Difference between revisions of "BOSS-Linux/C2/Simple-filters/English-timed"

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|'''Narration'''
 
|'''Narration'''
 
|-
 
|-
−
| 00:00
+
| 00:02
 
| Hello and welcome to the Spoken Tutorial on Simple Filters with Linux.  
 
| Hello and welcome to the Spoken Tutorial on Simple Filters with Linux.  
 
|-
 
|-
−
|00:08
+
|00:09
 
| Here we will be learning about '''head, Tail, sort, cut''' and '''paste.'''
 
| Here we will be learning about '''head, Tail, sort, cut''' and '''paste.'''
 
|-
 
|-
−
| 00:17
+
| 00:18
 
| All these are command line text manipulation tools.  
 
| All these are command line text manipulation tools.  
 
|-
 
|-
Line 22: Line 22:
 
|-
 
|-
 
| 00:46
 
| 00:46
−
| I am using Ubuntu 10.10 for this tutorial.  
+
| I am using Linux for this tutorial.  
 
|-
 
|-
 
|00:51
 
|00:51
Line 28: Line 28:
 
|-
 
|-
 
|01:02
 
|01:02
−
| We use the Head command followed by an '''ascii''' file name, to display the first 10 lines of a file by default.  
+
| We use the '''Head''' command followed by an '''ascii''' file name, to display the first 10 lines of a file by default.  
 
|-
 
|-
 
| 01:10
 
| 01:10
−
| Let us create a file. I am hitting on '''ESC''' (escape) key to show this practically.  
+
| Let us create a file.  
 
|-
 
|-
−
| 01:17
+
| 01:13
 
|Go to '''Applications > Accessories > Text Editor.'''  
 
|Go to '''Applications > Accessories > Text Editor.'''  
 
|-
 
|-
−
| 01:24
+
| 01:20
 
|I already have these numbers in another file for the sake of time constrain .  
 
|I already have these numbers in another file for the sake of time constrain .  
 
|-
 
|-
−
| 01:30
+
| 01:26
 
|Let me copy and paste.
 
|Let me copy and paste.
 
|-
 
|-
−
| 01:38
+
| 01:34
 
| Hit on '''File''' , '''Save.'''  
 
| Hit on '''File''' , '''Save.'''  
 
|-
 
|-
−
| 01:41
+
| 01:37
 
|Name the file as '''numbers dot txt''' and hit on '''save'''  
 
|Name the file as '''numbers dot txt''' and hit on '''save'''  
 
|-
 
|-
−
| 01:48
+
| 01:44
 
|Close this file.
 
|Close this file.
 
|-
 
|-
−
| 01:53
+
| 01:50
 
| Now go to '''Applications > Accessories > Terminal.'''  
 
| Now go to '''Applications > Accessories > Terminal.'''  
 
|-
 
|-
−
| 02:01
+
| 01:58
 
| Let us try to see if we can see the file we created.  
 
| Let us try to see if we can see the file we created.  
 
|-
 
|-
−
| 02:05
+
| 02:02
 
|Type '''ls''' and hit on '''enter.'''  
 
|Type '''ls''' and hit on '''enter.'''  
 
|-
 
|-
−
| 02:09
+
| 02:05
 
|What we did here is to list all the folders and files on our '''home''' directory.  
 
|What we did here is to list all the folders and files on our '''home''' directory.  
 
|-
 
|-
−
| 02:15
+
| 02:11
−
| Now we can use the cat command to read the contents of the file we created.  
+
| Now we can use the '''cat''' command to read the contents of the file we created.  
 
|-
 
|-
−
| 02:21
+
| 02:18
 
| '''Cat n-u-m''' Hit on '''tab''' to autofill the file name. Hit on '''Enter.'''
 
| '''Cat n-u-m''' Hit on '''tab''' to autofill the file name. Hit on '''Enter.'''
 
|-
 
|-
−
| 02:29
+
| 02:26
−
| Let us do the same with head command.  
+
| Let us do the same with ''' head''' command.  
 
|-
 
|-
−
| 02:33
+
| 02:30
 
| '''head numbers dot txt''', '''enter'''
 
| '''head numbers dot txt''', '''enter'''
 
|-
 
|-
−
| 02:39
+
| 02:36
 
| Now the first 10 lines are displayed.
 
| Now the first 10 lines are displayed.
 
|-
 
|-
−
| 02:43
+
| 02:39
 
| If we want to see the first 5 lines, use the option ''' hyphen n5''' in between the '''head''' command and the file.  
 
| If we want to see the first 5 lines, use the option ''' hyphen n5''' in between the '''head''' command and the file.  
 
|-
 
|-
−
| 02:52
+
| 02:49
 
| Hit on Up arrow,  '''hyphen n5''' and '''Enter.'''
 
| Hit on Up arrow,  '''hyphen n5''' and '''Enter.'''
 
|-
 
|-
−
| 02:58
+
| 02:55
 
| Now the first 5 lines alone are displayed.  
 
| Now the first 5 lines alone are displayed.  
 
|-
 
|-
−
| 03:02
+
| 02:59
 
|Let us switch back to the presentation  
 
|Let us switch back to the presentation  
 +
 
|-
 
|-
−
| 03:08
+
| 03:04
−
|'''F5'''
+
−
|-
+
−
| 03:14
+
 
| The '''tail''' command works exactly opposite to the '''head''' command, it displays the last 10 lines of a file by default.
 
| The '''tail''' command works exactly opposite to the '''head''' command, it displays the last 10 lines of a file by default.
 
|-
 
|-
−
| 03:22
+
| 03:12
 
| I am hitting on '''ALT''' and '''Tab''' to switch to the terminal.
 
| I am hitting on '''ALT''' and '''Tab''' to switch to the terminal.
 
|-
 
|-
−
| 03:27
+
| 03:17
 
| '''tail numbers dot txt'''  
 
| '''tail numbers dot txt'''  
 
|-
 
|-
−
| 03:31
+
| 03:21
 
| If we want to see just the last 5 lines, use the option '''hyphen n5''' in between the '''tail command''' and the file name.  
 
| If we want to see just the last 5 lines, use the option '''hyphen n5''' in between the '''tail command''' and the file name.  
 
|-
 
|-
−
| 03:40
+
| 03:31
 
| '''hyphen n5''', '''Enter'''  
 
| '''hyphen n5''', '''Enter'''  
 
|-
 
|-
−
| 03:45
+
| 03:36
 
| Switch to slides
 
| Switch to slides
 
|-
 
|-
−
| 03:50
+
| 03:39
 
| A log file contains events which took place in a system.
 
| A log file contains events which took place in a system.
 
|-
 
|-
−
| 03:55
+
| 03:45
 
| '''Auth dot log''' file maintains log's for who logged in & who logged out.
 
| '''Auth dot log''' file maintains log's for who logged in & who logged out.
 
|-
 
|-
−
| 04:01
+
| 03:51
 
| The most useful option of the tail command is to use '''hyphen f''' option to follow the tail of a log file.  
 
| The most useful option of the tail command is to use '''hyphen f''' option to follow the tail of a log file.  
 
|-
 
|-
−
| 04:09
+
| 03:59
−
|If a new line is appended to the log file, the tail command will take that as the last line and display 10 lines by default above it.  
+
|If a new line is appended to the log file, the '''tail''' command will take that as the last line and display 10 lines by default above it.  
 
|-
 
|-
−
| 04:18
+
| 04:09
 
| Go to the terminal
 
| Go to the terminal
 
|-
 
|-
−
| 04:21
+
| 04:11
 
|'''tail hyphen f forward slash var slash log slash auth dot log'''
 
|'''tail hyphen f forward slash var slash log slash auth dot log'''
 
|-
 
|-
−
| 04:31
+
| 04:21
 
| Let me resize this terminal
 
| Let me resize this terminal
 
|-
 
|-
−
| 04:39
+
| 04:28
 
| Let us open another Terminal , '''Application- > Accessories - > Terminal.'''
 
| Let us open another Terminal , '''Application- > Accessories - > Terminal.'''
 
|-
 
|-
−
| 04:46
+
| 04:36
 
| Let me resize this terminal  
 
| Let me resize this terminal  
 
|-
 
|-
−
| 04:52
+
| 04:42
 
|so that I can show you in a single screen how '''tail''' follows the last line in a '''log''' file.  
 
|so that I can show you in a single screen how '''tail''' follows the last line in a '''log''' file.  
 
|-
 
|-
−
| 05:00
+
| 04:50
 
| Try to '''su''' as yourself, hit on '''enter.'''  
 
| Try to '''su''' as yourself, hit on '''enter.'''  
 
|-
 
|-
−
| 05:05
+
| 04:54
 
| Give in some wrong password hit on '''enter.'''
 
| Give in some wrong password hit on '''enter.'''
 
|-
 
|-
−
| 05:08
+
| 04:58
 
| You will see that the terminal on which '''tail''' is running is appended with a new '''log.'''  
 
| You will see that the terminal on which '''tail''' is running is appended with a new '''log.'''  
 
|-
 
|-
−
| 05:15
+
| 05:05
 
|The date & time specifies when the '''authentication failure''' took place.  
 
|The date & time specifies when the '''authentication failure''' took place.  
 
|-
 
|-
−
| 05:23
+
| 05:13
 
| Type '''date''' hit on '''enter''' to verify the system date and time.
 
| Type '''date''' hit on '''enter''' to verify the system date and time.
 
|-
 
|-
−
| 05:32
+
| 05:22
 
| Type '''Exit''' to close this terminal.
 
| Type '''Exit''' to close this terminal.
 
|-
 
|-
−
| 05:36
+
| 05:26
−
| Hit '''CTRL C''' to close the running tail command & maximize the screen.
+
| Hit '''CTRL C''' to close the running '''tail''' command & maximize the screen.
 
|-
 
|-
−
| 05:51
+
| 05:42
 
| We have seen only '''auth dot log''' file in the previous example.
 
| We have seen only '''auth dot log''' file in the previous example.
 
|-
 
|-
−
| 05:57
+
| 05:47
 
|These are the commonly used log files in Linux.  
 
|These are the commonly used log files in Linux.  
 
|-
 
|-
−
| 06:01
+
| 05:51
 
| A linux system administrator will look into these log files for more information to troubleshoot his machine if there is a problem.
 
| A linux system administrator will look into these log files for more information to troubleshoot his machine if there is a problem.
 
|-
 
|-
−
| 06:12
+
| 06:02
 
| '''Sort''' command as the name suggest will sort a file for us in both ascending and descending order.  
 
| '''Sort''' command as the name suggest will sort a file for us in both ascending and descending order.  
 
|-
 
|-
−
| 06:23
+
| 06:13
 
| '''sort numbers dot txt''' .This would sort our '''numbers dot txt''' file in ascending order.  
 
| '''sort numbers dot txt''' .This would sort our '''numbers dot txt''' file in ascending order.  
 
|-
 
|-
−
| 06:31
+
| 06:21
 
| Notice something is strange in there, sort just looks at the first character to sort, so '''10''','''11'''&'''12''' appears before the number 2.  
 
| Notice something is strange in there, sort just looks at the first character to sort, so '''10''','''11'''&'''12''' appears before the number 2.  
 
|-
 
|-
−
| 06:43
+
| 06:33
 
| To avoid this add the option of '''hyphen n''', hyphen n and  Enter
 
| To avoid this add the option of '''hyphen n''', hyphen n and  Enter
 
|-
 
|-
−
| 06:53
+
| 06:43
 
| Now sort looks at the entire number to sort them.  
 
| Now sort looks at the entire number to sort them.  
 
|-
 
|-
−
| 06:58
+
| 06:47
 
| To sort '''number dot txt''' in reverse order add an option of '''hyphen r.'''  
 
| To sort '''number dot txt''' in reverse order add an option of '''hyphen r.'''  
 
|-
 
|-
−
| 07:09
+
| 06:59
 
| We have numbers that repeat in this file, to pull out just the unique numbers add another option of '''hyphen u''' .
 
| We have numbers that repeat in this file, to pull out just the unique numbers add another option of '''hyphen u''' .
 
|-
 
|-
−
| 07:17
+
| 07:07
 
| Go to Terminal.
 
| Go to Terminal.
 
|-
 
|-
−
|07:20
+
|07:09
 
| Up Arrow  
 
| Up Arrow  
 
|-
 
|-
−
| 07:22
+
| 07:11
 
|'''U,  enter''',  
 
|'''U,  enter''',  
 
|-
 
|-
−
| 07:26
+
| 07:15
 
|Previously two 2's were displayed . Now only one 2 is displayed.
 
|Previously two 2's were displayed . Now only one 2 is displayed.
 
|-
 
|-
−
| 07:38
+
| 07:28
 
| Now we will see how we can sort a file based on certain column.  
 
| Now we will see how we can sort a file based on certain column.  
 
|-
 
|-
−
| 07:44
+
| 07:33
 
| Let us create a file and key in these as shown below.  
 
| Let us create a file and key in these as shown below.  
 
|-
 
|-
−
| 07:48
+
| 07:38
 
|Go to '''Applications > Accessories > Text Editor.'''  
 
|Go to '''Applications > Accessories > Text Editor.'''  
 
|-
 
|-
−
| 07:57
+
| 07:46
 
| I already have the data in another file for the sake of time constrain let me copy & Paste the value, '''CTRL+C; CTRL+V.'''  
 
| I already have the data in another file for the sake of time constrain let me copy & Paste the value, '''CTRL+C; CTRL+V.'''  
 
|-
 
|-
−
| 08:11
+
| 08:01
 
| File, Save it as '''marks dot txt''', Hit on '''Save.'''  
 
| File, Save it as '''marks dot txt''', Hit on '''Save.'''  
 
|-
 
|-
−
| 08:21
+
| 08:11
 
| Don't mind the special characters on this file I don't want someone to sue me for giving them low marks  
 
| Don't mind the special characters on this file I don't want someone to sue me for giving them low marks  
 
|-
 
|-
−
| 08:28
+
| 08:18
 
| Close this file.  
 
| Close this file.  
 
|-
 
|-
−
| 08:33
+
| 08:24
 
| Let us sort based on the second column of '''marks dot txt file. '''
 
| Let us sort based on the second column of '''marks dot txt file. '''
 
|-
 
|-
−
| 08:40
+
| 08:30
 
| Go to the terminal.  
 
| Go to the terminal.  
 
|-
 
|-
−
| 08:42
+
| 08:32
 
|'''sort space marks dot txt space hyphen t space open inverted commas space close inverted commas space'''
 
|'''sort space marks dot txt space hyphen t space open inverted commas space close inverted commas space'''
 
|-
 
|-
−
| 08:53
+
| 08:43
 
|here '''hyphen t''' stands for the '''delimiter''' & the space in between the quotes represents it.  
 
|here '''hyphen t''' stands for the '''delimiter''' & the space in between the quotes represents it.  
 
|-
 
|-
−
| 09:02
+
| 08:52
 
|'''hyphen k2''' for the second column on which sort should be performed.
 
|'''hyphen k2''' for the second column on which sort should be performed.
 
|-
 
|-
−
| 09:14
+
| 09:04
 
|Hit on '''Enter.'''  
 
|Hit on '''Enter.'''  
 
|-
 
|-
−
| 09:20
+
| 09:10
 
|'''Cat marks dot txt'''  
 
|'''Cat marks dot txt'''  
 
|-
 
|-
−
| 09:24
+
| 09:14
 
|This is the original file, if you see '''Avir''' is moved above and '''Bala''' came below when we sorted based on the second column alone.  
 
|This is the original file, if you see '''Avir''' is moved above and '''Bala''' came below when we sorted based on the second column alone.  
 
|-
 
|-
−
| 09:43
+
| 09:33
 
|'''Cut''' command is used to cut just certain information from a file.  
 
|'''Cut''' command is used to cut just certain information from a file.  
 
|-
 
|-
−
| 09:51
+
| 09:41
 
|Let us pull out the names from '''marks dot txt'''  
 
|Let us pull out the names from '''marks dot txt'''  
 
|-
 
|-
−
| 09:55
+
| 09:44
 
|Let us go to the terminal '''ALT Tab'''  
 
|Let us go to the terminal '''ALT Tab'''  
 
|-
 
|-
−
| 09:58
+
| 09:48
 
|'''cut space marks dot txt space hyphen d space open inverted commas  space close inverted commas space.'''  
 
|'''cut space marks dot txt space hyphen d space open inverted commas  space close inverted commas space.'''  
 
|-
 
|-
−
|10:08
+
|09:58
−
|here in '''cut''' command '''d''' is the delimiter & the space inbetween the quotes represents the delimiter.
+
|here in '''cut''' command '''d''' is the delimiter & the space in between the quotes represents the delimiter.
 
|-
 
|-
−
|10:20
+
|10:10
 
|'''hyphen f2''' for the second column. Hit on '''enter.'''  
 
|'''hyphen f2''' for the second column. Hit on '''enter.'''  
 
|-
 
|-
−
|10:31
+
|10:21
 
|'''Paste''' command will merge corresponding subsequent lines of the files.  
 
|'''Paste''' command will merge corresponding subsequent lines of the files.  
 
|-
 
|-
−
|10:36
+
|10:26
 
| Let us use both the '''numbers dot txt''' and '''marks dot txt file''' now.  
 
| Let us use both the '''numbers dot txt''' and '''marks dot txt file''' now.  
 
|-
 
|-
−
|10:41
+
|10:31
 
|Go to the terminal.  
 
|Go to the terminal.  
 
|-
 
|-
−
|10:43
+
|10:33
 
|'''Paste numbers dot txt  marks dot txt''', '''enter'''
 
|'''Paste numbers dot txt  marks dot txt''', '''enter'''
 
|-
 
|-
−
|10:50
+
|10:40
−
|Now the first line of '''marks dot txt was appended to the first line of numbers dot txt.  
+
|Now the first line of '''marks dot txt''' was appended to the first line of '''numbers dot txt.'''
 
|-
 
|-
−
|10:57
+
|10:47
 
|We can use the redirect key to redirect this output to some other file called '''concatefile dot txt. '''
 
|We can use the redirect key to redirect this output to some other file called '''concatefile dot txt. '''
 
|-
 
|-
−
| 11:06
+
| 10:56
 
| Go to the terminal.  
 
| Go to the terminal.  
 
|-
 
|-
−
| 11:08
+
| 10:58
 
| Hit on Up arrow. Hit on the redirect key which is the Greater than symbol '''concatfile dot txt'''. Hit on '''Enter.'''  
 
| Hit on Up arrow. Hit on the redirect key which is the Greater than symbol '''concatfile dot txt'''. Hit on '''Enter.'''  
 
|-
 
|-
−
| 11:18
+
| 11:07
 
| '''Cat concatfile dot txt'''  
 
| '''Cat concatfile dot txt'''  
 
|-
 
|-
−
| 11:22
+
| 11:12
 
| Let us go to the slide.  
 
| Let us go to the slide.  
 
|-
 
|-
−
| 11:25
+
| 11:15
 
| If we want paste to print out the numbers serially delimited with tab we can use the '''hyphen s''' option.  
 
| If we want paste to print out the numbers serially delimited with tab we can use the '''hyphen s''' option.  
 
|-
 
|-
−
| 11:34
+
| 11:25
 
| '''Paste  hyphen s'''  
 
| '''Paste  hyphen s'''  
 
|-
 
|-
−
|11:39
+
|11:29
 
|'''numbers dot txt'''  
 
|'''numbers dot txt'''  
 
|-
 
|-
−
| 11:43
+
| 11:33
 
| Go to the slide.  
 
| Go to the slide.  
 
|-
 
|-
−
| 11:45
+
| 11:34
 
| Spoken Tutorial project is a part of Talk to a Teacher project,  
 
| Spoken Tutorial project is a part of Talk to a Teacher project,  
 
|-
 
|-
−
|11:49
+
|11:39
 
|Supported by the National Mission on Education through ICT,MHRD, Government of India.
 
|Supported by the National Mission on Education through ICT,MHRD, Government of India.
 
|-
 
|-
−
| 11:55
+
| 11:45
 
| For more information you can refer to the following link.
 
| For more information you can refer to the following link.
 
|-
 
|-
−
|11:59
+
|11:48
−
|This script has been contributed by ----------------------(name of the translator) and this is -----------------------(name of the recorder) from --------------------------(name of the place)signing off.
+
|This is Bala. Thanks a lot for watching this video and dont forget to leave a comment.
−
 
+
 
|}
 
|}

Revision as of 14:18, 4 December 2014

Time Narration
00:02 Hello and welcome to the Spoken Tutorial on Simple Filters with Linux.
00:09 Here we will be learning about head, Tail, sort, cut and paste.
00:18 All these are command line text manipulation tools.
00:22 If you see a hash (#) symbol on the Terminal you need to become root to execute those commands
00:29 sudo su or su root, if you see a dollar symbol on the Terminal you can be an ordinary user to execute those commands.
00:38 I assume that you did a default installation and did not modify any path where the files are getting saved.
00:46 I am using Linux for this tutorial.
00:51 Prerequisites for this module are the ability to use the mouse , keyboard, maximize and minimize buttons on a window.
01:02 We use the Head command followed by an ascii file name, to display the first 10 lines of a file by default.
01:10 Let us create a file.
01:13 Go to Applications > Accessories > Text Editor.
01:20 I already have these numbers in another file for the sake of time constrain .
01:26 Let me copy and paste.
01:34 Hit on File , Save.
01:37 Name the file as numbers dot txt and hit on save
01:44 Close this file.
01:50 Now go to Applications > Accessories > Terminal.
01:58 Let us try to see if we can see the file we created.
02:02 Type ls and hit on enter.
02:05 What we did here is to list all the folders and files on our home directory.
02:11 Now we can use the cat command to read the contents of the file we created.
02:18 Cat n-u-m Hit on tab to autofill the file name. Hit on Enter.
02:26 Let us do the same with head command.
02:30 head numbers dot txt, enter
02:36 Now the first 10 lines are displayed.
02:39 If we want to see the first 5 lines, use the option hyphen n5 in between the head command and the file.
02:49 Hit on Up arrow, hyphen n5 and Enter.
02:55 Now the first 5 lines alone are displayed.
02:59 Let us switch back to the presentation
03:04 The tail command works exactly opposite to the head command, it displays the last 10 lines of a file by default.
03:12 I am hitting on ALT and Tab to switch to the terminal.
03:17 tail numbers dot txt
03:21 If we want to see just the last 5 lines, use the option hyphen n5 in between the tail command and the file name.
03:31 hyphen n5, Enter
03:36 Switch to slides
03:39 A log file contains events which took place in a system.
03:45 Auth dot log file maintains log's for who logged in & who logged out.
03:51 The most useful option of the tail command is to use hyphen f option to follow the tail of a log file.
03:59 If a new line is appended to the log file, the tail command will take that as the last line and display 10 lines by default above it.
04:09 Go to the terminal
04:11 tail hyphen f forward slash var slash log slash auth dot log
04:21 Let me resize this terminal
04:28 Let us open another Terminal , Application- > Accessories - > Terminal.
04:36 Let me resize this terminal
04:42 so that I can show you in a single screen how tail follows the last line in a log file.
04:50 Try to su as yourself, hit on enter.
04:54 Give in some wrong password hit on enter.
04:58 You will see that the terminal on which tail is running is appended with a new log.
05:05 The date & time specifies when the authentication failure took place.
05:13 Type date hit on enter to verify the system date and time.
05:22 Type Exit to close this terminal.
05:26 Hit CTRL C to close the running tail command & maximize the screen.
05:42 We have seen only auth dot log file in the previous example.
05:47 These are the commonly used log files in Linux.
05:51 A linux system administrator will look into these log files for more information to troubleshoot his machine if there is a problem.
06:02 Sort command as the name suggest will sort a file for us in both ascending and descending order.
06:13 sort numbers dot txt .This would sort our numbers dot txt file in ascending order.
06:21 Notice something is strange in there, sort just looks at the first character to sort, so 10,11&12 appears before the number 2.
06:33 To avoid this add the option of hyphen n, hyphen n and Enter
06:43 Now sort looks at the entire number to sort them.
06:47 To sort number dot txt in reverse order add an option of hyphen r.
06:59 We have numbers that repeat in this file, to pull out just the unique numbers add another option of hyphen u .
07:07 Go to Terminal.
07:09 Up Arrow
07:11 U, enter,
07:15 Previously two 2's were displayed . Now only one 2 is displayed.
07:28 Now we will see how we can sort a file based on certain column.
07:33 Let us create a file and key in these as shown below.
07:38 Go to Applications > Accessories > Text Editor.
07:46 I already have the data in another file for the sake of time constrain let me copy & Paste the value, CTRL+C; CTRL+V.
08:01 File, Save it as marks dot txt, Hit on Save.
08:11 Don't mind the special characters on this file I don't want someone to sue me for giving them low marks
08:18 Close this file.
08:24 Let us sort based on the second column of marks dot txt file.
08:30 Go to the terminal.
08:32 sort space marks dot txt space hyphen t space open inverted commas space close inverted commas space
08:43 here hyphen t stands for the delimiter & the space in between the quotes represents it.
08:52 hyphen k2 for the second column on which sort should be performed.
09:04 Hit on Enter.
09:10 Cat marks dot txt
09:14 This is the original file, if you see Avir is moved above and Bala came below when we sorted based on the second column alone.
09:33 Cut command is used to cut just certain information from a file.
09:41 Let us pull out the names from marks dot txt
09:44 Let us go to the terminal ALT Tab
09:48 cut space marks dot txt space hyphen d space open inverted commas space close inverted commas space.
09:58 here in cut command d is the delimiter & the space in between the quotes represents the delimiter.
10:10 hyphen f2 for the second column. Hit on enter.
10:21 Paste command will merge corresponding subsequent lines of the files.
10:26 Let us use both the numbers dot txt and marks dot txt file now.
10:31 Go to the terminal.
10:33 Paste numbers dot txt marks dot txt, enter
10:40 Now the first line of marks dot txt was appended to the first line of numbers dot txt.
10:47 We can use the redirect key to redirect this output to some other file called concatefile dot txt.
10:56 Go to the terminal.
10:58 Hit on Up arrow. Hit on the redirect key which is the Greater than symbol concatfile dot txt. Hit on Enter.
11:07 Cat concatfile dot txt
11:12 Let us go to the slide.
11:15 If we want paste to print out the numbers serially delimited with tab we can use the hyphen s option.
11:25 Paste hyphen s
11:29 numbers dot txt
11:33 Go to the slide.
11:34 Spoken Tutorial project is a part of Talk to a Teacher project,
11:39 Supported by the National Mission on Education through ICT,MHRD, Government of India.
11:45 For more information you can refer to the following link.
11:48 This is Bala. Thanks a lot for watching this video and dont forget to leave a comment.

Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14

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