland. He had a keen interest in Minix, a small Unix system and hence started developing it in'91. It was in'94 that he released version 1.0 of the Linux Kernel. This is the basis on which the Linux operating system has been developed. Hundreds of companies and individuals have used this Kernel to release their own versions of operating systems. The current version is 2.6, developed in December 2003 and the quest for improvisation continues.
It has been amply proved that Linux is the main alternative to Unix and Microsoft operating systems because of its functionality, adaptability and robustness. Several home-based and Office desk tops have shifted to Linux and this number is increasing in leaps and bounds. Linux-embedded microchips are widely used in appliances and devices and this is also on the increase. Under these circumstances, candidates are changing tack and opting for Linux Certification Programs due to the huge career potential available on that platform.
It is the Beginner's course that has to be opted by inexperienced candidates and for those who have enough exposure in Linux, you have an intermediate level course. This intermediate level course is useful for learning Linux system administration also.
Likewise, Linux Professional Institute Certification has two levels of Certification, one for beginners, called Junior Level Administration (LPIC1) and a higher level course called Intermediate Level Administration (LPIC2) for experienced Linux candidates.
Red Hat has commendably captured a big slice in the Linux Certifications market due to the fact that they have devised excellent Linux IT certifications on their own. Their certification programs are so popular that one of their certification program, RHCE (Red Hat Certified Engineer) is gloriously called the crown jewel of all Linux certifications and even independent surveys vouch the fact that it is ranked number one in all the IT certification programs.
RHCT (Red Hat Certified Technician) Program is popularly called the transition course for non-Linux candidates when they wish to shift to Linux platform. Surveys reveal that it is the fastest growing credential in Linux. The fact that Examinations for RHCE and RHCT are conducted on live-test systems for simulating real-life tasks renders more credibility and value to these two Programs.