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#!/bin/bash #Script to find armstrong number till 500, you can change it i=1 while((i<=500)) do c=$i d=$i b=0 a=0 #checking each number while((c>0)) do #separating each digit a=$((c%10)) #finding cube of each digit and adding them b=$((b + a*a*a)) c=$((c/10)) done if((b==d)); then echo "$i" fi i=$((i+1)) done
#!/bin/bash read -p "Enter first number :" first read -p "Enter second number:" sec echo "" echo -e "Number before swapping is $first and $sec \n" #swapping logic first=$((first*sec)) sec=$((first/sec)) first=$((first/sec)) echo -e "Number after swapping is $first and $sec \n"
#!/bin/bash
echo "enter size of an array"
read n
#taking input from user
for((i=0;i<n;i++))
do
echo " enter $((i+1)) number"
read nos[$i]
done
#printing the entered number
echo "number entered are"
for((i=0;i<n;i++))
do
echo ${nos[$i]}
done
#main loop
small=${nos[0]}
greatest=${nos[0]}
for((i=0;i<n;i++))
do
#logic for smallest number
if [ ${nos[$i]} -lt $small ]; then
small=${nos[$i]}
#logic for greatest number
elif [ ${nos[$i]} -gt $greatest ]; then
greatest=${nos[$i]}
fi
done
#printing smallest and greatest number
echo "smallest number in an array is $small"
echo "greatest number in an array is $greatest"
#!/bin/bash
#function to add two numbers
add()
{
x=$1
y=$2
echo -e "Number entered by u are: $x and $y"
echo "sum of $1 and $2 is `expr $x + $y` "
}
# main script
echo "enter first number"
read first
echo "enter second number"
read sec
#calling function
add $first $sec
echo "end of the script"
#!/bin/bash
for((i=0;i<5;i++))
do
echo "enter `expr $i + 1` number"
read arr[$i]
done
echo "the numbers you hav entered are"
for((i=0;i<5;i++))
do
echo ${arr[$i]}
done
#!/bin/bash if [ $# -ne 2 ] ; then echo -e " please provide correct number of arguments" else # $1 is first argument and $2 is second . echo " sum of $1 + $2 is `expr $1 + $2` " fi
#!/bin/bash echo "enter first number" read first echo "enter second number" read sec echo "enter third number" read third if [ $first -gt $sec ] ; then if [ $first -gt $third ] ; then echo -e " $first is greatest number " else echo -e " $third is greatest number " fi else if [ $sec -gt $third ] ; then echo -e " $sec is greatest number " else echo -e " $third is greatest number " fi fi
#!/bin/bash echo -e "enter year " read year #if year is less than or equal to 0 then current year is assigned to year variable if [ $year -le 0 ] ; then year=`date | cut -d " " -f6` fi if [ `expr $year % 400` -eq 0 ]; then echo "$year is a Leap year" elif [ `expr $year % 100` -eq 0 ]; then echo "$year is not a Leap year" elif [ `expr $year % 4 ` -eq 0 ]; then echo "$year is not a Leap year" else echo "$year is not a leap year" fi
#!/bin/bash echo -e "enter the number" read n sum=0 a=$n while(($n >0)) do x=`expr $n % 10` sum=`expr $sum + $x` n=`expr $n / 10` done echo "the sum of $a is $sum"
#!/bin/bash fact=1 #taking input from user echo -e "enter a number" read n #if enter value less than 0 if [ $n -le 0 ] ; then echo "invalid number" exit fi #factorial logic if [ $n -gt 0 ] ; then for((i=$n;i>=1;i--)) do fact=`expr $fact \* $i` done fi echo "The factorial of $n is $fact"
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