Difference between revisions of "BOSS-Linux/C3/More-on-sed-command/English-timed"

|  In this tutorial, we will learn some more on ''''sed' command'''s through some examples.

|  To record this tutorial, I am using:

|* '''Linux''' ''' Operating System''' and

|* '''GNU BASH''' version 4.2.24

| you should know basics of '''Linux terminal.'''

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

|  Let's first look at the original file '''seddemo.txt'''.

| If you want to replace all occurrences of '''‘Kumar’''' with '''‘Roy’''',

|type on the '''terminal''':

| '''sed space''' within single quote ''''s front slash / opening square bracket small ''k'' capital ''K''  closing square bracket umar  slash Roy slash'''' after the single quotes space '''seddemo.txt'''.

| Type:  '''sed space within single quotes 's front slash opening square bracket ''small k'' ''capital K'' closing square bracket umar slash Roy slash g'''' after the single quote space '''seddemo.txt''' press '''Enter'''.

| Say, we want to replace the words "electronics" with the word "electrical"

| and "civil" with "metallurgy" in the file '''seddemo.txt'''.

|Let me clear the '''prompt'''.

|  Type:  '''sed space  hyphen e space within single quotes s front slash electronics slash electrical slash g''' after the single quote '''space hyphen e space within single quotes  s front slash civil slash metallurgy slash g''' after the single quotes space '''seddemo.txt'''

|  Now we want to change the '''stream''' of "Anirban" from "computers" to "mathematics".

| In such case, we would need to type:

| First we write '''sed''', then in single quotes we write the pattern to be matched.

| This is 'Anirban'.

| Then we mention the pattern to be replaced which is 'computers'.

| Then the new word that would be substituted, which is 'mathematics'.

| Say, we want to select those lines which do not have '''stream''' as "electronics".

| and press '''Enter.'''

|  So, in that case, we would write  '''sed space''' in single quotes '''1i space Student Information slash n 2013'''' after the quotes '''seddemo.txt'''  

| Press '''Enter'''.

| '''slash n '''prints 2013 in the next line after ‘Student Information’.

|  Let us summarize.

| In this tutorial, we learnt:

|* Substitution  

|* Replacement and

|*  Insertion.

|  As an assignment, use the same text file '''seddemo.txt'''

| and try to replace or substitute name '''Ankit''' with '''Ashish'''.

|  Watch the video available at the link shown below.

http://spoken-tutorial.org/What_is_a_Spoken Tutorial     

| It summarizes the Spoken Tutorial project.

| If you do not have good bandwidth, you can download and watch it.

|  The Spoken Tutorial Project Team: Conducts workshops using spoken tutorials.

| Gives certificates to those who pass an online test.

|  '''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.

| More information on this mission is available at the link shown below: http://spoken-tutorial.org\NMEICT-Intro

|This is Ashwini PAtil from IIT bombay, signing off.