In Linux, how can I extract a particular line from a text file and put it into a variable?

Question

Say I have a text file and I need to put a particular line as a variable in a script. What is the command that would do so? Thanks.

Answer 1

use sed



#!/bin/sh

vara=`sed -n "10 p" index.html`

Answer 2

Depends what you mean by "a particular line". If you want a number, say the 10th line, then use 'sed' as Pete suggests. If you want a line that matches a certain pattern, use grep. You can also use awk.



LN=`grep pattern filename`



or



LN=`grep pattern filename | head -1`

to just get the first one



or



LN=`awk '$1 == "pattern" ' '{print $2}' filename`

if you only want the second field of the line



There's lots of ways to do it.

Answer 3

in case you have the PDF Reader, you are able to extract the text cloth and photos in maximum situations (some information do no longer enable it.) yet to no longer reinsert it or create a PDF. some HP printer application, does assist you to Print to a PDF. decide on output as PDF quite of a printer. It saves in My information folder. you additionally can print off the rfile and then test it back in utilising an OCR software (maximum Scanners comprise a elementary version.)