Fibonacci Range [Shell Program]

echo "Enter the
range"

read r

a=0

b=1

c=1

echo "Fibonacci
series:\n"

echo "$a $b
\c"

while [ $c -lt $r ]

do

c=`expr $a + $b`

if [ $c -le $r ]

then

echo "$c \c"

fi

a=$b

b=$c

done

echo "\n"

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Fibonacci Series generator [Shell Program]

echo "Enter the Number of Terms"

read n

a=0

b=1

count=1

n1=`expr $n - 2`

if [ $n -eq 1 ]

then

echo "The
Fibonacci series is:"$a

elif [ $n -eq 2 ]

then

echo "The
Fibonacci series is:"$a $b

else

echo "The
Fibonacci series is:"

echo "$a $b
\c"

while [ $count -le $n1 ]

do

c=`expr $a + $b`

echo "$c \c"

a=$b

b=$c

count=`expr $count +
1`

done

fi

echo "\n"

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Factorial of a Number [Shell Program]

echo "Enter a
number"

read n

f=1

if [ $n -eq 0 ]

then

echo "Factorial
is: 1"

else

while [ $n -ge 1 ]

do

f=`expr $f \*
$n`

n=`expr $n - 1`

done

echo "Factorial
is:"$f

fi

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To the Power [Shell Program]

echo "Enter the
Value of x"

read x

echo "Enter the
Value of y"

read y

r=1

while [ $y -gt 0 ]

do

r=`expr $x \*
$r`

y=`expr $y - 1`

done

echo "The value
of x^y is:"$r

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Frequency of a Character in a String [Shell Program]

clear

echo "Enter the
String:\c"

read str

echo "Enter the
character:\c"

read ch

n=0

i=`expr
"$str" : ".*"`

while [ $i -ne 0 ]

do

 m=`echo $str|cut -c $i`

 if [ "$m" = "$ch" ];then

 
n=`expr $n + 1`

 fi

 i=`expr $i - 1`

done

echo "The
frequency is :" $n

 

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Calculator [Shell Program]

clear

ans=Y

while [ "$ans" = "Y" ]

do

clear

echo "*****MENU*****"

echo "1.ADD"

echo "2.SUBSTRACT"

echo "3.MULTIPLY"

echo "4.DIVIDE"

echo "5.MOD"

echo "0.EXIT"

echo "Enter your
Choice"

read ch

case $ch in

1) echo "Enter the
1st number"

  
read num1

  
echo "Enter the 2nd number"

  
read num2

  
s=`expr $num1 + $num2`

  
echo "The result:"$s;;

2) echo "Enter the
1st number"

  
read num1

  
echo "Enter the 2nd number"

  
read num2

  
s=`expr $num1 - $num2`

  
echo "The result:"$s;;

3) echo "Enter the
1st number"

  
read num1

  
echo "Enter the 2nd number"

  
read num2

  
s=`expr $num1 \* $num2`

  
echo "The result:"$s;;

4) echo "Enter the
1st number"

  
read num1

  
echo "Enter the 2nd number"

  
read num2

  
s=`expr $num1 / $num2`

  
echo "The result:"$s;;

5) echo "Enter the
1st number"

  
read num1

  
echo "Enter the 2nd number"

  
read num2

  
s=`expr $num1 % $num2`

  
echo "The result:"$s;;

0) exit;;

*) echo "WRONG
CHOICE";;

esac

echo "Do you want
to continue?(Y/N)"

read ans

done

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Display the Calendar [Shell Program]

clear

echo " Enter the
Year: \c"

read year

echo " Enter the
Month: \c"

read month

m=0

case "$month" in

1|jan) m=1;;

2|feb) m=2;;

3|mar) m=3;;

4|apr) m=4;;

5|may) m=5;;

6|jun) m=6;;

7|jul) m=7;;

8|aug) m=8;;

9|sep) m=9;;

10|oct) m=10;;

11|nov) m=11;;

12|dec) m=12;;

*) echo $month  "is not a valid Month! Showing
Calendar for " $year ;;

esac

if [ $m -ne 0 ]

then

cal $m $year

else

cal $year

fi

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Find a Pattern from a File [Shell Program]

echo "Enter
pattern to be searched:\c"

read pname

echo "Enter file
name :\c"

read fname

echo "Search for
$pname from file $fname:"

grep "$pname" $fname

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Resource Test [Shell Program]

echo "Enter the
Resource name"

read fname

if ( test -s $fname )

then

ls -l $fname

if ( test -d $fname )

then

echo "It is a
directory"

else

echo "It is a
file"

fi

if ( test -r $fname )

then

echo "It is a
readable"

fi

if ( test -w $fname )

then

echo "It is
writable"

fi

if ( test -x $fname )

then

echo "It is
executable"

fi

else

echo "No such
resource present"

fi

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Find the greatest among two numbers [Shell Program]

echo "Enter 1st number :\c"

read a

echo "Enter 2nd number :\c"

read b

if [ $a -gt $b ]

then

echo "$a greater than $b"

else

echo "$b less than $a"

fi

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