I want to update a status file, similar to this:

open OUTFILE, ">", "status.txt";
print OUTFILE "$last_date\n";
close OUTFILE;

However, if something goes wrong (e.g. the disk is full), this code
will replace "status.txt" with an empty file.  How can I update the
file while preserving the previous contents if something goes wrong?

-- 
Mark Wagner

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