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  1. #!/bin/bash
  2.  
  3. # ideone boilerplate: run in temp dir 
  4. t=$(mktemp -d -t ideone.XXXXXXXX) || exit
  5. trap 'rm -rf "$t"' ERR EXIT 
  6. cd "$t"
  7.  
  8. cat <<\: >MyInitialTextFile.txt
  9. <p><nsup></nsup> <b>Abc 1:2<sup>varied text
  10. <p><nsup></nsup> <b>Abc 1:2<sup>varied text
  11. <p><nsup></nsup> <b>Abc 1:3<sup>varied text
  12. <p><nsup></nsup> <b>Abc 1:4<sup>varied text
  13. <p><nsup></nsup> <b>Abc 1:4<sup>varied text
  14. <p><nsup></nsup> <b>Abc 1:4<sup>varied text
  15. :
  16.  
  17. awk '/^<p><nsup><\/nsup> <b>/ {
  18.     str = substr($0, 21); split(str, n, /<sup>/);
  19.     if (n[1] != id) {
  20.         if (d) { printf "\n" >d; close(d) }
  21.         d = n[1] ".txt"
  22.         id = n[1]
  23.         sep = ""
  24.     }
  25.     printf "%s%s", sep, $0 >d
  26.     sep = "     "
  27.     }
  28. END { if (d) printf "\n" >d }' MyInitialTextFile.txt
  29.  
  30. tail *
Success #stdin #stdout 0.01s 5572KB
comments (?)
stdin
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Standard input is empty
stdout
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==> Abc 1:2.txt <==
<p><nsup></nsup> <b>Abc 1:2<sup>varied text     <p><nsup></nsup> <b>Abc 1:2<sup>varied text

==> Abc 1:3.txt <==
<p><nsup></nsup> <b>Abc 1:3<sup>varied text

==> Abc 1:4.txt <==
<p><nsup></nsup> <b>Abc 1:4<sup>varied text     <p><nsup></nsup> <b>Abc 1:4<sup>varied text     <p><nsup></nsup> <b>Abc 1:4<sup>varied text

==> MyInitialTextFile.txt <==
<p><nsup></nsup> <b>Abc 1:2<sup>varied text
<p><nsup></nsup> <b>Abc 1:2<sup>varied text
<p><nsup></nsup> <b>Abc 1:3<sup>varied text
<p><nsup></nsup> <b>Abc 1:4<sup>varied text
<p><nsup></nsup> <b>Abc 1:4<sup>varied text
<p><nsup></nsup> <b>Abc 1:4<sup>varied text
https://ideone.com/79P4tk
https://stackoverflow.com/questions/68374610/can-it-work-together-head-sed-and-regex-into-one-bash-script
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
secret

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