Aim : Write a shell script to find prime numbers up to a given number
#!/bin/bash echo "Enter a limit" read limit echo "prime numbers upto $limit are :" echo "1" i=2 while [ $i -le $limit ] do flag=1 j=2 while [ $j -lt $i ] do rem=$(( $i % $j )) if [ $rem -eq 0 ] then flag=0 break fi j=$(( $j+1 )) done if [ $flag -eq 1 ] then echo "$i" fi i=$(( $i+1 )) done