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  1. #!/bin/bash
  2. perl -nle '/(some)(?:.*?number (\d+))?/ && print join("\n", $1, $2)' <<< "some text and number 18"
  3. perl -nle '/(some)(?:.*?number (\d+))?/ && print join("\n", $1, $2)' <<< "some other text"
Success #stdin #stdout 0s 5128KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
some
18
some
https://ideone.com/Cdy3yX
language:
Bash (bash 5.0.3)
created:
3 years ago
visibility:
public

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