"Chris F.A. Johnson" <cfajohnson@gmail.com> writes:

> On 2006-08-26, Doug Ritschel wrote:
>> i=0
>> while read line; do
>> i = `expr $i + 1`
>> done < /etc/hosts
>> echo $i
>
> Second, you were not running it (with the error fixed) in a Bourne
> shell. If you were, you would still have seen '0'. In a Bourne
> shell, the redirecion alone is enough to force a subshell.

Are you sure?

$ cat test.sh
i=0
while read line; do i=$(($i + 1)); done </etc/hosts
echo $i
$ ash test.sh
24
$ bash test.sh
24
$ zsh test.sh
24


Any pointers to standards which support your claim?

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