Hi All,

I have an expression as follows:-
a=`expr ${i} + ${j}` >> $log_file 2>&1

Here, if any of the values i or j or both happens to be empty then the "expr" returns error as
"expr: 0402-050 Syntax error." My problem is I am not able to re-direct this error to the log file. Its is getting displayed
on the console itself which I don't want to. Any help please.....