Verily, on Tuesday June  5, 2001, the Sainted Kweku Addae-Mensah spake:
> However I get this warning when I run it
> Name "main::opt_f" used only once: possible typo at
> openfile.pl line 9.
> What could be the problem.

Perl's '-w' checking warns you about variables that are only used
once, as this often comes about from a typographical error.

For example:

-------------------------------------
#!/path/to/perl -w
$string = "This is fun!";
print $strng; # Oops, left out an 'i'
-------------------------------------

generates the same sort of warning...and in this case,
it is a very welcome warning, basically saying "Hey,
you mistyped a variable name.".

So, your situation amounts to exactly what your error
message said -> "possible typo".  You really don't have
a problem; Perl's just trying real hard to help you
out a bit. :)

HTH,

John
-- 
               John Fox <[EMAIL PROTECTED]>
    System Administrator, InfoStructure, Ashland OR USA
  ---------------------------------------------------------
"What is loved endures.  And Babylon 5 ... Babylon 5 endures."
              --Delenn, "Rising Stars", Babylon 5

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