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try:
#!/bin/sh

#a=$# #number or parameters
b=0 #starting counter

while [ $# -gt $b ]
do
b=`expr $b + 1`
echo $b
echo "Parameter is $[$b]"
done

john1212 - while [ $# > $b ] is incorrect. as scottn already stated > is a redirection operator. use -gt.

This is because you edited/created in a Windows environment and every row has a Line Feed and a CR.

The command to remove this is:

dos2unix <FileName>


Just one more comment, if you want...