Hi all

I hav written a very small shell script in bin bash & its not working. The script is ::

#!/bin/bash
i=1.0
while [ $i -le 3.0 ]
do
	i=`expr "$i + 0.5" | bc`;
	 echo "i=$i"
done

The error is :

line 6: [: 1.0: integer expression expected

I think the use of decimals in the while loop is creating problems.

Please help, in urgent need.

Regards
Alice

You're right, the problem is that test only does integer comparisons.

How about

#!/bin/bash
i=10
while [ $i -le 30 ]
do
        i=`echo "$i + 5" | bc`
        j=$(echo "scale=1; $i / 10" | bc)
        echo "i=$i  j=$j"
done

and use j instead

Your problem is comming from the test where it is comparing [1.0 -le 3.0]

Instead of looping from 1.0 to 3.0 how about using a for loop like this:

for x in 1.0 1.5 2.0 2.5 3.0
do
echo $x
done

Hey Shibblez,rch1231 Thanx a ton for replying.

Shibblez, using the script, I was able to get my job done perfectly.

Thanx for helping out, thank u very much.

Regards
Alice