Search
Question:
How to take a whole line as argument In bash script?

In a Bash script, you can take a whole line as an argument by using the special variable space “ , “ and you can set the default seperator to “ \n ” with IFS=$'\n' when you want do seperate by line.

Let suppose you have a file ‘zz’

wire [3:0] dcs_ctrl


And you wnat to print this file like this

wire [3:0] dcs_ctrl0

wire [3:0] dcs_ctrl1

wire [3:0] dcs_ctrl2

wire [3:0] dcs_ctrl3


For this, you have to do the operation for the whole line manually (like print the whole line 4 times as following).

for i in `cat zz`; do for j in {0..3}; do echo "$i"; done; done


However, using the default seperator in bash is space  , and you can set the default seperator to \n with IFS=$'\n', you can separately do it using the below code

$ cat zz

wire [3:0] dcs_ctrl


$ IFS=$'\n'; for i in `cat zz`; do for j in {0..3}; do echo "$i"; done; done

wire [3:0] dcs_ctrl

wire [3:0] dcs_ctrl

wire [3:0] dcs_ctrl

wire [3:0] dcs_ctrl


Answered by: >LF-DevJourney

Credit:> StackOverflow


Suggested blogs:

>How to do wild grouping of friends in Python?

>How to download an entire S3 bucket - Complete Guide

>How to get item details of Woo Commerce in custom email content?

>How to install Laravel using composer and configure?

>How to merge cells with HTML, CSS, and PHP?

>How to Migrate your apps to Android 13

>How to Read a csv file with php using cURL

>How to read frame from ffmpeg subprocess in Python?


Submit
0 Answers
Top Questions
10-01-2024

How to display the list of items corectly and add a scrolling text slider?

16-01-2024

How to include spaces between text to enter the consecutive text in next line in javascript?

19-02-2024

Understanding types of ‘syntax error’ in javascript

16-01-2024

How to take a whole line as argument In bash script?

10-01-2024

Process to narrow down a union return type from a function in Javascript

Related Questions

Setup checkbox for multiple switch on change event of Javascript
img
How to take a whole line as argument In bash script?
img
How to display the list of items corectly and add a scrolling text slider?
img
What is the equivalent export format for conditional static required in ES6?
img
How to Filter all item with lowest nearest value in array using javascript?
img