What is the exact code you have been using? It's hard to help you fix something we can't see ...

As for basic issues, you cannot edit a file directly from Perl. You (generally) have to:

  1. Open a filehandle to read the file
  2. Read the file into some data structure
  3. Close the read-only filehandle
  4. Edit the data structure
  5. Open a filehandle to overwrite the file
  6. Write the data structure to the file
  7. Close the write-only filehandle

I suspect you're missing the first close and second open. That's a common mistake among newbies. To match the above 7 steps to your needs, you'll need to repeat steps 1-3 for both files.

------
We are the carpenters and bricklayers of the Information Age.

The idea is a little like C++ templates, except not quite so brain-meltingly complicated. -- TheDamian, Exegesis 6

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.

In reply to Re: Comparing files and and elements of arrays by dragonchild
in thread Comparing files and and elements of arrays by sjd6

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