Cover -- Preface -- Contents -- Chapter 1: Introduction and Overview-Getting Started -- 1.1 Definition of Operating System and the Services Offered by IT -- 1.2 Types of Operating System -- 1.3 History of UNIX and LINUX Along with Their Features -- 1.3.1 Unix -- 1.3.2 Linux -- 1.3.3 Comparison of Unix and Linux -- 1.4 File System Architecture Details -- 1.5 Types of Users and Files in UNIX/LINUX -- 1.6 Basic UNIX Commands -- 1.7 Quiz -- Answers -- Chapter 2: Linux/Unix Commands-An In-depth Analysis -- 2.1 What is Shell ? -- 2.2 LINUX / UNIX Commands -- 2.2.1 Directory Related Commands -- 2.2.2 The List Command (and Its Variants) -- 2.2.3 The Man Command -- 2.2.4 pwd -- 2.2.5 Creation of a Directory (mkdir) -- 2.2.6 Removal of a Directory (rmdir) -- 2.2.7 Renaming Directory (mv) -- 2.2.8 Change Directory (cd) -- 2.3 File Related Commands -- 2.3.1 cat (no Mouse is Required in Linux) -- 2.3.2 cat for Appending into the File Already Available and Combining 2 Files -- 2.3.3 cat for Appending into the File Already Available and Combining 2 Files -- 2.3.4 cat for File Copy Operation -- 2.3.5 Usage of Head and Tail for File Operations -- 2.3.6 File Copy and Renaming (mv) Operations -- 2.3.7 File Removal Operation -- 2.4 Other Linux Commands -- 2.4.1 date -- 2.4.2 whoami -- 2.4.3 who -- 2.4.4 calendar (cal) -- 2.4.5 uname (to Check Version of Linux) -- 2.4.6 wc (Word Count Utility) -- 2.4.7 whatis (what is this?) -- 2.4.8 bc (Basic Calculator) -- 2.4.9 diff (File Compare Operation) -- 2.4.10 ifconfig -- 2.4.11 finger -- 2.4.12 System Shut Down and Restart Commands -- 2.5 Quiz -- Answers -- Chapter 3: Files and Permissions, Filters and Wildcards -- 3.1 Files and Permissions-An Analysis -- 3.1.1 chmod Command -- 3.2 Wildcard Symbols -- 3.2.1 * wildcard -- 3.2.2 ? wildcard -- 3.2.3 [ ] wildcard -- 3.3 Redirection Operators -- 3.3.1 Input Redirection.

3.3.2 Output Redirection -- 3.3.3 Error Redirection -- 3.4 Filter - GREP (Global Regular Expression Printer) -- 3.5 Pipe (How to Use Two Commands in One Shot!) -- 3.6 Quiz -- Answers -- Chapter 4: Editors in Linux/Unix -- 4.1 Introduction -- 4.1.1 What Does VI Mean? -- 4.2 Modes in VI Editor -- 4.2.1 The Command Mode -- 4.2.2 The Insert Mode -- 4.2.2.1 How to get into this Mode? -- 4.2.3 The Last Line Mode -- 4.3 Commands -- 4.3.1 Entering && Exiting vi -- 4.3.2 Movement Commands -- 4.3.2.1 Adding/Inserting Text -- 4.3.2.2 Modifying Text -- 4.3.2.3 Deleting Text -- 4.3.3 Cut and Paste -- 4.3.4 Pattern Searching -- 4.4 VI Programming -- 4.5 Nedit - An Introduction -- 4.5.1 Opening a New File with Nedit -- 4.6 Quiz -- Answers -- Chapter 5: Shell Programming-An Introduction -- 5.1 Introduction -- 5.2 Syntaxes and Variables Used in Shell Scripting -- 5.3 Arithmetical Operations -- 5.4 Conditional Statements Used in Shell -- 5.5 Something to Note! -- 5.6 Special Symbols Used in Shell -- 5.7 Quiz: (Instead of Quiz, in this Chapter the Reader is Presented with Few Scripting Exercises) -- Answers for Exercise Question -- Chapter 6: Linux/Unix System Programming (with Code and Implementation) -- 6.1 Introduction - Getting Started with C Programming in Linux -- 6.1.1 Make File - Why is it Needed? -- 6.2 /Proc and File Descriptor Table -- 6.2.1 Execution Procedure -- 6.3 Basic System Calls -- 6.3.1 Creat System Call: (Creat and not Create) -- 6.3.2 Open ( ) System Call -- 6.3.3 Write ( ) System Call -- 6.3.4 Read ( ) System Call -- 6.3.5 Close System Call ( ) -- 6.3.6 Unlink System Call ( ) -- 6.3.7 Getpid () and Getppid System Calls ( ) -- 6.3.8 Dup and dup2 System Calls ( ) -- 6.3.9 fork ( ) System Call -- 6.3.9.1 Orphan Process -- 6.3.9.2 Zombie (defunct) Process -- 6.3.10 "system" System Call -- 6.3.11 fcntl System Call.

6.3.11.1 fcntl for Finding File Access Permissions -- 6.3.11.2 fcntl with DUP Option -- 6.3.12 Execlp System Call -- 6.3.13 Stat System Call -- 6.4 Signals -- 6.4.1 Usage of SIG_IGN (Ignore) -- 6.4.2 Usage of SIG _IGN for Unstoppable Signals -- 6.4.3 Signal Handler Usage -- 6.5 Inter Process Communication Methodologies (IPC) -- 6.5.1 Pipe -- 6.5.2 Named Pipe -- 6.5.3 Message Queue -- 6.5.4 Shared Memory -- 6.6 Task and Resource Synchronization -- 6.6.1 Semaphores -- 6.6.1.1 Where the Semaphore is Stored? -- 6.6.2 Semaphore Types -- 6.6.2.1 Where the Semaphore is Used in the Programming Context? -- 6.6.2.2 Creating a Simple Semaphore in Unix -- 6.6.2.3 Busy Waiting in Semaphores -- 6.6.2.4 Deadlock and Starvation in Semaphores -- 6.7 Mutex (Mutual Exclusion) -- 6.8 Remote Procedure Call (RPC) -- 6.8.1 Need for RPC -- 6.8.2 RPC Mechanism-How RPC Works? -- 6.8.3 Where RPC can be Used? -- 6.8.4 Memory Management in RPC -- 6.9 Sockets -- 6.9.1 How Sockets are Used in a Client-Server Architecture? -- 6.10 Quiz -- Answers -- Index.