Re: Bug in expr***urgent

[Pádraig Brady]

On 11/01/10 05:50, salih k wrote:
> Hi,
> There is a bug iin the expr command and exit status is"51198" some times
> "1552"
> I have used expr to check whether the variable is numeric
>         add_num=`expr $int_num + 1 1>/dev/null 2>&1`
>   kms=$?
>         # if [ "$?" -ne "0" ]
>           if [ "$kms" -ne "0" ]
>          then
> here $kms returns exit status other than zero even if $int_num is numeric

That works fine here:

  expr $int_num + 0 && echo numeric

You'll need to provide the version of expr
and the shell you're using at least.

cheers,
Pádraig.