Shell program for the prime number

[Rup_me]

Hello Guys,

I have to write the shell one program. The program code should check if the given number is prime or not. I know the java programming, but it's different than Shell programming.
Please provide me shell programming code for the prime number. Your help will be greatly appreciated.

[Praetor]

Hi , below is the shell programming code of the prime number. Please review that carefully:

echo "Enter number"
read a
q=2
p=$a

until [ $q == $a ]
do

if [ `expr $a % $J` == 0]
echo "Given number is not prime number"
exit

else
q=`expr $q+ 1`

done
echo "Given number is prime number"

[Katty]

Hi friend,
You need implement the below code logic into your shell programming. Use simple if loop concept for this. I have used "cnt" variable in the below program code:

int count = 0
for x = 1 to num,// "num" is the number for which we have to check the prime number

if num % x = 0
cnt=cnt+1

if cnt <=2, then
print => Prime Number

[kelfro]

Did you try below shell programming code for prime number? If not then try it on your system. The program will let you know if number is prime number or not prime number.

l=2
rm=1

echo -e "provide a number: \c"
read nm

while [ $i -le `expr $nm / 2` -a $rem -ne 0 ]; do
rm=`expr $nm % $i`
l=`expr $l + 1`
done

if [ $rem -ne 0 ]; then
echo -e "$provided number is prime\n"

if [ $nm -lt 2 ]; then
echo -e "$provided number is not prime\n"

[Zecho]

Hello,
In your program you need to use "if [ `expression $z % $x` == 0]" this conditional statement. In this statement the "z" is the user defined number. While the "x" is the number which varies from zero to the given number. At the time of the execution, this conditional statement check if the given number is divided by any number. If it is divided by any number then it must be prime number.

[Reegan]

Hi,
You should include the nested for loop in you prime shell program. Use two "for loops". First is for the incrementation of the 0 - number and another for loop to check the prime number condition.

for ( a=$Numr+1; a <= $Mn-1; a++ )

for (( b=2; b <= $a-1; b++ ))

if [ `$a % $b` = 0 ]

echo" Prime number"