Dividing content of one file by content of another

larspend · 04-12-2011, 01:29 AM

If you have the value 100 in File1 and the value 5 in File2, how do you write a script to divide the 100 in File1 by the 5 in File2 in Linux Bash Shell?

The operating system I am using is Ubuntu 10 and object is to write a script to accomplish this task.

grail · 04-12-2011, 02:33 AM

What have you tried? Maybe have a look here and see how you go.

brownie_cookie · 04-12-2011, 02:44 AM

maybe with a grep (to get the contect of the files) and then dividing them?

Code:

var1=`grep filename1.txt`
var2=`grep filename2.txt`

result=$var1 / $var2

echo $result

something like that?

colucix · 04-12-2011, 02:49 AM

Per the LQ Rules, please do not post homework assignments verbatim. We're happy to assist if you have specific questions or have hit a stumbling point, however. Let us know what you've already tried and what references you have used (including class notes, books, and Google searches) and we'll do our best to help. Also, keep in mind that your instructor might also be an LQ member.

In addition you may even try the suggested solution, but you will get an error. Can you explain why?

abhinav4 · 04-12-2011, 03:00 AM

I will give a hint here

To assign a value to a variable we use variablename=value or variablename="Text value"
But to assign a value to a variable from a file its a little bit twisted, we need to use $.

I dont know why? but that worked for me

chrism01 · 04-12-2011, 08:00 PM

@OP: You'll need these
http://rute.2038bug.com/index.html.gz
http://tldp.org/LDP/Bash-Beginners-G...tml/index.html
http://www.tldp.org/LDP/abs/html/