What is an efficient BASH one-liner for adding line every 130 characters to a file without lines?

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Alain O'Dea

I am trying to process some largish files which lack line separators. I would like to process them with line-oriented tools like grep and sed.

I'd like to put something on the front of my pipeline that will insert a newline every 130 characters. I'm not interested in modifying the input files.

Leonid Volnitsky

If you really want efficient, there is special command (part of coreutils) for this:

fold -w130 file | ...

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