Perl Confirmation Code Generation

Heres what I wanna do...

I want to open a file that has one number in it, take that number and increment it, and then write it back to the same file -- overwriting the existing number.

heres the code i have written so far, but this is obviously not working..

#!c:perlinperl.exe -w

open(CONFIRM,"confirmation") or die "Could not generate a confirmation number for you at this time.";



print CONFIRM $number;


I think I am just opening the file wrong.. what do you think?

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