1 Linux Introduction

2 Linux is closer to?

3 Getting started with Linux Console

4 Linux Operating System

5 Linux Files & Processes

6 Number of processes

7 File Name on restarting

8 Process on Computer Restart

9 Process id

10 The Directory Structure

11 Relative File Names

12 Create Directory

13 Create Directory - nested

14 Delete a file

15 Create File

16 Create Text File Using Nano

17 Copy File

18 Copy a file into another directory

19 Copy a directory into another directory

20 Move Files & Directories

21 Move a file to folder

22 Delete Files & Directories

23 Remove a directory

24 Seeing Inside File - cat, tail, head

25 Commands

26 Commands to print text of a file

27 Commands to print first few lines

28 Use find command

29 Use find command to find files with .txt extension

30 Use grep command

31 Which line did you get in the result?

32 Use wc command

33 Check number of characters in a file

34 Permissions - Overview

35 Permissions: Assignment - Check owner and group of a file

36 Permissions - Using chmod To Change

37 Permissions: Assignment - Owner can change, others can only read

38 Permission: Assignment - Everyone can execute

39 Permission: Assignment - Nobody other than owner can read the file

40 Permission: Assignment - Only Group Members can read

41 Permissions - Numeric

42 Permissions: Numeric representation

43 Permissions - Advanced

44 Who can delete a file

45 Process

46 Which one is a process?

47 Find information about processes

48 Check ps command

49 Check all processes

50 Which command to use to monitor process?

51 Background Processes

52 Send a process in background

53 Kill a background process

54 Interacting with processes

55 More - Interacting with processes

56 Process hierarchy

57 Command to kill a process

58 Writing first shell script

59 Program returns value and arguments

60 Value of echo $

61 Networking: Sockets and ports

62 Connecting to localhost

63 Files & Directories: linking

64 Files & Directories - Hard Links and Softlink

65 Files & Directories - Symbolic links

66 Files & Directories - More About Symbolic Link

67 Readlink Command

68 Hard Link to a Directory

69 Chaining Unix Commands

70 Redirecting the output of a program

71 Pipes - Introduction

72 Filters

73 Word Count Exercise

74 Improved Word Count Using Unix Commands

75 Shell script for WordCount

76 Permissions of Processes

77 Read or Modify /etc/shadow

78 Permissions of Processes - setuid

79 Permissions - setting setuid

80 permissions of passwd file

81 Special System commands

82 Command to restart the machine

83 Where is my program?

84 What is Hadoop command

85 Environment variables

86 Find value of an environment variable

87 Setting Environment variables