This book is released with essentials to work on Linux Environment by covering all the fundamental concepts of the Linux Programming. These topics also give an impact on the users to learn to carry out the projects in a Linux Environment. This book gives an exposure to run the Linux programs and to develop the applications in Linux. This book also provides sample programs to understand the concepts of the Linux Programming in detail. It also consists of exercises to the students to enrich their knowledge in a proactive learning process. This book covers the concepts, in the curriculum of various universities in India and abroad. It can also be used by the naive professionals to develop their applications in a Linux Environment. At last, this book helps the students to learn the basic concepts related to Linux Programming and develop various applications. The book is aimed to elucidate the basic concepts of Linux Programming.