SHELL PROGRAMS

THE SUM OF 'n' DIFFERENT NUMBERS

echo"Enter the number of elements:"

read n

s=0

for((i=1;i<=n;i++))

do 

echo"Enter the number: "

read no 

s='expr $s+$no'

done

echo"This sum is :$s"

REVERSE OF A GIVEN NUMBER 

if  [ $# -eq 1 ]

then 

if [ $1 -gt 0 ]

then 

num=$1

sumi=0

while [ $num -ne 0 ]

do 

lnum='expr $num % 10'

sumi='expr $num * 10  + $lnum '

num='expr $num / 10'

done

echo"Reverse of digits is $sumi of $1 "else

echo"Number is less than  0"

fi

else

echo"Insert only one parameter "

fi