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A sentence is a one that ends with period (.), exclamation(!) or question (?). I tried 

tr '\n' ' ' <  input | sed -e 's/[.] \s*/. \\n/g'

I see \n added in my file but the line does not really break there.

I am using bash 3.2 version on Mac OS X Mavericks.

gniourf_gniourf
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Shanthi
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1 Answers1

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See if this works. ( '\012' is new line character that tr command understands, you are replacing it with a blank space and then finally using sed to "capture" either a full stop/dot ., an exclamation !, or a question mark ? character using ( and ) and that whatever character will become available to \1 and after that you want \n new line for sed. sed boundary character that I used in the following example is #.

tr '\012' ' ' < someInputFile.txt | sed "s#\([\.\?\!]\)#\1\n#g"
AKS
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  • This did not work me. I did finally figure out a solution - thanks to google. I had to put in a hard enter in the middle of a sed: sed 's/[.?!] /*\ /g' input.txt > sentences.txt – Shanthi Nov 15 '14 at 20:41
  • did you use ' or " in sed. – AKS Nov 17 '14 at 23:39