Answer / mahesh gupta

this script is written for bash :
echo Enter the string
read s
echo $s > temp
rvs="$(rev temp)"
if [ $s = $rvs ]
then
echo "it is palindrome"
else
echo " it is not"
fi

Answer / ishita sen

echo Enter the string
read s
echo $s > temp
rvs="$(rcs temp)"
if [ $s = $rcs ]
then
echo "it is palindrome"
else
echo " it is not"
fi

Answer / goutamkumar

len=0
i=1
tag=0
echo -n "Enter a String: "
read str
len=`echo $str | wc -c`
len=`expr $len - 1`
halfLen=`expr $len / 2`

while [ $i -le $halfLen ]
do
c1=`echo $str|cut -c$i`
c2=`echo $str|cut -c$len`
if [ $c1 != $c2 ] ; then
i=$halfLen
tag=1
fi
i=`expr $i + 1`
len=`expr $len - 1`
done

if [ $tag -eq 0 ]
then
echo "String is Palindrome"
else
echo "String is not Palindrome"
fi

Answer / sudhir

#!/bin/ksh

i=1
tag=0

print -n "Enter a String:"
read str
len=`echo $str | wc -c`
if [[ $len -eq 1 ]]
then
print "Enter a valid string"
exit 2;
fi

let len=len-1
let halflen=len/2;

while [[ $i -le $halflen ]]
do
c1=`echo $str | cut -c $i`
c2=`echo $str | cut -c $len`

if [[ $c1 != $c2 ]]
then
tag=1;
fi
i=`expr $i + 1`
len=`expr $len - 1`
done

if [ $tag -eq 0 ]
then
echo "String is Palindrome"
else
echo "String is not Palindrome"
fi

What does $@ mean in shell?

0 Answers  

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Explain about the slow execution speed of shells?

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What is bash used for?

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