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Editorial Team
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Asked: 2026-05-30T07:59:36+00:00

Given a text file named file like this: AAA 3/4 2/2 3/5 BBB 3/4

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Given a text file named file like this:

AAA 3/4 2/2 3/5 
BBB 3/4 2/3 3/3 6/7 
CCC 4/4 7/9

What should I do to get just the numerator of each fraction? like following:

AAA 3 2 2
BBB 3 2 3 6
CCC 4 7

Thank you.

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1 Answer

  1. Editorial Team
    $> cat text
AAA 3/4 2/2 3/5 
BBB 3/4 2/3 3/3 6/7 
CCC 4/4 7/9

    Idea is to match any fraction and get only numerator from each one. So, fraction is (numbers)/(numbers) . Using groups it’s easy to get what you want.

    $> sed -r -e 's/([0-9]*)\/([0-9]*)/\1/g' ./text
AAA 3 2 3 
BBB 3 2 3 6 
CCC 4 7
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