Shell Programming and Scripting

Hi guys,

I want to input some variables from a file.
I tried it with following script,

for i in 1 2 3 4
do
read varible1 varible2 < ddd.txt

echo $varible1 $varible2

done


ddd.txt file content as follows,


1 100
2 200
3 300
4 400

But problem is, it only take the two variables form the first line. I want to take all the variable and to print it .


Can some body tell me how can I change my scrip to take all varables.


Regards,
Mahesh Fernando.

Code:

while read variable_1 variable_2; do
  echo ${variable_1} ${variable_2}
done < input_file