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Need to extract only decimal numbers for a glob of text

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http://www.unix.com – If you have a look at this thread, you'll see that users have been posting the output a script which are numbers that range from 2 to 5 decimal places. If I dump this entire thread to txt file, how can I: 1) Delete everything except for numbers of the following formats (where 'x' is a digit and '.' is a decimal point)? 2) Format the output to be one target per line? x.xx x.xxx x.xxxx x.xxxxx xx.xx xx.xxx xx.xxxx xx.xxxxx I have experimented with some sed strings but am not making any traction. Perhaps your perl or awk ninjas have a good solution? Here is the source file which was genera (HowTos)