Unix and Shell Programming-Chapter - 5 INTRODUCTION TO SHELL - PART- 5

INTRODUCTION TO SHELLS: Unix Session - Login Shell Verification, Current Shell Verification, Shell Relations; Standard Streams; Redirection - Input, Output, Errors; Pipes; Tee Command; Command Execution - Sequence commands, Grouped Commands, Chained Commands, Conditional Commands; Command Line Editing - concept, Editor Selection, Vi Editor; Quotes - Back slash, Double Quotes, Single Quotes; Command Substitution; Job Control - foreground and background jobs, job commands, process ID; Aliases; Variables - User defined, Predefined, Storing data in variables, Accessing a variable; Predefined Variables; Options; Shell/Environment customization.