Tip #1 from the Basic debugging checklist: warnings 

Filehandle INFO opened only for input at ...

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diagnostics: 

Filehandle INFO opened only for input at ...
    (W io) You tried to write on a read-only filehandle.  If you inten
+ded
    it to be a read-write filehandle, you needed to open it with "+<" 
+or
    "+>" or "+>>" instead of with "<" or nothing.  If you intended onl
+y to
    write the file, use ">" or ">>".  See perlfunc/open.

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In reply to Re: Using $" by toolic
in thread Using $" by Bugz

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