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Simply translates whitespace to newlines. Could be enhanced to compress out extra newlines, but that might be better handled in the next tool down the pipe, with eg uniq(1).
There are 4 alternatives - vote for the best!
Basically it creates a typical word list file from any normal text.
What happens if there is more than a single space between words, or spaces and tabs? This command will remove duplicate spaces and tabs.
The "-r" switch allows for extended regular expressions. No additional piping necessary.
Puts words on new lines, removing additional newlines.
If you can do better, submit your command here.
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