Practical no-4:
Write a UNIX Shell script to Execute various
oprations on string
clear
i="y"
a=0
t=0
while
[ $i = "y" ]
do
clear
echo
"1.Compare 2 strings :"
echo
"2.Concatanet string"
echo
"3.Find length of string"
echo
"4.Occurance of word"
echo
"5.Reverse of string"
echo
"6.Exit"
echo
"Enter your choice"
read
ch
case
$ch in
1)echo "Enter first String"
read s1
echo "Enter second string "
read s2
if [ $s1 = $s2 ]
then
echo "Two strings are equal
"else
echo "Two strings are not
equal"
fi;;
2)echo "Enter one string "
read s1
echo "Enter second string "
read
s2
echo $s1 $s2;;
3)echo "Enter any String"
read s1
t=`echo $s1|wc -c`
t=`expr $t - 1`
echo
"Length of "$s1" is "$t;;
4)echo "Enter any String "
read s1
echo "Enter word u want to find
occurance of:"
read
c1
t=`echo $s1|wc -c`
t=`expr $t - 1`
echo
"length "$t
while
[ $t -ne 0 ]
do
temp=`echo $s1|cut -c $t`
temp2=`echo $temp2 $temp`
#echo $temp2
if [ $temp2 = $c1 ]
then
a=`expr $a + 1`
t=`expr $t - 1`
else
t=`expr $t - 1`
fi
done
echo "Occurance of "$c1" is
"$a;;
5)echo "Enter any string :"
read s1
t=`echo $s1|wc -c`
t=`expr $t - 1`
echo "length "$t
while [ $t -ne 0 ]
do
temp=`echo $s1|cut -c $t`
echo $temp
temp2=`echo $temp2 $temp`
t=`expr $t - 1`
done
echo $temp2;;
6)exit;;
*)echo "Invalid choice";;
esac
echo
"Do u want to continue ?"
read
i
if
[ $i != "y" ]
then
exit
fi
done
OUTPUT
***********
[root
@LINTEL]$ sh string.sh
1.Compare
2 strings :
2.Concatanet
string
3.Find
length of string
4.Occurance
of word
5.Reverse
of string
6.Exit
Enter
your choice1
Enter
first String String1
Enter
second string String2
Two
strings are not equal
