The string of characters in the special character by grep as a command

[fengyalei]

HI:

   Now, I have four files in my directory:alarm.log
,alarm.log.20100802125915,alarm.log.wf and control.log; I will extract
information from alarm.log.wf, orders for grep - E "FATAL|WARNING" |tail -n
1, at the command line -- I got the correct output WARNING: 08-04 20:41:11:
alarm * 1126189408 close log_r.1126189408.wf. 

But use script: ss =`grep -E "FATAL|WARNING" alarm.log.wf|tail - n 1`, echo
$ss, output is WARNING: 08-04 20:41:11: alarm alarm.log
alarm.log.20100802125915 alarm.log.wf  control.log close
log_r.1126189408.wf.It took "*" in the string as a special characters .I
think this is a bug.

Could you give me a resultion?Makeing the script and command line have same
output. 

 

 

 

 
Think you!

 
Yalei Feng .   CHina