i have a program
#!/bin/ksh
echo "enter the id"
read id
echo "enter the name"
read name
if [ "$name" == "rose" ] && [ $id == 1111 ]
then
echo "u r logged in"
echo $name > data.txt
echo $id > data.txt
else
echo "invalid id or name"
fi
--------------------------------------------------------------------
i just want that the file data.txt should not contain any duplicate value.
plz help me in this
it should had only values 1111 rose,no matter how many times i execute the prgm.
also it is not storing the valkue of "rose" in data.txt
thanks in advance