Difference between revisions of "BOSS-Linux/C2/Simple-filters/English-timed"
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|'''Narration''' | |'''Narration''' | ||
|- | |- | ||
− | | 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: | + | |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: | + | | 00:18 |
− | | All these are command line text manipulation | + | | All these are '''command line text manipulation tool'''s. |
|- | |- | ||
| 00:22 | | 00:22 | ||
− | | If you see a hash (#) symbol on the Terminal you need to become root to execute those | + | | If you see a hash (#) symbol on the Terminal, you need to become '''root''' to '''execute''' those '''command'''s. |
|- | |- | ||
|00:29 | |00:29 | ||
− | |'''sudo su''' or '''su root''' | + | |'''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 | | 00:38 | ||
− | | I assume that you did a default installation and did not modify any path where the files are getting saved. | + | | I assume that you did a default installation and did not modify any '''path''' where the files are getting saved. |
|- | |- | ||
| 00:46 | | 00:46 | ||
− | | I am using | + | | I am using '''Linux''' for this tutorial. |
|- | |- | ||
|00:51 | |00:51 | ||
− | |Prerequisites for this module are the ability to use the mouse , keyboard, maximize and minimize buttons on a window. | + | |Prerequisites for this module are- the ability to use the '''mouse''', keyboard, maximize and minimize buttons on a '''window'''. |
|- | |- | ||
|01:02 | |01:02 | ||
− | | We use the Head command followed by an '''ascii''' file name | + | | 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 | + | | Let us create a file. |
|- | |- | ||
− | | 01: | + | | 01:13 |
|Go to '''Applications > Accessories > Text Editor.''' | |Go to '''Applications > Accessories > Text Editor.''' | ||
|- | |- | ||
− | | 01: | + | | 01:20 |
− | |I already have these numbers in another file for the sake of time | + | |I already have these numbers in another file for the sake of time constraint. |
|- | |- | ||
− | | 01: | + | | 01:26 |
|Let me copy and paste. | |Let me copy and paste. | ||
|- | |- | ||
− | | 01: | + | | 01:34 |
− | | Hit on '''File''' , '''Save.''' | + | | Hit on '''File''', '''Save.''' |
|- | |- | ||
− | | 01: | + | | 01:37 |
− | |Name the file as '''numbers dot txt''' and hit on ''' | + | |Name the file as '''numbers dot txt''' and hit on '''Save'''. |
|- | |- | ||
− | | 01: | + | | 01:44 |
|Close this file. | |Close this file. | ||
|- | |- | ||
− | | 01: | + | | 01:50 |
− | | Now go to '''Applications > Accessories > Terminal.''' | + | | Now, go to '''Applications > Accessories > Terminal.''' |
|- | |- | ||
− | | | + | | 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: | + | | 02:02 |
− | |Type '''ls''' and hit on ''' | + | |Type '''ls''' and hit on '''Enter.''' |
|- | |- | ||
− | | 02: | + | | 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: | + | | 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: | + | | 02:18 |
− | | '''Cat n-u-m''' Hit on '''tab''' to | + | | '''Cat n-u-m'''. Hit on '''tab''' to auto-fill the file name. Hit on '''Enter.''' |
|- | |- | ||
− | | 02: | + | | 02:26 |
− | | Let us do the same with head command. | + | | Let us do the same with the '''head''' command. |
|- | |- | ||
− | | 02: | + | | 02:30 |
− | | '''head numbers dot txt''' | + | | '''head numbers dot txt''' '''Enter'''. |
|- | |- | ||
− | | 02: | + | | 02:36 |
| Now the first 10 lines are displayed. | | Now the first 10 lines are displayed. | ||
|- | |- | ||
− | | 02: | + | | 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 name. |
|- | |- | ||
− | | 02: | + | | 02:49 |
− | | Hit on Up arrow, '''hyphen n5''' and '''Enter.''' | + | | Hit on Up-arrow, '''hyphen n5''' and '''Enter.''' |
|- | |- | ||
− | | 02: | + | | 02:55 |
− | | Now the first 5 lines alone are displayed. | + | | Now, the first 5 lines alone are displayed. |
|- | |- | ||
− | | | + | | 02:59 |
− | |Let us switch back to the presentation | + | |Let us switch back to the presentation. |
+ | |||
|- | |- | ||
− | | 03: | + | | 03:04 |
− | |''' | + | | The '''tail''' command works exactly opposite to the '''head''' command, it displays the last 10 lines of a file, by default. |
|- | |- | ||
− | | 03: | + | | 03:12 |
− | | | + | | I am hitting on '''ALT''' and '''Tab''' to switch to the '''terminal'''. |
|- | |- | ||
− | | 03: | + | | 03:17 |
− | + | ||
− | + | ||
− | + | ||
| '''tail numbers dot txt''' | | '''tail numbers dot txt''' | ||
|- | |- | ||
− | | 03: | + | | 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: | + | | 03:31 |
− | | '''hyphen n5''', '''Enter''' | + | | '''hyphen n5''', '''Enter'''. |
|- | |- | ||
− | | 03: | + | | 03:36 |
− | | Switch to slides | + | | Switch to slides. |
|- | |- | ||
− | | 03: | + | | 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: | + | | 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. | ||
|- | |- | ||
− | | | + | | 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. |
+ | |- | ||
+ | | 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 | | 04:09 | ||
− | | | + | | Go to the '''terminal'''. |
|- | |- | ||
− | | 04: | + | | 04:11 |
− | | | + | |'''tail hyphen f forward slash var slash log slash auth dot log'''. |
|- | |- | ||
| 04:21 | | 04:21 | ||
− | | | + | | Let me resize this terminal. |
|- | |- | ||
− | | 04: | + | | 04:28 |
− | | Let | + | | Let us open another Terminal, '''Applications -> Accessories -> Terminal.''' |
|- | |- | ||
− | | 04: | + | | 04:36 |
− | + | ||
− | + | ||
− | + | ||
| Let me resize this terminal | | Let me resize this terminal | ||
|- | |- | ||
− | | 04: | + | | 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. | ||
|- | |- | ||
− | | | + | | 04:50 |
− | | Try to '''su''' as yourself, hit on ''' | + | | Try to '''su''' as yourself, hit on '''Enter.''' |
|- | |- | ||
− | | | + | | 04:54 |
− | | Give in some wrong password hit on ''' | + | | Give in some wrong password and hit on '''Enter.''' |
|- | |- | ||
− | | | + | | 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: | + | | 05:05 |
− | |The date & time | + | |The date & time specify when the '''authentication failure''' took place. |
|- | |- | ||
− | | 05: | + | | 05:13 |
− | | Type '''date''' hit on ''' | + | | Type: '''date''', hit on '''Enter''' to verify the system date and time. |
|- | |- | ||
− | | 05: | + | | 05:22 |
| Type '''Exit''' to close this terminal. | | Type '''Exit''' to close this terminal. | ||
|- | |- | ||
− | | 05: | + | | 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: | + | | 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: | + | | 05:47 |
− | |These are the commonly used log | + | |These are the commonly used '''log file'''s 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: | + | | 06:02 |
− | | | + | | '''"Sort"''' command, as the name suggests, will sort a file for us in both ascending and descending order. |
|- | |- | ||
− | | 06: | + | | 06:13 |
− | | ''' | + | | '''sort numbers dot txt'''. This would sort our '''numbers dot txt''' file in ascending order. |
|- | |- | ||
− | | 06: | + | | 06:21 |
− | | '''sort | + | | Notice something is strange in there, '''sort''' just looks at the first character to sort, so '''10''', '''11''' & '''12''' appear before the number 2. |
|- | |- | ||
− | | 06: | + | | 06:33 |
− | | | + | | To avoid this, add the option of '''-n''' hyphen n and Enter. |
|- | |- | ||
| 06:43 | | 06:43 | ||
− | | | + | | Now, sort looks at the entire number to sort them. |
|- | |- | ||
− | | 06: | + | | 06:47 |
− | | | + | | To sort '''numbers dot txt''' in reverse order, add an option of '''hyphen r.''' |
|- | |- | ||
− | | 06: | + | | 06:59 |
− | | To | + | | We have numbers that repeat in this file. To pull out just the unique numbers, add another option of '''hyphen u'''. |
|- | |- | ||
− | | 07: | + | | 07:07 |
− | + | ||
− | + | ||
− | + | ||
| Go to Terminal. | | Go to Terminal. | ||
|- | |- | ||
− | |07: | + | |07:09 |
− | | Up Arrow | + | | Up-Arrow. |
|- | |- | ||
− | | 07: | + | | 07:11 |
− | |'''U, | + | |'''U, Enter'''. |
|- | |- | ||
− | | 07: | + | | 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: | + | | 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: | + | | 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: | + | | 07:38 |
|Go to '''Applications > Accessories > Text Editor.''' | |Go to '''Applications > Accessories > Text Editor.''' | ||
|- | |- | ||
− | | 07: | + | | 07:46 |
− | | I already have the data in another file for the sake of time | + | | I already have the data in another file for the sake of time constraint. Let me copy & Paste the value, '''CTRL+C; CTRL+V.''' |
|- | |- | ||
− | | 08: | + | | 08:01 |
| File, Save it as '''marks dot txt''', Hit on '''Save.''' | | File, Save it as '''marks dot txt''', Hit on '''Save.''' | ||
|- | |- | ||
− | | 08: | + | | 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: | + | | 08:18 |
| Close this file. | | Close this file. | ||
|- | |- | ||
− | | 08: | + | | 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: | + | | 08:30 |
| Go to the terminal. | | Go to the terminal. | ||
|- | |- | ||
− | | 08: | + | | 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: | + | | 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. | + | |'''hyphen k2''' for the second column on which '''sort''' should be performed. |
|- | |- | ||
− | | 09: | + | | 09:04 |
|Hit on '''Enter.''' | |Hit on '''Enter.''' | ||
|- | |- | ||
− | | 09: | + | | 09:10 |
− | |'''Cat marks dot txt''' | + | |'''Cat marks dot txt'''. |
|- | |- | ||
− | | 09: | + | | 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: | + | | 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: | + | | 09:41 |
− | |Let us pull out the names from '''marks dot txt''' | + | |Let us pull out the names from '''marks dot txt'''. |
|- | |- | ||
− | | 09: | + | | 09:44 |
− | |Let us go to the terminal '''ALT Tab''' | + | |Let us go to the terminal '''ALT Tab'''. |
|- | |- | ||
− | | 09: | + | | 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.''' | ||
|- | |- | ||
− | | | + | |09:58 |
− | | | + | |Here in '''cut''' command, 'd' is the delimiter & the space in between the quotes represents the delimiter. |
|- | |- | ||
− | |10: | + | |10:10 |
− | |'''hyphen f2''' for the second column. Hit on ''' | + | |'''hyphen f2''' for the second column. Hit on '''Enter.''' |
|- | |- | ||
− | |10: | + | |10:21 |
|'''Paste''' command will merge corresponding subsequent lines of the files. | |'''Paste''' command will merge corresponding subsequent lines of the files. | ||
|- | |- | ||
− | |10: | + | |10:26 |
− | | Let us use both | + | | Let us use both, '''numbers dot txt''' and '''marks dot txt''' files now. |
|- | |- | ||
− | |10: | + | |10:31 |
|Go to the terminal. | |Go to the terminal. | ||
|- | |- | ||
− | |10: | + | |10:33 |
− | |''' | + | |'''paste numbers dot txt marks dot txt''', '''Enter'''. |
|- | |- | ||
− | |10: | + | |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: | + | |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.''' |
|- | |- | ||
− | | | + | | 10:56 |
| Go to the terminal. | | 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.''' | + | | Hit on Up-arrow. Hit on the redirect key which is the Greater-than symbol. '''concatfile dot txt'''. Hit on '''Enter.''' |
|- | |- | ||
− | | 11: | + | | 11:07 |
− | | '''Cat concatfile dot txt''' | + | | '''Cat concatfile dot txt'''. |
|- | |- | ||
− | | 11: | + | | 11:12 |
| Let us go to the slide. | | 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 | | 11:25 | ||
− | | | + | | '''paste hyphen s''' |
|- | |- | ||
− | | 11: | + | |11:29 |
− | | ''' | + | |'''numbers dot txt''' |
+ | |- | ||
+ | | 11:33 | ||
+ | | Go to the slide. '''Spoken Tutorial''' project is a part of '''Talk to a Teacher''' project, | ||
|- | |- | ||
|11:39 | |11:39 | ||
− | | | + | |supported by the National Mission on Education through ICT, MHRD, Government of India. |
− | + | ||
− | + | ||
− | + | ||
|- | |- | ||
| 11:45 | | 11:45 | ||
− | | | + | | For more information, you can refer to the following link. |
|- | |- | ||
− | |11: | + | |11:48 |
− | | | + | |This is Bala. Thanks a lot for watching this video and don't forget to leave a comment. |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
|} | |} |
Latest revision as of 12:32, 24 March 2017
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 constraint. |
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 auto-fill the file name. Hit on Enter. |
02:26 | Let us do the same with the 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 name. |
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, Applications -> 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 and 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 specify 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 suggests, 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 appear before the number 2. |
06:33 | To avoid this, add the option of -n hyphen n and Enter. |
06:43 | Now, sort looks at the entire number to sort them. |
06:47 | To sort numbers 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 constraint. 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, numbers dot txt and marks dot txt files 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. 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 don't forget to leave a comment. |