Write a Linux shell script that prints only given no. of lines from top & bottom of a file, Unix program to print numbers from top & bottom of a file
Program
clear
echo-n "Enter file name:"
read fn
echo-n "No. of line:"
read n
t='head-$n<$fn'
b='tail-$n<$fn'
echo"Top:"
echo$b
Output:
Enter file name: temp.sh
No. of line:3
Note : 3 lines from top and 3 lines from bottom are displayed here.
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Write a Linux shell script to convert uppercase to lowercase letters for a given file, Unix program to convert uppercase to lowercase letters
Program
clear
echo"Enter file name:"
read fn
a='tr'[A-Z]''[a-z]'<$fn'
echo$a
Output:
Enter File name: temp.sh
ALL THE CONTENT IS CONVERTED INTO CAPITAL LETTERS.
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Write a Linux shell script to count number of characters, words & lines, Unix program to count number of characters, words & lines
Program
clear
echo-n "Enter file name:"
read fn
c='wc-c<$fn
w='wc-w<$fn
l='wc-l<$fn
echo"NO. of characters:"$C
echo"No.of Words:"$w
echo"No.of Lines:"$1
Output:
Enter file name: temp.sh
No.of characters:359
No. of words:45
No. of lines:6
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Write a Linux shell script to check whether the entered number is Armstrong number or not using the command line argument, Unix program for Armstrong number
Program
clear
no=$1
n=$1
while[ $n-gt 0]
do
a='expr $n%10'
a3='expr$a\*$a\*$a'
temp='expr$temp+ $a3'
n='expr$temp+$a3'
done
if[$temp-eq$no]
then
echo"It is Armstrong number"
else
echo"It is Armstrong number"
fi
Output:
>sh Armstrong.sh 159
It is Armstrong number
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Write a Linux shell script to list, make, delete & copy file, Linux shell script to display, change & remove a directory, Unix program list, make, delete, copy file & directory
Write a Linux shell script to display the following menu.
1) Files- 1. List files
2. Make a file
3. delete a file
4. Copy a file1.
2) Directory- 1. Make a directory
2. Display current directory
3. Change current directory
4. Remove current directory
3) Quit
Program
clear
echo"1.FILE"
echo"2.DIRECTORY"
echo"3.QUIT"
echo""
echo-n"Enter your choice:"
read ch
case $ch in
1) echo""
echo" 1. List files
echo" 2. Make a file
echo" 3. delete a file
echo" 4. Copy a file
echo""
echo-n "Enter ypur name"
read ch1
case $ch1in
1) echo""
is;;
2) echo""
echo-n "Enter file name:"
read fn
cat>$fn
echo "File successfully created"
echo""
is;;
3) echo""
echo-n"Enter file name to delete"
read fn
rm-r$fn
echo""
echo"File successfully deleted"
echo""
IS;;
4) echo""
echo-n "Enter file name from you want to copy:"
read f1
echo-n" Enter file name to you want to copy:"
read f2
cp $f1 $f2
echo""
echo" File successfully copied";;
esac;;
2) echo""
echo" 1. Make a directory
echo" 2. Display current directory
echo" 3. Change current directory
echo" 4. Remove current directory
echo""
echo-n "Enter your choice:"
read ch2
case $ch2 in
1) echo""
echo-n "Enter the name for directory:"
read dn
mkdir $ dn
echo""
echo" Directory successfully created"
echo""
is;;
2) echo-n "Current directory:"
pwd
echo""
3) echo""
echo-n" Current directory:"
pwd
echo-n"Enter the name of directory you want to go to:"
read dn
cd $dn
echo"Directory has been changed successfully"
echo-n " Current directory"
pwd
echo"";;
4) echo""
echo-n "Enter old name:"
read od
echo-n "Enter new name:"
read nd
mv $od $nd
echo" Directory successfully renamed"
echo"";;
esac;;
3) exit;;
esac
Output:
1. FILE
2. DIRECTORY
3. QUIT
Enter your choice:1
1. LIST FILES
2. MAKE FILE
3. DELETE FILE
4. COPY FILE
Enter your choice:2
All files in current directory are listed here.
Write a Linux shell script for calendar for current month & year also for range of months, Unix program to print the calender
Program
clear
cal
echo""
echo""
echo"Enter year"
read y
echo"Enter starting month"
read m1
echo"Enter ending month"
read m2
for ((i=m1;i<=m2;i++))
do
cal $i$y
done
Output:
Enter year 2009
Enter starting month :2
Enter ending month :3
Note: it will show Feb. 2009 and month 2009 cal.
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Write a Linux shell script that evaluates the following series 1+1/1+1/2+1/3+...+1/n, Unix program to evaluates the series
Program
clear
echo"Enter number upto which series to be printed"
read n
sum=1
for((i=1;i<=n;i++))
do
sum='echo$sum +1\$i|bc-1'
done
echo$ sum
Output:
Enter number upto which series to be printed:2
2.5
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Write a Linux shell script for generating mark sheet & calculate grade also, Linux program to find total, average, percentage & Grade for given subjects
Program
clear
echo"Enter no of students:"
read ns
for((i=1;i<ns;i++))
do
echo""""
echo"Enter roll no of student$i:"
read s1[i]
echo "Enter subject1 marks:"
reads1[i]
echo "Enter subject2 marks:"
reads2[i]
echo "Enter subject3 marks:"
reads3[i]
done
for((i=1;i<ns;i++))
do
total[i]='expr${s1[i]}+${s2[i]}+${s3[i]}
avg[i]='expr${total[i]}/3'
if[$avg[i]-ge70]
then
grd[i]="DISTINCTION"
elif[$avg[i]=ge60-a$avg[i]-le69]
then
grd[i]="SECONDCLASS"
elif[$avg[i]=ge40-a$avg[i]-le49]
then
grd[i]="PASSCLASS"
else
grd[i]="FAIL"
fi
done
for((i=1;i,=ns;i++))
do
echo""
echo"______________________________"
echo"Roll no:"${rn[i]}
echo"______________________________"
echo" Subject 1 "${s1[i]}
echo" Subject 2 "${s2[i]}
echo" Subject 3 "${s3[i]}
echo"______________________________"
echo"Total "${total[i]}
echo"______________________________"
echo" Percentage: "${avg[i]}
echo"______________________________"
echo" Grade: "${grd[i]}
echo"______________________________"
echo""
done
Output:
Enter no of student:1
Enter roll no for student:21
Enter marks for subject1:90
Enter marks for subject2:91
Enter marks for subject3:92
_____________________________________
Roll no:21
_____________________________________
Subject 1 90
Subject 2 91
Subject 3 92
_____________________________________
Total 276
_____________________________________
Percentage: 91
_____________________________________
Grade Distinction
_____________________________________
Write a Linux shell script that reverses the string, Unix program to find shell script that reverses the string
Program
clear
echo "Enter any string:"
read a
b=$a
d='expr$a|wc-c'
c='expr$d-1'
while[$c-gt 0]
do
n='expr$a|cut-c$c'
r=$r$n
c='expr$c-1
done
echo"Reverse string:"$r
Output:
Enter any string:
laptop
Reverse string: potpal
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Write a Linux shell script to check whether the string is palindrome, Unix program to check whether the string is palindrome
Program
clear
echo"Enter any string:"
read a
b=$a
d='expr$a| wc-c'
c='expr$d-1
While [$c-gt 0]
do
n='expr $a|cut-c$c'
r=$r$n
c='expr$c-1
done
echo$r
if[$b==$r]
then
echo"String is palindrome"
else
echo"Not palindrome string"
fi
Output:
Enter any string:
madam
madam
String is palindrome.
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Write a Linux shell script to find factorial of a given number, Unix program to find factorial of n numbers
Program
clear
echo "Enter the number:"
read n
fact=1
for ((i=1;i<=n;i++))
do
fact='expr$fact\*$i'
done
echo "Factorial:"$fact
Output
Enter the number
4
Factorial:24
Write a Linux shell script that reverses the number, Unix program to reverse the number
Program
clear
echo "Enter any number:"
read n
sum=0
while [ $n-gt 0]
do
a='expr $n%10'
done
echo "Reverse no:" $Sum
Output
Enter any number
435
Reverse no: 534
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Write a Linux shell script to print and add all even numbers between given range, Unix program to print and add all even numbers
Program
clear
echo "Enter Starting no:"
read n1
echo "Enter Ending no:"
read n2
sum=0
for((i=n1;i<=n2;i++))
do
if['expr $i%2'-eq 0]
then
echo $1
sum= 'expr $sum +$i'
fi
done
echo "Sum :"$sum
Output:
Enter Starting no:
2
Enter Ending no:
8
2
4
6
8
Sum :20
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Write a Linux shell script to generate prime number from 1 to n, where n is any positive integer number entered by user, Unix program for prime numbers from 1 to n
Program
clear
echo "Enter the number upto which you want prime numbers:"
read n
for ((i=1;i<=n;++))
do
flag=0
for ((j=2;j<i;j++))
do
if [ 'expr $i % $j' -eq 0]
then
flag=1
fi
done
if [$flag-eq 0]
then
echo $i
fi
done
Output:
Enter the number upto which you want prime numbers:
10
1
2
3
5
7
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Write a Linux shell script to generate fibonacci number from 1 to n, Unix program for fibonacci series
Program
clear
echo "Enter the number upto which you want series :"
read n
n1=0
n2=1
echo $n1
echo $n2
for ((i=0;i<n;i++))
do
n3='expr $n1 + $n2 '
echo$n3
n1= $n2
n2= $n3
done
Output:
Enter the number upto which you want series :
5
0
1
1
2
3
5
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Write a Linux shell script to wish good morning, Good afternoon and Good night as per current system time, Unix program to use current system time
Program
clear
date>dt
tm= 'cut-c 12-13 dt'
echo $tm
if [ $tm-lt 12]
then
echo "Good Morning!!"
elif [$tm-gt12-a $tm-lt16]
then
echo "Good Afternoon!!"
elif [$tm-gt16-a $tm-lt20]
then
echo "Good Evening!!"
else
echo "Good Night!!"
fi
Output
Good Afternoon
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Write a Linux shell script that performs simple arithmetic operation on given input, Unix program to performs simple arithmetic operation i.e addition, multiplication, division, subtraction, modules
Program
clear
echo "Enter first no :"
read a
echo "Enter second no :"
read b
echo "1. Addition"
echo "2. Subtraction"
echo "3. Multiplication"
echo "4. Division"
echo "5. Modulo operation"
echo "6. Exit"
echo "Enter your choice :"
read ch
case $ch in
1) echo Answer = 'expr $a+ $b';;
2) echo Answer = 'expr $a- $b';;
3) echo Answer = 'expr $a\*$b';;
4) echo Answer = 'expr $a/$b';;
5) echo Answer = 'expr $a%$b';;
6) exit
esac
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