Hi,
Yeah command not found means fail. But when I enter say,
fa 0/1 enable
from windows command prompt I get the message
Success..

E:\Documents and Settings\raghrao>commandparser01.pl
fa 0/1 enable
SUCCESSfa 0/1 enable     success
------------------
gigabit 0/1 asdf
SUCCESSgigabit 0/1 asdf          success
------------------
[download]

where as it should have been fail,as per the grammar defined. I am not sure if this is windows conmmand prompt issue ?.
I want the user to enter only (fa|gigabit) 0/1
If user enters extra word it should have been a fail case(command not found)..
Thanks and Regards
Raghu