The first part of the book UNIX and C programming is hands-on Theoretical as well as Practical guide may be used as master UNIX and C. This book begins by discussing the history and culture of UNIX and beginning to use a UNIX System and UNIX System administration. The book also focuses on the advanced C concepts and Introduction of Socket Programming. The book provides multiple numbers of simple examples, commands and output. The book covers entire syllabus of the subject for B.Tech. and MCA of U.P. Technical University.