1)A.
Write a shell script to print contains of file from given line number to next given
number of lines
echo "Enter the file name :"
read f
echo "Enter the starting line :"
read s
echo "Enter the ending line :"
read e
sed -n $s,$e\p $f
B. create a Linux shell script program to add two numbers.
a=10
b=20
sum=$(( $a + $b ))
echo $sum
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2). A. create a Linux shell script program to swap two numbers.
first=5
second=10
temp=$first
first=$second
second=$temp
echo "After swapping, numbers are:"
echo "first = $first, second = $second"
B. Write a Shell script to find whether entered year is Leap or not.
echo "Enter a y"
read y
if [‘expr $y%4’ -eq 0];
then
echo "$year is a leap year."
else
echo "$year is not a leap year."
fi
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3A. Write a program to add 2 nos. supplied as command line arguments.
read a
read b
sum=$(( $a + $b ))
echo "Sum is: $sum"
B. create a Linux shell script program to multiply two numbers.
read a
read b
sum=$(( $a * $b ))
echo "Sum is: $sum"
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4A. Write a program to add 2 nos. supplied as command line arguments.
read a
read b
sum=$(( $a + $b ))
echo "Sum is: $sum"
Write a program to find out biggest number from given three nos.
#!/bin/bash
echo "Enter three numbers: "
read a
read b
read c
if [ $a -gt $b -a $a -gt $c ]
then
echo $a is the biggest number
elif [ $b -gt $a -a $b -gt $c ]
then
echo $b is the biggest number
else
echo $c is the biggest number
fi
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5A. create a Linux shell script program to print program name using command-line.
#!/bin/bash
# Program name: "script_name.sh"
# shell script program to print program name using command line argument.
echo Script program Name: $0
B. WAP to Calculate average of given numbers. (50, 100, 150)
echo "Enter numbers to find their average (space-separated): "
read a
read b
read c
sum=$(echo “$a + $b + $c” | bc -l)
avg=$(echo “$sum/3” | bc -l)
echo “sum = $sum”
echo “Average = $avg”
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A. create a Linux shell script program to create and print the value of variables.
country="India"
year=2021
echo "Country name: $country"
echo "Year: $year"
B. Write script to print given number in reverse order, for eg. If no is 123 it must print
as 321. (use while loop).
echo "enter the number "
read num
while [ $num != 0 ]
do
d=$(($num % 10 ))
num=$(($num / 10 ))
rev=$( echo ${rev}${d} )
done
echo $rev
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Write a Shell script to say Good morning/Afternoon/Evening as you log in to
system.
hour=$(date +%H)
if [ $hour -lt 12 ]; then
greet="Good morning"
elif [ $hour -le 18 ]; then
greet="Good afternoon"
else
greet "Good evening"
fi
echo “$greet”
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Write a script to print following print.(use for loop)
echo "Enter the number of rows: "
read n
for((i=1; i<=n; i++))
do
for((j=1; j<=n-i; j++))
do
echo -n " "
done
for((j=1; j<=2*i-1; j++))
do
echo -n "*"
done
echo ""
done
for((i=n-1; i>=1; i--))
do
for((j=1; j<=n-i; j++))
do
echo -n " "
done
for((j=1; j<=2*i-1; j++))
do
echo -n "*"
done
echo ""
done
(for diamond)
For inverted pattern
----
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A. Explain find and grep command with example.
grep -i -o word filename.txt | wc -l
B. Calculating factorial of given number.
echo “Enter a number”
read num
fact=1
while[ $num -gt 1]
do fact=$((fact * num))
num=$((num - 1))
done
echo $fact
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B. Converting decimal number to hexadecimal number.
echo "enter number"
read n
c=$(echo "obase=16;$n" | bc)
echo hexadecimal $c
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i. Program to check whether given file is a directory or not.
echo "Enter the name of the file"
read var
if [ -d $var ]
then
echo "The provided argument is the directory."
#Using -f option we are checking whether the first argument is a file or not.
elif [ -f $var ]
then
echo "The provided argument is the file."
#if the provided argument is not file and directory then it does not exist on the system.
else
echo "The given argument does not exist on the file system."
fi
ii. program to count number of files in a Directory.
echo "Enter the name of the directory"
read var
ls "$var"|wc -l
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B. calculate the total count of occurrences of a particular word in a file.
grep -i -o word filename.txt | wc -l
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B. write an awk script to find the no of characters, words and lines in a file.
BEGIN{}
{
print len=length($0),"\t",$0
wordcount+=NF
chrcnt+=len
}
END {
print "total characters",chrcnt
print "Number of Lines are",NR
print "No of Words count:",wordcount
}
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. B. write an awk script to count number of lines in a file that does not contain vowels.
echo "Enter file name"
read file
awk '$0!~/[aeiou]/{ count++ }
END{print "The number of lines that does not contain vowels are: ",count}' $file
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A. Write a perl script to compute power of a given number.
for($i=1;$i<10 ;$i++ )
printf $i^2 . "\n";
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