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  1. file="chr1    1841    1851    4
  2. chr1    1991    2001    3
  3. chr1    2491    2501    2
  4. chr1    2491    2501    2
  5. chr1    2501    2511    1
  6. chr1    2681    2691    3
  7. chr1    2881    2891    4
  8. chr1    2891    2901    1
  9. chr1    3241    3251    1
  10. chr1    3241    3251    6
  11. "
  12.  
  13. sort -k 1,3 -k 4r <<< "$file" | awk 'last != $1" "$2" "$3 { print; last = $1" "$2" "$3; }'
Success #stdin #stdout 0.02s 5308KB
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chr1    1841    1851    4
chr1    1991    2001    3
chr1    2491    2501    2
chr1    2501    2511    1
chr1    2681    2691    3
chr1    2881    2891    4
chr1    2891    2901    1
chr1    3241    3251    6
https://ideone.com/nH6boE
language:
Bash (bash 5.0.3)
created:
11 years ago
visibility:
public

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