list of shell programschettinadtech.ac.in/storage/13-04-26/13-04-26-14-20-12...2 27 shell program to...
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1
List of Shell Programs
S.No List of Programs
1 Shell Program to Swap Two Numbers
2 Shell Program to Add Two Numbers
3 Shell Program to Find the Biggest of Two Numbers
4 Shell program to Find the Biggest of Three Numbers
5 Shell Program to Find the Area and Circumference of a Circle
6 Shell Program to Find the whether the given Number is Positive,
Negative and Zero
7 Shell Program to Find the whether the given Number is Even or
Odd
8 Shell Program to Find the whether the given Year is Leap Year or
Not
9 Shell Program to Convert Fahrenheit to Celsius and Celsius to Fahrenheit
10 Shell Program to Find the Quotient and Remainder of two Numbers
11 Shell Program to check whether a number is divisible by 5
12 Shell Program to find the sum and average of four integers
13 Shell Program to compute simple interest and compound interest
14 Shell Program to calculate the sum of digits(without using loop)
15 Shell Program to Print the first “N” Odd Number
16 Shell Program to Print the first “N” Even Number
17 Shell Program to Find the Factorial of a given Number
18 Shell Program to Find the Factorial of a given “N” Number
19 Shell Program to find the GCD of numbers
20 Shell Program to Compute Power of X
21 Shell Program to Find whether the given Number is Prime or Not
22 Shell Program to Find the First “N” Prime Number
23 Shell Program to Find whether the given Number is Armstrong Number or Not
24 Shell Program to reverse the digits of a number
25 Shell Program to find the sum of the digits of a given number
26 Shell Program to execute various UNIX commands using Case
Statements
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27 Shell Program to count the number of vowels in a line of text
28 Shell Program to find the sum of odd digits and even digits from a number
29 Shell Program to find the smallest and largest number from a set
of number
30 Shell Program to check the given number and its reverse are
same
31 Shell Program to generate Fibonacci Series
32 Shell Program to find the sum of square of Individual Digits
33 Shell Program to find the sum of cube of Individual digits of a
given Numbers
34 Shell Program to find the Smallest and Largest digits of a
numbers
35 Shell Program to compute Gross Salary of an Employee
36 Shell Program to find the degree of x in a Quadratic Equation
37 Shell Program to display the digits which are in Odd Position in a given Number
38 Shell Program to check the given string is palindrome or not
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1. Write a Shell Program to Swap Two Numbers
ccetstudent@EMCA:~$ cat>swap.sh
echo "Enter value for X:" read x
echo "Enter value for Y:" read y
echo "Before swap, x=$x and y=$y" z=$x
x=$y y=$z
echo "After swap, x=$x and y=$y"
ccetstudent@EMCA:~$ sh swap.sh
Enter value for X: 10
Enter value for Y: 20
Before swap, x=10 and y=20 After swap, x=20 and y=10
ccetstudent@EMCA:~$
2. Write a Shell Program for Addition of Two Numbers echo "Addition of Two numbers" echo "Enter two numbers"
read a read b
c=`expr $a + $b ` echo "$c"
Output
ccetstudent@EMCA:~$ sh add.sh
Addition of Two numbers
Enter two numbers 3
4 7
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3. Write a Shell Program to find the Biggest of Two Numbers #compare two numbers
echo "Enter the two numbers" read a
read b
if test $a -gt $b then
echo "a is big" else
echo "b is big" fi
4. Write a Shell program to find the Biggest of Three Numbers #compare three numbers echo "Enter the three numbers"
read a
read b read c
if test $a -gt $b -a $a -gt $c then
echo "a is big" elif test $b -gt $c
then echo "b is big"
else echo "c is big"
fi
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5
5. Write a Shell Program to Find the Area & Circumference of a Circle ccetstudent@EMCA:~$ cat>area.sh
#Area and Circumference of a Circle echo "Enter the Radius"
read radius arear=`echo 3.14 \* $radius \* $radius |bc`
circu=`echo 2\* 3.14 \* $radius |bc` echo "Area of the Circle="$arear
echo "Circumference of the Circle="$circu
ccetstudent@EMCA:~$ sh area.sh Enter the Radius
10
Area of the Circle=314.00 Circumference of the Circle=62.80
ccetstudent@EMCA:~$
6. Write a Shell Program to Find the whether the given Number is Positive, Negative & Zero
ccetstudent@EMCA:~$ cat>check.sh echo "Enter the Number"
read x if test $x -gt 0
then echo "The given Number is Positive="$x
elif test $x -eq 0
then echo "The given Number is Zero="$x
else echo "The given Number is Negative="$x
fi
ccetstudent@EMCA:~$ sh check.sh Enter the Number
10 The given Number is Positive=10
ccetstudent@EMCA:~$ sh check.sh
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6
Enter the Number
-10 The given Number is Negative=-10
ccetstudent@EMCA:~$ sh check.sh Enter the Number
0 The given Number is Zero=0
7. Write a Shell Program to Find the whether the given
Number is Even or Odd ccetstudent@EMCA:~$ cat>odd.sh echo "Enter the Number to Check"
read n if test `expr $n % 2` -eq 0
then echo "The given Number is Even="$n
else echo "The given Number is Odd="$n
fi
ccetstudent@EMCA:~$ sh odd.sh
Enter the Number to Check 10
The given Number is Even=10 ccetstudent@EMCA:~$ sh odd.sh
Enter the Number to Check 33
The given Number is Odd=33
8. Write a Shell Program to Find the whether the given Year is Leap year or Not
ccetstudent@EMCA:~$ cat>leap.sh
echo "Enter the Year to Check" read leap
if test `expr $leap % 4` -eq 0
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7
then
echo "The given Year is Leap="$leap else
echo "The given Year is Not Leap="$leap fi
ccetstudent@EMCA:~$ sh leap.sh
Enter the Year to Check 1994
The given Year is Not Leap=1994 ccetstudent@EMCA:~$ sh leap.sh
Enter the Year to Check 1996
The given Year is Leap=1996
9. Write a Shell Program to Convert Fahrenheit to Celsius and Celsius to Fahrenheit echo "*** Converting between the different temperature scales ***"
echo "1. Convert Celsius temperature into Fahrenheit" echo "2. Convert Fahrenheit temperatures into Celsius"
echo -n "Select your choice (1-2) : " read choice
if [ $choice -eq 1 ]
then echo -n "Enter temperature (C) : "
read tc
# formula Tf=(9/5)*Tc+32 tf=$(echo "scale=2;((9/5) * $tc) + 32" |bc)
echo "$tc C = $tf F"
elif [ $choice -eq 2 ] then
echo -n "Enter temperature (F) : " read tf
# formula Tc=(5/9)*(Tf-32) tc=$(echo "scale=2;(5/9)*($tf-32)"|bc)
echo "$tf = $tc"
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8
else
echo "Please select 1 or 2 only" exit 1
fi
Output *** Converting between the different temperature scales ***
1. Convert Celsius temperature into Fahrenheit 2. Convert Fahrenheit temperatures into Celsius
Select your choice (1-2) : 1 Enter temperature (C) : 32
32 C = 89.60 F
10. Write a Shell Program to find the Quotient and Remainder of two Numbers
ccetstudent@EMCA:~$ cat>rem.sh
echo "Enter the Value of Divisor" read a
echo "Enter the Value of Divident" read b
quo=`echo $a\/$b |bc` rem=`echo $a\%$b |bc`
echo "Quotient = "$quo echo "Remainder = "$rem
ccetstudent@EMCA:~$ sh rem.sh
Enter the Value of Divisor 10
Enter the Value of Divident
3 Quotient = 3
Remainder = 1
11. Write a shell program to check whether a number is divisible by 5
ccetstudent@EMCA:~$ cat>div5.sh
echo "Enter the Number to Check" read number
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9
if test `expr $number % 5` -eq 0
then echo "The give Number is Divisible by 5"
else echo "The given Number is Not Divisible by 5"
fi
ccetstudent@EMCA:~$ sh div5.sh Enter the Number to Check
4 The given Number is Not Divisible by 5
ccetstudent@EMCA:~$ sh div5.sh Enter the Number to Check
5 The give Number is Divisible by 5
12. Write a shell program to find the sum and average of four integers
echo "Enter 4 Numbers to Find Sum and Average" echo "Enter the 1st Number"
read no1 echo "Enter the 2nd Number"
read no2 echo "Enter the 3rd Number"
read no3 echo "Enter the 4th Number"
read no4
sum=`expr $no1 + $no2 + $no3 + $no4` avg=`expr $sum / 4`
echo "Sum of 4 Numbers= "$sum echo "Average of 4 Numbers= "$avg
ccetstudent@EMCA:~$ sh avg.sh
Enter 4 Numbers to Find Sum and Average Enter the 1st Number
10 Enter the 2nd Number
20 Enter the 3rd Number
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1 0
30
Enter the 4th Number 40
Sum of 4 Numbers= 100 Average of 4 Numbers= 25
13. Write a shell program to compute simple interest and compound interest
echo "Enter the Principal Amount"
read p echo "Enter the Rate of Interest"
read r
echo "Enter the Number of Years" read n
si=`expr $p \* $r \* $n` si=`expr $si / 100`
echo "The Simple Interest is: Rs $si" co=`expr 100 + $r`
co=`expr $co / 100` i=2
ci=1 while [ $i -le $n ]
do ci=`expr $ci \* $co`
i=`expr $i + 1` done
ci=`expr $ci \* $p`
echo "The Compound Interest is: Rs $ci"
ccetstudent@EMCA:~$ sh simp.sh Enter the Principal Amount
5000 Enter the Rate of Interest
10 Enter the Number of Years
1 The Simple Interest is: Rs 500
The Compound Interest is: Rs 5000 ccetstudent@EMCA:~$ sh simp.sh
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1 1
Enter the Principal Amount
5000 Enter the Rate of Interest
10 Enter the Number of Years
2 The Simple Interest is: Rs 1000
The Compound Interest is: Rs 5000
14. Write a Shell Program to calculate the sum of digits (without using loop) echo "Enter 5 Digit Number"
read num
d1=`expr $num % 10` num=`expr $num / 10`
d2=`expr $num % 10` num=`expr $num / 10`
d3=`expr $num % 10` num=`expr $num / 10`
d4=`expr $num % 10` num=`expr $num / 10`
d5=`expr $num % 10` sum=`expr $d1 + $d2 + $d3 + $d4 + $d5`
echo "Sum of 5 Digit Number="$sum ccetstudent@EMCA:~$ sh sum1.sh
Enter 5 Digit Number 12345
Sum of 5 Digit Number=15
15. Write a Shell Program to print the first “N” Odd Number echo "To Print the First N Odd Numbers"
echo "Enter the Number" read n
i=1 j=1
while [ $j -le $n ]
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1 2
do
echo $i i=`expr $i + 2`
j=`expr $j + 1` done
ccetstudent@EMCA:~$ sh genodd.sh
To Print the First N Odd Numbers Enter the Number
5 1
3 5
7 9
16. Write a Shell Program to print the first “N” Even Number
echo "To Print the First N Even Numbers" echo "Enter the Number"
read n i=2
j=1 while [ $j -le $n ]
do echo $i
i=`expr $i + 2` j=`expr $j + 1`
done
ccetstudent@EMCA:~$ sh geneven.sh
To Print the First N Even Numbers Enter the Number
5 2
4 6
8 10
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1 3
17. Write a Shell Program to Find the Factorial for a given Number echo "Enter a number: "
read num i=2
res=1 if [ $num -ge 2 ]
then while [ $i -le $num ]
do res=`expr $res \* $i`
i=`expr $i + 1` done
fi
echo "Factorial of $num = $res"
Output ccetstudent@EMCA:~$ sh fact.sh
Enter a number: 4
Factorial of 4 = 24
18. Write a Shell Program to Find the Factorial for a given “N” Number
echo "Enter the Number" read num
i=1
j=1 res=1
if test $j -eq 1 then
echo "The Factorial for the $j Number is="$j j=`expr $j + 1 `
fi while [ $j -le $num ]
do while [ $i -le $j ]
do res=`expr $res \* $i `
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1 4
i=`expr $i + 1 `
done echo "The Factorial for the $j Number is="$res
res=1 i=1
j=`expr $j + 1 ` done
ccetstudent@EMCA:~$ sh fact.sh
Enter the Number 4
The Factorial for the 1 Number is=1 The Factorial for the 2 Number is=2
The Factorial for the 3 Number is=6 The Factorial for the 4 Number is=24
ccetstudent@EMCA:~$ sh fact.sh
Enter the Number 6
The Factorial for the 1 Number is=1 The Factorial for the 2 Number is=2
The Factorial for the 3 Number is=6 The Factorial for the 4 Number is=24
The Factorial for the 5 Number is=120 The Factorial for the 6 Number is=720
19. Write a Shell Program to compute the GCD for a Number
echo Enter two numbers with space in between
read a b
m=$a
if [ $b -lt $m ]
then
m=$b
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1 5
fi
while [ $m -ne 0 ]
do
x=`expr $a % $m`
y=`expr $b % $m`
if [ $x -eq 0 -a $y -eq 0 ]
then
echo gcd of $a and $b is $m
break
fi
m=`expr $m - 1`
done
ccetstudent@EMCA:~$ sh gcd.sh
Enter two numbers with space in between
20 30
gcd of 20 and 30 is 10
20. Write a Shell Program to compute Power of x
echo "Input number"
read no echo "Input power"
read power counter=0
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1 6
ans=1
while [ $power -ne $counter ] do
ans=`expr $ans \* $no` counter=`expr $counter + 1`
done echo "$no power of $power is $ans"
Output
Input number
3 Input power
4 3 power of 4 is 81
21. Write a Shell Program to Find the given Number is Prime or Not
i=2 rem=1
echo -e "Enter a number: \c" read num
if [ $num -lt 2 ]; then echo -e "$num is not prime\n"
exit 0 fi
while [ $i -le `expr $num / 2` -a $rem -ne 0 ]; do rem=`expr $num % $i`
i=`expr $i + 1`
done if [ $rem -ne 0 ]; then
echo "$num is prime\n" else
echo "$num is not prime\n" fi
Output
ccetstudent@EMCA:~$ sh prime1.sh
-e Enter a number: 4
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1 7
4 is not prime
ccetstudent@EMCA:~$ sh prime1.sh
-e Enter a number: 7 7 is prime
22. Write a Shell Program to Find the First “N” Prime Number
echo "Enter a number: " read num1
i=2 j=2
k=0
while [ $j -lt $num1 ] do
num=$j while [ $i -lt $num ]
do if [ `expr $num % $i` -eq 0 ]
then k=1
fi i=`expr $i + 1`
done if [ $k -eq 0 ]
then echo "$num is Prime Number"
fi
j=`expr $j + 1 ` i=2
k=0 done
ccetstudent@EMCA:~$ sh prime.sh
Enter a number:
9 2 is Prime
3 is Prime 5 is Prime
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1 8
7 is Prime
ccetstudent@EMCA:~$ sh prime.sh
Enter a number:
15 2 is Prime Number
3 is Prime Number 5 is Prime Number
7 is Prime Number 11 is Prime Number
13 is Prime Number
23. Write a Shell Program to Find the given Number is Armstrong Number or Not echo -n "Enter the number: "
read Number Length=${#Number}
Sum=0 OldNumber=$Number
while [ $Number -ne 0 ] do
Rem=$((Number%10)) Number=$((Number/10))
Power=$(echo "$Rem ^ $Length" | bc ) Sum=$((Sum+$Power))
done
if [ $Sum -eq $OldNumber ]
then echo "$OldNumber is an Armstrong number"
else echo "$OldNumber is not an Armstrong number"
fi
ccetstudent@EMCA:~$ sh ams1.sh Enter the number: 3445
3445 is not an Armstrong number
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1 9
24. Write a Shell Program to reverse the digit of a given Number
echo "Program to Reverse the Digit" echo "Enter the Number"
read num reve=0
while [ $num -ne 0 ] do
reve=`expr $num % 10 + $reve \* 10` num=`expr $num / 10 `
done echo "The Reverse Digit is :"$reve
ccetstudent@EMCA:~$ sh rever.sh
Program to Reverse the Digit Enter the Number
123 The Reverse Digit is :321
ccetstudent@EMCA:~$ sh rever.sh
Program to Reverse the Digit Enter the Number
12345 The Reverse Digit is :54321
25. Write a Shell Program to Find the Sum of digit for a given Number
echo "Enter the Number"
read n sd=0
sum=0 while [ $n -gt 0 ]
do sd=$(( $n % 10 ))
n=$(( $n / 10 )) sum=$(( $sum + $sd ))
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2 0
done
echo "Sum of all digits is $sum"
ccetstudent@EMCA:~$ sh sum.sh Enter the Number
1234 Sum of all digits is 10
26. Write a Shell program to execute various UNIX Commands using Case Statements
echo " MENU " echo "1. List of Files in the Current Directory"
echo "2. Today's Date"
echo "3. Display the Present Month of the Calendar" echo "4. Logged In Users"
echo "5. Display the Current Working Directory" echo "6. Quit from the Menu"
echo -n "Enter your Choice:" read ch
case $ch in 1) ls;;
2) date;; 3) cal;;
4) who;; 5) pwd;;
6) exit;; *) echo "invalid choice"
exit;;
esac
Enter your Choice:3
March 2013 Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23
24 25 26 27 28 29 30 31
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2 1
27. Write a Shell program to count the number of vowels in
a line of text
echo "Enter the text:" read s
l=`expr length $s` c=1
vc=0 while [ $c -le $l ] do
r=`expr substr $s $c 1` if [ $r = 'a' -o $r = 'e' -o $r = 'i' -o $r = 'o' -o $r = 'u' ]
then vc=`expr $vc + 1` fi
c=`expr $c + 1` done
echo "The number of vowels in the text $s is: $vc"
The number of vowels in the text love is: 2 ccetstudent@EMCA:~$ sh vow.sh
Enter the text:
manivannan The number of vowels in the text manivannan is: 4
28. Write a Shell program to find the sum of odd digits and
even digits from a number
# shell program to find the sume of odd digits and even digits
echo "Enter a number" read n
os=0 es=0
while [ $n -gt 0 ] do
r=`expr $n % 10`
if [ `expr $r % 2` = 0 ] then
es=`expr $es + $r`
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2 2
else
os=`expr $os + $r` fi
n=`expr $n / 10` done
echo "The sum of odd digits is: $os" echo "The sum of even digits is: $es"
ccetstudent@EMCA:~$ sh oddeven.sh
Enter a number 1234
The sum of odd digits is: 4 The sum of even digits is: 6
29. Write a Shell program to find the smallest and larges
number from a set of given number
echo "Enter the number of elements:"
read n s=9999
s1=0 i=1
while [ $i -le $n ] do
echo "enter the numbers" read no
if [ $no -lt $s ] then
s=$no fi
if [ $no -gt $s1 ]
then s1=$no
fi i=`expr $i + 1`
done shecho "The smallest number is:$s"
echo "The greatest number is:$s1" ccetstudent@EMCA:~$ sh great.sh
Enter the number of elements: 4
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2 3
enter the numbers
123 enter the numbers
456 enter the numbers
234 enter the numbers
336 The smallest number is:123
The greatest number is:456
30. Write a Shell program to check the given number and
its reverse are same
echo "Enter the Number" read n
# store Single Digit sd=0
# Stroe number in reverse order rev=""
#store original number on=$n
while [ $n -gt 0 ] do
sd=$(($n % 10 ))
n=$(($n / 10 )) rev=$(echo ${rev}${sd})
done echo "$on in a reverse order $rev"
if [ $on -eq $rev ]
then echo "The two Numbers are same"
else echo "The two Numbers are different"
fi
ccetstudent@EMCA:~$ sh rev.sh Enter the Number
123 123 in a reverse order 321
![Page 24: List of Shell Programschettinadtech.ac.in/storage/13-04-26/13-04-26-14-20-12...2 27 Shell Program to count the number of vowels in a line of text 28 Shell Program to find the sum of](https://reader031.vdocuments.mx/reader031/viewer/2022021510/5aa9a1017f8b9a90188d18dc/html5/thumbnails/24.jpg)
2 4
The two Numbers are different
31. Write a Shell program to generate Fibonacci Series
echo "Enter the Limit"
read n i=2
echo "Fibonacci Series" echo "-----------"
a=0 b=1
echo $a echo $b
while [ $i -lt $n ] do
c=`expr $a + $b` echo $c
a=$b
b=$c i=`expr $i + 1`
done
ccetstudent@EMCA:~$ sh fib.sh
Enter the Limit
5 Fibonacci Series
----------- 0
1 1
2 3
32. Write a Shell program to find the sum of square of Individual Digits
echo "Enter the Number"
read a
b=1 c=0
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2 5
while [ $a -gt 0 ]
do b=`expr $a % 10`
c=`expr $c + $b \* $b \* $b` a=`expr $a / 10`
done echo "The Sum of Square of digits is "$c
ccetstudent@EMCA:~$ sh squ.sh
Enter the Number 12
The Sum of Square of digits is 9
33. Write a Shell program to find the sum of cube of
Individual digits of a given Numbers
echo "Enter the Number" read a
b=1 c=0
while [ $a -gt 0 ] do
b=`expr $a % 10` c=`expr $c + $b \* $b \* $b \* $b`
a=`expr $a / 10` done
echo "The Sum of Cube of digits is "$c
ccetstudent@EMCA:~$ sh cub.sh Enter the Number
12 The Sum of Cube of digits is 17
34. Write a Shell program to find the Smallest and Largest
digits of a numbers
echo "Enter a number:"
read n s1=9
s=0 while [ $n -gt 0 ]
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2 6
do
r=`expr $n % 10` if [ $r -gt $s ]
then s=$r
fi if [ $r -le $s1 ]
then s1=$r
fi n=`expr $n / 10`
done echo "The largest digit is:$s"
echo "The Smallest digit is:$s1" ccetstudent@EMCA:~$ sh larg.sh
Enter a number:
2540235 The largest digit is:5
The Smallest digit is:0
35. Write a Shell program to compute Gross Salary of an
Employee
echo "Enter the basic salary:"
read basic if [ $basic -lt 1500 ]
then hra=`expr $basic \* 10 / 100`
da=`expr $basic \* 90 / 100` else
hra=500 da=`expr $basic \* 98 / 100`
fi
gs=`expr $basic + $hra + $da` echo "HRA:$hra"
echo "DA:$da" echo "Gross Salary: $gs"
ccetstudent@EMCA:~$ sh gross.sh
Enter the basic salary: 14000
![Page 27: List of Shell Programschettinadtech.ac.in/storage/13-04-26/13-04-26-14-20-12...2 27 Shell Program to count the number of vowels in a line of text 28 Shell Program to find the sum of](https://reader031.vdocuments.mx/reader031/viewer/2022021510/5aa9a1017f8b9a90188d18dc/html5/thumbnails/27.jpg)
2 7
HRA:500
DA:13720 Gross Salary: 28220
36. Write a Shell program to find the Degree of X in a
Quadratic Equation
echo "enter the value for a"
read a echo "enter the value for b"
read b echo "enter the value for c"
read c d=`expr $b \* $b - 4 \* $a \* $c`
x1=`echo "scale=3; (-$b + sqrt($d)) / (2 * $a)" | bc` x2=`echo "scale=3; (-$b - sqrt($d)) / (2 * $a)" | bc`
echo "Root 1: $x1" echo "Root 2: $x2"
ccetstudent@EMCA:~$ sh qua.sh
enter the value for a 3
enter the value for b 5
enter the value for c 2
Root 1: -.666 Root 2: -1.000
37. Write a Shell program to display the digits which are in
Odd Position in a given Number
#shell program to display the digits which are in odd position
echo "Enter a number" read n
i=1 while [ $n -gt 0 ]
do r=`expr $n % 10`
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2 8
if [ `expr $i % 2` -ne 0 ]
then echo "The odd digits are: $r"
fi n=`expr $n / 10`
i=`expr $i + 1` done
ccetstudent@EMCA:~$ sh pos.sh
Enter a number 12567
The odd digits are: 7 The odd digits are: 5
The odd digits are: 1
38. Write a Shell program to Check the given String is
Palindrome or Not
echo "Enter the String"
read s l=`expr length $s`
c=1 p=""
while [ $c -le $l ]
do e=`expr substr $s $c 1`
p=$e$p c=`expr $c + 1`
done if [ $p = $s ]
then echo "palindrome"
else echo "Not palindrome"
fi
ccetstudent@EMCA:~$ sh pol.sh Enter the String
malayalam palindrome