unix - How to insert periodic newlines into a file with 1 incredibly long line -


i have text file 1 line, 2g characters.

i need find within file, line long open in editor - either on unix, or if ftp on pc...

is there quick / simple way insert newline, example, every 120 characters?

fold command that, if want wrap after 120.. 

fold -w120 fie > newfile

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