Answer to Question #292724 in UNIX/Linux Programming for Lavu

Question

Write a shell script using Nested for loops of your own and explain each statement of that script. Explanation

Answer 1

#!/bin/bash
# A shell script to print each number five times.
for (( i = 1; i <= 5; i++ ))      ### Outer for loop ###
do 
   for (( j = 1 ; j <= 5; j++ )) ### Inner for loop ###   
 do     
     echo -n "$i "   
 done  echo "" #### print the new line ###
done
Explanation
For each value of i the inner loop is cycled through 5 times, with the variable j taking values from 1 to 5. The inner for loop terminates when the value of j exceeds 5, and the outer loop terminates when the value of i exceeds 5.