BASH/C2/More-on-Loops/English-timed - Revision history

Pratik kamble at 11:18, 23 March 2017

2017-03-23T11:18:34Z

Pratik kamble at 10:02, 7 March 2017

2017-03-07T10:02:25Z

Sandhya.np14 at 12:12, 13 July 2015

2015-07-13T12:12:16Z

Sandhya.np14 at 15:55, 3 July 2015

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Pratik kamble at 08:47, 20 November 2014

2014-11-20T08:47:06Z

Pratik kamble: Created page with "{| Border =1 | '''Time''' |'''Narration''' |- | 00:01 | Welcome to the spoken tutorial on '''Nested for loop in BASH''' |- | 00:07 | In this tutorial, we will learn '''Nes..."

2014-11-20T08:46:14Z

Created page with "{| Border =1 | '''Time''' |'''Narration''' |- | 00:01 | Welcome to the spoken tutorial on '''Nested for loop in BASH''' |- | 00:07 | In this tutorial, we will learn '''Nes..."

New page

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

|-
| 00:01
| Welcome to the spoken tutorial on '''Nested for loop in BASH'''

|-
| 00:07
| In this tutorial, we will learn '''Nested for loop''' With the help of an example.

|-
| 00:13
| To record this tutorial I am using '''Ubuntu Linux''' 12.04 '''Operating System''' and '''GNU BASH''' version 4.1.10

|-
| 00:24
|Please note,''' GNU Bash''' version 4 or above is recommended for practice.

|-
|00:31
| To learn this tutorial, you should be familiar with '''loops''' in '''Bash'''.

|-
| 00:37
|For relevant tutorials, please visit our website which as shown http://spoken-tutorial.org

|-
| 00:43
| Let us start with an introduction to '''nested loop.'''

|-
|00:46
|A loop within a loop is known as '''nested loop.'''

|-
| 00:51
| Let us see the syntax Outer '''for loop''' '''expression 1, 2, 3'''

|-
| 00:57
|Inner '''for loop''' '''expression 1, 2, 3'''

|-
| 01:01
| '''statement 1''' '''statement 2'''

|-
| 01:04
| Closing Inner '''for loop''' Closing Outer '''for loop'''

|-
| 01:09
| Let us see an example on '''nested for loop'''.

|-
| 01:12
| First let us go through the directory structure.

|-
|01:17
|Here is a directory on the '''Desktop''' named '''simple-nested-for'''. Let's open it.

|-
| 01:24
| We have subdirectories '''test''', '''test2''' and '''test3''' and a '''Bash script'''.

|-
|01:31
|In each sub-directory, there are multiple''' text files'''.

|-
|01:36
| Now we will move on to our code.

|-
|01:39
|This program displays all the files within each subdirectory.

|-
|01:45
|Please note that the same can be acheived with a single line command '''ls -1 (hyphen one) -R(hyphen R) test*(test asterix)'''

|-
|01:53
|But we will do it using a '''for loop'''.

|-
| 01:58
| Note that the name of our''' Bash script''' is''' nested-(Hyphen)for dot sh'''

|-
|02:05
| This is our''' shebang line'''.

|-
|02:08
| This is the outer '''for loop'''.

|-
|02:10
|This '''for loop''' will check for directories starting with the name '''test'''.

|-
|02:15
|First '''echo''' line will display the sub-directories name

|-
|02:21
|The second '''echo''' line will create a blank line.

|-
| 02:25
| This is the inner '''for loop'''.It will check for files present within the directories.

|-
|02:32
|'''ls '''displays the directory content.

|-
|02:36
|'''-1 (hyphen one)''' is used to list one file per line.

|-
| 02:41
| Here we list the files.'''done''' ends the inner '''for loop'''.

|-
|02:45
|This command prints a vertical line after completion of every cycle of outer '''for-loop.'''

|-
|02:53
|'''done''' ends the outer '''for loop'''.

|-
| 02:57
| Let us execute the program.

|-
|02:58
|Open the '''terminal''' by pressing '''ctrl+alt+t''' keys simultaneously on your keyboard.

|-
|03:08
|Now, let us go to the directory where our '''Bash script''' is.

|-
|03:13
|It is on the '''Desktop'''.

|-
|03:15
|Type '''cd Desktop'''Let us go in the folder '''simple-(Hyphen)nested-(Hyphen)for'''

|-
|03:22
|Press '''Enter.'''

|-
| 03:24
| Type '''chmod plus +x nested-(Hyphen)for dot sh'''

|-
|03:32
|Press '''Enter.'''

|-
|03:34
|Type dot slash '''nested-(Hyphen)for dot sh'''

|-
|03:39
|Press '''Enter.'''

|-
|03:40
|The output is displayed. It shows Files in '''test''' directory. Files in '''test2''' directory.And files in '''test3''' directory.

|-
|03:52
|This brings us to the end of this tutorial.

|-
|03:56
|Let us summarize.In this tutorial we learnt,'''Nested for loop'''

|-
| 04:02
| As an assignment

|-
|04:04
|Retype '''nested (hyphen)-for dot sh bash script using nested while loop.'''

|-
|04:11
|Save your program with the name ''''nested-(hyphen)while Dot sh''''

|-
| 04:17
| Watch the video available at the link shown below.It summarises the Spoken Tutorial project

|-
| 04:23
|If you do not have good bandwidth, you can download and watch it

|-
| 04:28
| The Spoken Tutorial Project Team Conducts workshops using spoken tutorials Gives certificates to those who pass an online test

|-
| 04:37
|For more details, please write to contact@spoken-tutorial.org

|-
| 04:45
| Spoken Tutorial Project is a part of the Talk to a Teacher project It is supported by the National Mission on Education through ICT, MHRD, Government of India

|-
| 04:57
|More information on this Mission is available at: http://spoken-tutorial.org\NMEICT-Intro

|-
| 05:03
| The script has been contributed by FOSSEE and Spoken-tutorial team.

|-
| 05:08
|This is Ashwini Patil from IIT Bombay.Thank You for joining.

|}

@@ Line 137: / Line 137: @@
 |-
 | 02:57
-| Let us '''execute''' the program.
+| Let us '''execute''' the program.Open the '''terminal''' by pressing '''ctrl+alt+t''' keys simultaneously on your keyboard.
-−
-|-
-|02:58
-|Open the '''terminal''' by pressing '''ctrl+alt+t''' keys simultaneously on your keyboard.
 |-
@@ Line 173: / Line 169: @@
 |-
 |03:39
-|Press '''Enter.'''
+|Press '''Enter.'''The '''output''' is displayed. It shows  files in '''test''' directory, files in '''test2''' directory and files in '''test3''' directory.
-−
-|-
-|03:40
-|The '''output''' is displayed. It shows  files in '''test''' directory, files in '''test2''' directory and files in '''test3''' directory.
 |-
@@ Line 210: / Line 202: @@
 | 04:28
 | The Spoken Tutorial Project team:
-* Conducts workshops using spoken tutorials.
+Conducts workshops using spoken tutorials.
-* Gives certificates to those who pass an online test.
+Gives certificates to those who pass an online test.
 |-

@@ Line 185: / Line 185: @@
 |-
 |04:04
-|* Retype: '''nested (hyphen)-for dot sh''' bash script using '''nested while loop.'''
+|Retype: '''nested (hyphen)-for dot sh''' bash script using '''nested while loop.'''
 |-
 |04:11
-|* Save your program with the name''' 'nested-(hyphen)while dot sh'.'''
+|Save your program with the name''' 'nested-(hyphen)while dot sh'.'''
 |-

@@ Line 65: / Line 65: @@
 |-
 | 01:24
-| We have sub-directories '''test''', '''test2''', '''test3''' and a '''Bash script'''.
+| We have sub-directories '''"test"''', '''"test2"''', '''"test3"''' and a '''Bash script'''.
 |-
@@ Line 81: / Line 81: @@
 |-
 |01:45
-|Please note that the same can be achieved with a '''single line command''' '''ls -1 (hyphen one) -R(hyphen R) test*(test asterix)'''.
+|Please note that the same can be achieved with a '''single line command''' '''ls -1 (hyphen one) -R(hyphen R) test*'''(test asterisk).
 |-
@@ Line 89: / Line 89: @@
 |-
 | 01:58
-| Note that the name of our''' Bash script''' is''' nested-(Hyphen)for dot sh'''.
+| Note that the name of our''' Bash script''' is''' nested-(hyphen)for dot sh'''.
 |-
@@ Line 101: / Line 101: @@
 |-
 |02:10
-|This '''for loop''' will check for '''directories''' starting with the name '''test'''.
+|This '''for loop''' will check for directories starting with the name '''test'''.
 |-
@@ Line 113: / Line 113: @@
 |-
 | 02:25
-| This is the inner '''for loop'''. It will check for files present within the directories.
+| This is the inner '''for loop'''. It will check for the files present within the directories.
 |-
 |02:32
-|'''ls '''displays the directory content.
+|'''"ls" '''displays the directory content.
 |-
@@ Line 129: / Line 129: @@
 |-
 |02:45
-|This '''command''' prints a vertical line after completion of every cycle of outer '''for-loop.'''
+|This '''command''' prints a horizontal line after completion of every cycle of outer '''for-loop.'''
 |-
@@ Line 153: / Line 153: @@
 |-
 |03:15
-|Type: '''cd Desktop'''. Let us go in the '''folder''' '''simple-(Hyphen)nested-(Hyphen)for'''.
+|Type: '''cd Desktop'''. Let us go in the '''folder''' '''simple-(Hyphen)nested-(Hyphen)for'''
 |-
@@ Line 181: / Line 181: @@
 |-
 |03:52
-|This brings us to the end of this '''tutorial'''.
+|This brings us to the end of this tutorial.
 |-
 |03:56
-|Let us summarize. In this tutorial we learned '''Nested for loop'''.
+|Let us summarize. In this tutorial, we learned '''Nested for loop'''.
 |-
@@ Line 193: / Line 193: @@
 |-
 |04:04
-|* Retype: '''nested (hyphen)-for dot sh bash script using nested while loop.'''
+|* Retype: '''nested (hyphen)-for dot sh''' bash script using '''nested while loop.'''
 |-
 |04:11
-|* Save your program with the name ''''nested-(hyphen)while Dot sh''''.
+|* Save your program with the name''' 'nested-(hyphen)while dot sh'.'''
 |-
@@ Line 223: / Line 223: @@
 |-
 | 04:57
-|More information on this mission is available at: http://spoken-tutorial.org\NMEICT-Intro
+|More information on this mission is available at: http://spoken-tutorial.org/NMEICT-Intro
 |-
 | 05:03
-| The script has been contributed by FOSSEE and Spoken-tutorial team.
+| The script has been contributed by FOSSEE and Spoken-tutorial teams.
 |-

@@ Line 153: / Line 153: @@
 |-
 |03:15
-|Type '''cd Desktop'''Let us go in the folder '''simple-(Hyphen)nested-(Hyphen)for'''
+|Type '''cd Desktop'''. Let us go in the folder '''simple-(Hyphen)nested-(Hyphen)for'''
 |-