bash program

#!/bin/bash

num1=1
num2=10
if [ $num1 -gt $num2 ]; then
               echo "number  one is greather  "
else
         echo "number two is greater"
fi


@for comapre  number
...................................
#!/bin/bash

num1=1
num2=10
if [ $num1 -eq $num2 ]; then
               echo "number  is equel  "
else
         echo "not equel"
fi

@for check odd or even number
......................
#!/bin/bash

echo -n "please enter a number"
read n
check=$(($n % 2))
if [ $check -eq 0 ];then
echo "$n is an even number"
else
echo "$n is an odd number"
fi;
-------------------------------
@for string comparisom


#!/bin/bash

num1="jahid"
num2="arif"
if [ $num1 = $num2 ]; then
               echo "name is equal  "
else
         echo "not equal"
fi
-----------------------
@FOR counting

#!/bin/bash

COUNT=6
while [ $COUNT -gt 0 ]; do
echo value of count is: $COUNT
let COUNT=COUNT-1
done
----------------
@ for reverse
#!/bin/bash

COUNT=1
while [ $COUNT -lt 7 ]; do
echo value of count is: $COUNT
let COUNT=COUNT+1
done

-----------------------
#!/bin/bash

COUNT=0
until [ $COUNT -gt 5 ]; do
echo value of count is: $COUNT
let COUNT=COUNT+1
done
@ addition

echo '#### let ###'
let addition=3+5
echo "3+5 =" $addition

@subtraction

echo '#### let ###'
let subtraction=5-3
echo $subtraction


@power of
echo '#### let ###'
let poweroftwo=2**2
echo "2^ 2=" $poweroftwo

@mathmatatics

echo 2^8 =$[ 2** 8 ]