PERL/C3/Perl-Module-Library-(CPAN)/English-timed - Revision history

Sandhya.np14 at 12:15, 5 October 2017

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Sandhya.np14 at 12:11, 5 October 2017

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Sandhya.np14 at 12:08, 5 October 2017

2017-10-05T12:08:12Z

PoojaMoolya at 12:56, 20 February 2017

2017-02-20T12:56:25Z

Sandhya.np14 at 07:32, 18 July 2016

2016-07-18T07:32:51Z

Sandhya.np14 at 09:09, 15 July 2016

2016-07-15T09:09:36Z

Sandhya.np14 at 09:06, 15 July 2016

2016-07-15T09:06:43Z

Sandhya.np14 at 07:55, 15 July 2016

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Sandhya.np14 at 05:27, 13 July 2016

2016-07-13T05:27:03Z

PoojaMoolya: Created page with " {| Border=1 | '''Time''' | '''Narration''' |- | 00:01 |Welcome to the''' Spoken Tutorial''' on''' How to use Perl Module Library ie. CPAN''' |- | 00:08 |In this tutorial..."

2016-07-12T10:58:28Z

Created page with " {| Border=1 | '''Time''' | '''Narration''' |- | 00:01 |Welcome to the''' Spoken Tutorial''' on''' How to use Perl Module Library ie. CPAN''' |- | 00:08 |In this tutorial..."

New page

{| Border=1
| '''Time'''
| '''Narration'''

|-
| 00:01
|Welcome to the''' Spoken Tutorial''' on''' How to use Perl Module Library ie. CPAN'''

|-
| 00:08
|In this tutorial we will learn to use existing '''modules''' and Create new '''modules''' in''' PERL'''.

|-
| 00:16
|To record this tutorial, I am using
* '''Ubuntu Linux 12.04''' operating system
* '''Perl 5.14.2 and'''
* '''gedit''' Text Editor

|-
| 00:28
|You can use any text editor of your choice.

|-
| 00:32
|To follow this tutorial, you should have working knowledge of''' Perl''' programming.

|-
| 00:37
|If not, then go through the relevant''' Perl''' spoken tutorials on the''' spoken tutorial''' website.

|-
| 00:43
|'''Modules '''
* These are code files that contain common routines
* That are written by different authors
* And can be used by several programs at a time

|-
| 00:55
|'''CPAN'''

* '''PERL''' is an open source language and anyone can contribute to '''PERL's''' standard '''CPAN library'''

|-
| 01:03
| '''CPAN '''has thousands of ready-to-use modules written by different authors

|-
|01:09
|The official website of '''CPAN '''is www.cpan.org

|-
| 01:17
|We will take''' List colon colon Util''' as an example and see how to use it.

|-
| 01:24
|This gives me access to the functions which are already written inside this module.

|-
| 01:30
|Switch to the''' terminal.'''

|-
| 01:32
|Type''' perldoc List colon colon Util '''

|-
| 01:38
| You may get an error saying ‘'''You need to install the perl hyphen doc package to use this program'''’

|-
| 01:46
|This indicates, you need to install the '''perl hyphen doc package.'''

|-
| 01:50
|Do so using '''Synaptic Package Manager.'''

|-
| 01:55
|Please refer to the relevant''' Linux''' spoken tutorials on the''' spoken tutorial''' website.

|-
| 02:01
|What you see here is the documentation for the''' List colon colon Util ''' module.

|-
| 02:08
|Note that the documentation contains

* description of the module,
* example of how to use it
* and an overview.

|-
|02:20
|Hit the ''''Q'''' key to exit the '''perldoc viewer'''.

|-
|02:25
|Next, we will see how to use''' List colon colon Util module''' in a '''Perl''' program.

|-
| 02:33
|Let me open a sample program''' exist underscore modules.pl''' which I have already saved.

|-
| 02:40
|In your''' exist underscore''' '''modules dot pl''' file, type the following code as displayed on the screen.

|-
| 02:47
|Let us understand the code now.

|-
| 02:50
|'''use List colon colon Util''' tells '''Perl '''to find and load the '''module List colon colon Util.'''

|-
| 03:00
|'''qw()''' function extracts words out of the string using a '''delimiter '''and returns the words as a list.

|-
| 03:09
| It is just a quick way of declaring an '''array'''.

|-
| 03:13
|While importing a '''module''', it imports only the '''subroutines''' specified in the list into our program.

|-
| 03:21
|It contains general-utility list of '''subroutines'''.

|-
| 03:26
|The '''module '''will export its '''subroutines '''and '''variables '''into our program.

|-
| 03:32
|The most popular '''subroutines '''available in''' List colon colon Util''' are:

'''first''' - which returns the first element in the list

|-
| 03:42
|'''max''' –this returns the highest numerical value in the list

|-
| 03:47
|'''maxstr''' returns the highest string in the list

|-
| 03:52
|'''min''' this returns the lowest numerical value

|-
| 03:57
|'''minstr''' – returns the lowest string in the list

|-
| 04:02
|'''shuffle''' – returns the values of the input in a random order

|-
| 04:08
|'''sum''' – returns the numerical sum of all the elements in the list

|-
| 04:14
|There is no need to write separate source code for each '''functions'''.

|-
| 04:18
|We can just make use of these available '''subroutines''' in our program.

|-
| 04:23
|These are the inputs I am passing to the function '''max, min, sum '''and''' shuffle.'''

|-
| 04:30
|And these are the '''print '''statements.

|-
| 04:33
|Now, press''' Ctrl+S''' to save the file.

|-
| 04:37
|Let us execute the program.

|-
| 04:40
|Switch back to the''' terminal''' and type '''perl exist underscore modules dot pl''' and press''' Enter'''.

|-
| 04:49
|Observe the output.

|-
| 04:51
|In '''Random number''', you may get any value between 0 and 51.

|-
| 04:58
|Next we will see how to create new '''Perl modules''' and add it to '''CPAN'''.

|-
| 05:04
|Below are the steps to create a '''module''':

|-
| 05:08
| Create a place to develop the '''module'''

|-
| 05:11
| Create skeleton files for the '''module'''

|-
| 05:14
| Document the '''module'''

|-
| 05:16
| Write the '''Perl code'''

|-
| 05:18
| Write the code for testing

|-
| 05:20
| Distribute the '''module '''in '''CPAN'''

|-
| 05:24
|'''Perl''' is distributed with a program called''' h2xs''' which is used to generate files for a new '''module'''.

|-
| 05:32
|'''Math colon colon Simple''' specifies our '''module''' name.

|-
| 05:37
|This is used to generate the directory, which should clearly identify the '''module''' it contains.

|-
| 05:43
|Basically, it creates skeleton files for the '''module'''.

''' hypen PAX''' are options that omit autoload and autogenerate.

|-
| 05:54
|Let's create a new '''module Math colon colon Simple.'''

|-
| 05:59
|It will be provided with simple functions:''' add, subtract, multiply '''and '''divide'''.

|-
| 06:06
|Let us switch to '''terminal''' to execute the''' h2xs''' command.

|-
| 06:12
|Type, '''h2xs hyphen PAXn Math colon colon Simple'''

|-
| 06:20
|The '''h2xs program''' generates all these files required to distribute the '''module'''.

|-
| 06:27
|Let us change directory to''' Math hyphen Simple '''

|-
| 06:33
|Note the '''directory''' path on your machine. It may be as''' Math forward slash Simple'''.

|-
| 06:41
|Type''' ls''' to list all the files in the '''directory.''' We can see the following files.

|-
| 06:49
|The''' changes''' file is
* where we will keep track of changes made to our '''module '''
* when we write new versions.

|-
| 06:58
|'''lib subdirectory '''contains the '''module'''.

|-
| 07:02
|'''MANIFEST''' contains a list of files in this '''directory'''.

|-
| 07:07
|'''Makefile''' is a '''Perl '''program used to create a '''Unix Makefile'''.
|-
| 07:12
|We will use this '''Makefile''' to test and install our '''module'''.

|-
| 07:18
|Test scripts will be in''' t subdirectory.'''

|-
| 07:22
|The tests are simple '''Perl scripts''' but with a''' dot t''' extension used for '''unit testing'''.

|-
| 07:30
|'''Simple.pm''' is our '''module'''.

|-
| 07:34
|All these files are generated automatically when we execute the '''h2xs command.'''

|-
| 07:41
| Let us open the''' simple.pm''' file.

|-
| 07:45
|Change the '''directory''' to''' lib forward slash Math'''

|-
| 07:51
|Now we will open the''' simple.pm''' file to see the existing content.

|-
| 07:57
|Type''' gedit Simple.pm'''

|-
| 08:02
|What we see here is a documented functional '''Perl module '''that doesn't do anything.

|-
| 08:09
|We have to write the required functions in this file to make it do something.

|-
| 08:16
|Add the below code after the text,''' Preloaded methods go here.'''

|-
| 08:22
|Here we will add four subroutines''' add, subtract, multiply '''and '''divide'''.

|-
| 08:29
|Now, press''' Ctrl+S''' to save the file.

|-
| 08:33
|Now let's create a sample Perl program to test our code that make sure it is working properly.

|-
| 08:41
|Let us open the test file''' Math-Simple.t''' under the subdirectory '''t.'''

|-
| 08:49
|Type '''gedit Math-Simple.t'''

|-
| 08:55
|Add the following code after the existing code, '''“Insert your test code below”,'''

|-
| 09:02
| The Print statements will print the output.

|-
| 09:06
|Now, press''' Ctrl+S''' to save the file.

|-
| 09:10
|Let us run the test script.

|-
| 09:13
|Type''' perl Math-simple.t '''and''' '''press''' Enter.'''

|-
| 09:19
|We see this error message because the '''Perl '''script cannot find '''Simple.pm''' in its directory.

|-
| 09:27
|It should look inside the''' lib''' directory. How can we rectify this error?

|-
| 09:33
|Let us see a few options for this.

|-
| 09:37
|'''At the rate INC''' is a special variable that contains a list of directories.

|-
| 09:43
|'''Perl modules '''and '''libraries '''can be loaded from these directories.

|-
| 09:48
|This line of code tells the '''Perl''' program to add this '''directory path''' to its''' at the rate INC''' search directory.

|-
| 09:57
|Alternately, we can add files to''' at the rate INC''' at runtime using''' -I''' option.

|-
| 10:06
|Now let us switch to the '''terminal'''.

|-
| 10:10
|I will execute the program using the -I '''command line parameter'''

|-
| 10:16
|So, I will type '''perl -Ilib t/Math-Simple.t'''

|-
| 10:24
|Here is the output as expected.

|-
| 10:27
|We have tested the module and it is working fine.

|-
| 10:31
|Final step is to distribute the module.

|-
| 10:34
|The general procedure for installing module is to run these commands.

|-
| 10:40
|Installation involves copying files into the Perl library directory.

|-
| 10:45
|Most of us don't have permission to copy into this directory.

|-
| 10:49
|Since '''Math-Simple''' isn't a very useful module, I am not demonstrating the installation part.
|-
| 10:57
|This brings us to the end of this tutorial. Let us summarise.

|-
| 11:02
|In this tutorial we learnt to

* Use existing '''modules'''
* Create new '''modules'''
and how to use in the Perl program.

|-
| 11:11
|Here is an assignment for you.

|-
| 11:13
|Use the''' Text colon colon Wrap''' module

|-
|11:17
| Make use of the''' Wrap()''' function which wraps the input text to form neat paragraphs.

|-
| 11:24
| '''Text colon colon Wrap''' module has a variable''' columns.''' Set the''' columns''' value to''' 30.'''

|-
| 11:31
| Print the text to see the formatted output.

|-
| 11:35
|The video at the following link summarises the Spoken Tutorial project.
Please download and watch it

|-
| 11:42
|The''' Spoken Tutorial Project''' Team
* conducts workshops using spoken tutorials
* and gives certificates on passing online tests.

|-
| 11:51
|For more details, please write to us.

|-
| 11:55
|Spoken Tutorial project is funded by NMEICT, MHRD, Government of India.

|-
| 12:02
|More information on this mission is available at this link.

|-
| 12:06
|This is Nirmala Venkat from IIT Bombay, signing off. Thanks for watching.
|}

@@ Line 15: / Line 15: @@
 | 00:16
 |To record this tutorial, I am using:
-*'''Ubuntu Linux''' 12.04 operating system
+'''Ubuntu Linux''' 12.04 operating system
-*'''Perl''' 5.14.2 and
+'''Perl''' 5.14.2 and
-*''''gedit' Text Editor'''.
+''''gedit' Text Editor'''.
 |-
@@ Line 34: / Line 34: @@
 | 00:43
 |'''Modules: '''
-* These are code files that contain common routines
+These are code files that contain common routines
-* That are written by different authors
+That are written by different authors
-* And, can be used by several programs at a time.
+And, can be used by several programs at a time.
 |-

@@ Line 15: / Line 15: @@
 | 00:16
 |To record this tutorial, I am using:
-'''Ubuntu Linux''' 12.04 operating system
+*'''Ubuntu Linux''' 12.04 operating system
-'''Perl''' 5.14.2 and
+*'''Perl''' 5.14.2 and
-''''gedit' Text Editor'''.
+*''''gedit' Text Editor'''.
 |-
@@ Line 34: / Line 34: @@
 | 00:43
 |'''Modules: '''
-*These are code files that contain common routines
+* These are code files that contain common routines
-*That are written by different authors
+* That are written by different authors
-*And, can be used by several programs at a time.
+* And, can be used by several programs at a time.
 |-

@@ Line 34: / Line 34: @@
 | 00:43
 |'''Modules: '''
-These are code files that contain common routines
+*These are code files that contain common routines
-That are written by different authors
+*That are written by different authors
-And, can be used by several programs at a time.
+*And, can be used by several programs at a time.
 |-

@@ Line 15: / Line 15: @@
 | 00:16
 |To record this tutorial, I am using:
-* '''Ubuntu Linux''' 12.04 operating system
+'''Ubuntu Linux''' 12.04 operating system
-* '''Perl''' 5.14.2 and
+'''Perl''' 5.14.2 and
-* ''''gedit' Text Editor'''.
+''''gedit' Text Editor'''.
 |-
@@ Line 34: / Line 34: @@
 | 00:43
 |'''Modules: '''
-* These are code files that contain common routines
+These are code files that contain common routines
-* That are written by different authors
+That are written by different authors
-* And, can be used by several programs at a time.
+And, can be used by several programs at a time.
 |-
 | 00:55
-|'''CPAN:'''
+|'''CPAN:'''PERL is an '''open source''' language and anyone can contribute to PERL's standard '''CPAN library'''.
 PERL is an '''open source''' language and anyone can contribute to PERL's standard '''CPAN library'''.
 |-
@@ Line 91: / Line 90: @@
 | 02:08
 |Note that the documentation contains-
-* description of the module,
+description of the module,
-* example of how to use it
+example of how to use it
-* and an '''overview'''.
+and an '''overview'''.
 |-
@@ Line 250: / Line 249: @@
 |-
 | 05:43
-|Basically, it creates skeleton files for the module.
+|Basically, it creates skeleton files for the module.''' hyphen PAX''' are options that omit '''autoload''' and '''autogenerate'''.
 ''' hyphen PAX''' are options that omit '''autoload''' and '''autogenerate'''.
 |-
@@ Line 462: / Line 460: @@
 | 11:02
 |In this tutorial, we learnt to:
-* Use existing modules
+Use existing modules
-* Create new modules
+Create new modules and how to use in the Perl program.
 and how to use in the Perl program.
 |-
@@ Line 488: / Line 485: @@
 |-
 | 11:35
-|The video at the following link summarizes the '''Spoken Tutorial''' project.
+|The video at the following link summarizes the '''Spoken Tutorial''' project.Please download and watch it.
 Please download and watch it.
 |-
 | 11:42
 |The''' Spoken Tutorial Project''' team:
-* conducts workshops using spoken tutorials
+conducts workshops using spoken tutorials and gives certificates on passing online tests.
-* and gives certificates on passing online tests.
 |-

@@ Line 41: / Line 41: @@
 | 00:55
 |'''CPAN:'''
-* PERL is an '''open source''' language and anyone can contribute to PERL's standard '''CPAN library'''.
+PERL is an '''open source''' language and anyone can contribute to PERL's standard '''CPAN library'''.
 |-
@@ Line 310: / Line 310: @@
 |-
 | 07:22
-|The tests are simple '''Perl scripts''' but with a''' dot t''' extension used for '''unit testing'''.
+|The tests are simple '''Perl scripts''' but with a''' dot t extension''' used for '''unit testing'''.
 |-

@@ Line 50: / Line 50: @@
 |01:09
 |The official website of '''CPAN '''is:
-www.cpan.org
+'''www.cpan.org'''
 |-
@@ Line 66: / Line 66: @@
 |-
 | 01:32
-|Type:''' perldoc List colon colon Util'''
+|Type:''' perldoc List colon colon Util'''.
 |-
@@ Line 74: / Line 74: @@
 |-
 | 01:46
-|This indicates, you need to install the '''perl hyphen doc package.'''
+|This indicates, you need to install the '''perl hyphen doc''' package.
 |-
@@ Line 93: / Line 93: @@
 * description of the module,
 * example of how to use it
-* and an overview.
+* and an '''overview'''.
 |-
@@ Line 101: / Line 101: @@
 |-
 |02:25
-|Next, we will see how to use''' List colon colon Util module''' in a '''Perl''' program.
+|Next, we will see how to use''' List colon colon Util''' module in a '''Perl''' program.
 |-
@@ Line 117: / Line 117: @@
 |-
 | 02:50
-|'''use List colon colon Util''' tells '''Perl''' to find and load the '''module List colon colon Util.'''
+|'''use List colon colon Util''' tells '''Perl''' to find and '''load''' the module '''List colon colon Util.'''
 |-
@@ Line 142: / Line 142: @@
 | 03:32
 |The most popular '''subroutines '''available in''' List colon colon Util''' are:
-'''first''' - which returns the first element in the list.
+'''first''' - which returns the first '''element''' in the '''list'''.
 |-
@@ Line 162: / Line 162: @@
 |-
 | 04:02
-|'''shuffle''' – returns the values of the input in a random order.
+|'''shuffle''' – this returns the values of the '''input''' in a random order.
 |-
@@ Line 206: / Line 206: @@
 |-
 | 04:58
-|Next we will see how to create new '''Perl modules''' and add it to '''CPAN'''.
+|Next, we will see how to create a new '''Perl module''' and add it to '''CPAN'''.
 |-
@@ Line 267: / Line 267: @@
 |-
 | 06:12
-|Type: '''h2xs hyphen PAXn Math colon colon Simple'''
+|Type: '''h2xs hyphen PAXn Math colon colon Simple'''.
 |-
 | 06:20
-|The '''h2xs program''' generates all these files required to distribute the module.
+|The '''h2xs''' program generates all these files required to distribute the module.
 |-
@@ Line 287: / Line 287: @@
 |-
 | 06:49
-|The "Changes" file is where we will keep track of changes made to our module when we write new versions.
+|The "Changes" file is where we will keep track of changes, made to our module, when we write new versions.
 |-
 | 06:58
-|'''lib subdirectory '''contains the '''module'''.
+|'''lib subdirectory '''contains the module.
 |-
@@ Line 302: / Line 302: @@
 |-
 | 07:12
-|We will use this '''Makefile''' to test and install our '''module'''.
+|We will use this '''Makefile''' to test and install our module.
 |-
 | 07:18
-|Test scripts will be in''' 't' subdirectory.'''
+|'''Test script'''s will be in''' 't' subdirectory.'''
 |-
 | 07:22
-|The tests are simple '''Perl scripts''' but with a''' dot t extension''' used for '''unit testing'''.
+|The '''tests''' are simple '''Perl scripts''', but with a''' dot t extension''' used for '''unit testing'''.
 |-
@@ Line 318: / Line 318: @@
 |-
 | 07:34
-|All these files are generated automatically when we execute the '''h2xs command.'''
+|All these files are generated automatically when we execute the '''h2xs''' command.
 |-
@@ Line 334: / Line 334: @@
 |-
 | 07:57
-|Type:''' gedit Simple.pm'''
+|Type:''' gedit Simple.pm'''.
 |-
 | 08:02
-|What we see here is a documented, functional '''Perl module '''that doesn't do anything.
+|What we see here is a documented, functional Perl module that doesn't do anything.
 |-
@@ Line 350: / Line 350: @@
 |-
 | 08:22
-|Here we will add four subroutines''' add, subtract, multiply '''and '''divide'''.
+|Here, we will add four subroutines''' add, subtract, multiply '''and '''divide'''.
 |-
@@ Line 370: / Line 370: @@
 |-
 | 08:55
-|Add the following code after the existing code, “Insert your test code below..”.
+|Add the following code after the existing code: “Insert your test code below..”.
 |-
@@ Line 382: / Line 382: @@
 |-
 | 09:10
-|Let us '''run''' the test script.
+|Let us '''run''' the '''test script'''.
 |-
@@ Line 406: / Line 406: @@
 |-
 | 09:43
-|Perl modules and '''libraries '''can be '''load'''ed from these directories.
+|Perl modules and '''libraries '''can be loaded from these directories.
 |-
@@ Line 488: / Line 488: @@
 |-
 | 11:35
-|The video at the following link summarizes the Spoken Tutorial project.
+|The video at the following link summarizes the '''Spoken Tutorial''' project.
 Please download and watch it.

@@ Line 40: / Line 40: @@
 |-
 | 00:55
-|'''CPAN'''
+|'''CPAN:'''
-−
 * PERL is an '''open source''' language and anyone can contribute to PERL's standard '''CPAN library'''.
@@ Line 91: / Line 90: @@
 |-
 | 02:08
 |Note that the documentation contains-
-−
 * description of the module,
 * example of how to use it
@@ Line 100: / Line 98: @@
 |02:20
 |Hit the 'Q' key to exit the '''perldoc viewer'''.
 |-
@@ Line 145: / Line 142: @@
 | 03:32
 |The most popular '''subroutines '''available in''' List colon colon Util''' are:
 '''first''' - which returns the first element in the list.
@@ Line 198: / Line 194: @@
 |-
 | 04:40
-|Switch back to the''' terminal''' and type:  '''perl exist underscore modules dot pl''' and press''' Enter'''.
+|Switch back to the terminal and type:  '''perl exist underscore modules dot pl''' and press''' Enter'''.
 |-
@@ Line 226: / Line 222: @@
 |-
 | 05:14
-| Document the module.
+| '''Document''' the module.
 |-
@@ Line 255: / Line 251: @@
 | 05:43
 |Basically, it creates skeleton files for the module.
-''' hypen PAX''' are options that omit '''autoload''' and '''autogenerate'''.
+''' hyphen PAX''' are options that omit '''autoload''' and '''autogenerate'''.
 |-
@@ Line 275: / Line 271: @@
 |-
 | 06:20
-|The '''h2xs program''' generates all these files required to distribute the '''module'''.
+|The '''h2xs program''' generates all these files required to distribute the module.
 |-
@@ Line 299: / Line 295: @@
 |-
 | 07:02
-|'''MANIFEST''' contains a list of files in this '''directory'''.
+|'''MANIFEST''' contains a list of files in this directory.
 |-
 | 07:07
-|'''Makefile''' is a '''Perl '''program used to create a '''Unix Makefile'''.
+|'''Makefile''' is a Perl program used to create a '''Unix Makefile'''.
 |-
 | 07:12
@@ Line 310: / Line 306: @@
 |-
 | 07:18
-|Test scripts will be in''' t subdirectory.'''
+|Test scripts will be in''' 't' subdirectory.'''
 |-
@@ Line 318: / Line 314: @@
 |-
 | 07:30
-|'''Simple.pm''' is our '''module'''.
+|'''Simple.pm''' is our module.
 |-
@@ Line 330: / Line 326: @@
 |-
 | 07:45
-|Change the '''directory''' to''' lib forward slash Math'''
+|Change the directory to''' lib forward slash Math'''.
 |-
 | 07:51
-|Now we will open the''' simple.pm''' file to see the existing content.
+|Now, we will open the''' simple.pm''' file to see the existing content.
 |-
@@ Line 342: / Line 338: @@
 |-
 | 08:02
-|What we see here is a documented functional '''Perl module '''that doesn't do anything.
+|What we see here is a documented, functional '''Perl module '''that doesn't do anything.
 |-
@@ Line 350: / Line 346: @@
 |-
 | 08:16
-|Add the below code after the text,''' Preloaded methods go here.'''
+|Add the below code after the text: "Preloaded methods go here".
 |-
@@ Line 362: / Line 358: @@
 |-
 | 08:33
-|Now, let's create a sample Perl program to test our code that make sure it is working properly.
+|Now, let's create a sample Perl program to test our code that makes sure it is working properly.
 |-
@@ Line 374: / Line 370: @@
 |-
 | 08:55
-|Add the following code after the existing code, '''“Insert your test code below”,'''
+|Add the following code after the existing code, “Insert your test code below..”.
 |-
@@ Line 394: / Line 390: @@
 |-
 | 09:19
-|We see this error message because the '''Perl '''script cannot find '''Simple.pm''' in its directory.
+|We see this '''error''' message because the '''Perl '''script cannot find '''Simple.pm''' in its directory.
 |-
@@ Line 410: / Line 406: @@
 |-
 | 09:43
-|'''Perl modules '''and '''libraries '''can be loaded from these directories.
+|Perl modules and '''libraries '''can be '''load'''ed from these directories.
 |-
@@ Line 418: / Line 414: @@
 |-
 | 09:57
-|Alternately, we can add files to''' at the rate INC''' at runtime using''' -I''' option.
+|Alternately, we can add files to''' at the rate INC''' at run time using '-I' option.
 |-
 | 10:06
-|Now let us switch to the '''terminal'''.
+|Now, let us switch to the terminal.
 |-
 | 10:10
-|I will '''execute''' the program using the -I '''command line parameter'''.
+|I will '''execute''' the program using the''' '-I' command line parameter'''.
 |-
@@ Line 466: / Line 462: @@
 | 11:02
 |In this tutorial, we learnt to:
-* Use existing '''modules'''
+* Use existing modules
-* Create new '''modules'''
+* Create new modules
 and how to use in the Perl program.
@@ Line 484: / Line 480: @@
 |-
 | 11:24
-| '''Text colon colon Wrap''' module has a variable-''' columns.''' Set the''' columns''' value to''' 30.'''
+| '''Text colon colon Wrap''' module has a variable- "columns". Set the''' columns''' value to 30.
 |-
@@ Line 492: / Line 488: @@
 |-
 | 11:35
-|The video at the following link summarises the Spoken Tutorial project.
+|The video at the following link summarizes the Spoken Tutorial project.
 Please download and watch it.

@@ Line 340: / Line 340: @@
 |-
 | 07:57
-|Type''' gedit Simple.pm'''
+|Type:''' gedit Simple.pm'''
 |-
@@ Line 360: / Line 360: @@
 |-
 | 08:29
-|Now, press''' Ctrl+S''' to save the file.
+|Now, press''' Ctrl+S''' to '''save''' the file.
 |-
 | 08:33
-|Now let's create a sample Perl program to test our code that make sure it is working properly.
+|Now, let's create a sample Perl program to test our code that make sure it is working properly.
 |-
 | 08:41
-|Let us open the test file''' Math-Simple.t''' under the subdirectory '''t.'''
+|Let us open the test file''' Math-Simple.t''' under the subdirectory 't'.
 |-
 | 08:49
-|Type '''gedit Math-Simple.t'''
+|Type: '''gedit Math-Simple.t'''
 |-
@@ Line 380: / Line 380: @@
 |-
 | 09:02
-| The Print statements will print the output.
+| The '''Print''' statements will print the output.
 |-
 | 09:06
-|Now, press''' Ctrl+S''' to save the file.
+|Now, press''' Ctrl+S''' to '''save''' the file.
 |-
 | 09:10
-|Let us run the test script.
+|Let us '''run''' the test script.
 |-
 | 09:13
-|Type''' perl Math-simple.t '''and''' '''press''' Enter.'''
+|Type:''' perl Math-simple.t '''and press''' Enter.'''
 |-
@@ Line 428: / Line 428: @@
 |-
 | 10:10
-|I will execute the program using the -I '''command line parameter'''
+|I will '''execute''' the program using the -I '''command line parameter'''.
 |-
 | 10:16
-|So, I will type '''perl -Ilib t/Math-Simple.t'''
+|So, I will type: '''perl -Ilib t/Math-Simple.t'''
 |-
@@ Line 448: / Line 448: @@
 |-
 | 10:34
-|The general procedure for installing module is to run these commands.
+|The general procedure for installing module is to '''run''' these commands.
 |-
 | 10:40
-|Installation involves copying files into the Perl library directory.
+|Installation involves copying files into the '''Perl library directory'''.
 |-
@@ Line 463: / Line 463: @@
 |-
 | 10:57
-|This brings us to the end of this tutorial. Let us summarise.
+|This brings us to the end of this tutorial. Let us summarize.
 |-
 | 11:02
-|In this tutorial we learnt to
+|In this tutorial, we learnt to:
-−
 * Use existing '''modules'''
 * Create new '''modules'''
@@ Line 479: / Line 478: @@
 |-
 | 11:13
-|Use the''' Text colon colon Wrap''' module
+|Use the''' Text colon colon Wrap''' module.
 |-
@@ Line 487: / Line 486: @@
 |-
 | 11:24
-| '''Text colon colon Wrap''' module has a variable''' columns.''' Set the''' columns''' value to''' 30.'''
+| '''Text colon colon Wrap''' module has a variable-''' columns.''' Set the''' columns''' value to''' 30.'''
 |-
@@ Line 496: / Line 495: @@
 | 11:35
 |The video at the following link summarises the Spoken Tutorial project.
-Please download and watch it
+Please download and watch it.
 |-
 | 11:42
-|The''' Spoken Tutorial Project''' Team
+|The''' Spoken Tutorial Project''' team:
 * conducts workshops using spoken tutorials
 * and gives certificates on passing online tests.
@@ Line 518: / Line 517: @@
 |-
 | 12:06
-|This is Nirmala Venkat from IIT Bombay, signing off. Thanks for watching.
+|This is Nirmala Venkat from '''IIT Bombay''', signing off. Thanks for watching.
 |}