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Hi. I have some questions about using sed. I cannot use the hold buffer. For example i want to put first line to the buffer than take second line and append the buffer to the second line.then 3th to...

Thank you very much!.. The code is working properly:)

i wrote this code..

#!/bin/sh
sum=0
for i in `cat numbers.txt |cut -f1`
do
sum=expr $sum + $i
done
echo $sum


I want to read the numbers in the file numbers.txt. and find sum of them....

But i need some help, where can i find any help for those scripts. I will write myself.

ok.. sorry.

Hi.. I am a beginner in the shell programming. And I have a homework about it. I will be very happy if someone can help me.
those are the questions:
1- Write a shell script which finds the sum of...