UNIX for Dummies Questions & Answers

I need a shell script which takes two files as input, compare the contents of the files and delete the second file if both the files are same,

echo -n "Enter file 1:"
read filename1
echo -n "Enter file 1:"
read filename1

diff $filename1 $filename2 >/dev/null
if [ `echo $?` -eq 0 ]
then
echo "Same"
rm -f $filename2

else
echo "Different"

fi

This gives output as

bash-3.1$ sh good.sh
Enter file 1:file1.txt
Enter file 1:file2.txt
diff: missing operand after `file2.txt'
diff: Try `diff --help' for more information.
Different

How to solve this

Thnaking you
Krish

That is the error
change it to

Code:

echo -n "Enter file 2:"
read filename2

HTH,
PL

See the following code:

change the 4th line read filename2

Code:

echo -n "Enter file 1:"
read filename1
echo -n "Enter file 1:"
read filename2

diff $filename1 $filename2 >/dev/null
if [  `echo $?` -eq 0 ]
then
    echo "Same"
    rm -f $filename2

else
    echo "Different"
   
fi

yyy thank you