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To see first few lines of a huge file which commands can be used
head
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1 Linux Introduction
2 Linux is closer to?
3 Linux Operating System
4 Linux Files & Processes
5 Number of processes
6 File Name on restarting
7 Process on Computer Restart
8 Process id
9 The Directory Structure
10 Relative File Names
11 Create Directory
12 Create Directory - nested
13 Delete a file
14 Create File
15 Create Text File Using Nano
16 Copy File
17 Copy a file into another directory
18 Copy a directory into another directory
19 Move Files & Directories
20 Move a file to folder
21 Delete Files & Directories
22 Remove a directory
23 Seeing Inside File - cat, tail, head
24 Commands
25 Commands to print text of a file
26 Commands to print first few lines
27 Use find command
28 Use find command to find files with .txt extension
29 Use grep command
30 Which line did you get in the result?
31 Use wc command
32 Check number of characters in a file
33 Permissions - Overview
34 Permissions: Assignment - Check owner and group of a file
35 Permissions - Using chmod To Change
36 Permissions: Assignment - Owner can change, others can only read
37 Permission: Assignment - Everyone can execute
38 Permission: Assignment - Nobody other than owner can read the file
39 Permission: Assignment - Only Group Members can read
40 Permissions - Numeric
41 Permissions: Numeric representation
42 Permissions - Advanced
43 Who can delete a file
44 Process
45 Which one is a process?
46 Find information about processes
47 Check ps command
48 Check all processes
49 Which command to use to monitor process?
50 Background Processes
51 Send a process in background
52 Kill a background process
53 Interacting with processes
54 More - Interacting with processes
55 Process hierarchy
56 Command to kill a process
57 Writing first shell script
58 Every Program Returns a Value
59 Value of echo $
60 Networking: Sockets and ports
61 Connecting to localhost
62 Files & Directories: linking
63 Files & Directories - Symbolic links
64 Files & Directories - More About Symbolic Link
65 Readlink Command
66 Hard Link to a Directory
67 Chaining Unix Commands
68 Redirecting the output of a program
69 Pipes - Introduction
70 Filters
71 Word Count Exercise
72 Improved Word Count Using Unix Commands
73 Shell script for WordCount
74 Permissions of Processes
75 Read or Modify /etc/shadow
76 Permissions of Processes - setuid
77 Permissions - setting setuid
78 permissions of passwd file
79 Special System commands
80 Command to reboot the machine
81 Where is my program?
82 What is Hadoop command
83 Environment variables
84 Find value of an environment variable
85 Setting Environment variables
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