pattern

[Javeed SAR]

> Hi all,
> I want to input a string which is used to create file name, and I want to 
> allow input string to consist of letters(SDK) at the start and only IR and
> DEV inbetween, and numbers(0-9) and 
> underscore( _ ) within file name. 
> Is the pattern right. 
> m/^SDK[0-9]|^SDK_[0-9]|^SDK_[0-9]_IR|^SDK_[0-9]_IR_DEV$/ 
> 
> 
> if ($input =~ /what pattern /){ 
> create file 
> } else { 
> exit 0; } 
> 
> 
> 
> Regards 
> j@veed
> 
>