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  1. #!/bin/bash
  2. s='---------
  3. foo bar
  4. more foo bar
  5. ---------'
  6. grep -Poz '(?s)-\R\K.*(?=\R-)' <<< "$s"
Success #stdin #stdout 0s 4404KB
comments (?)
stdin 
Standard input is empty
stdout 
foo bar
more foo bar
https://ideone.com/EDLhKK
language:
Bash (bash 5.0.3)
created:
5 years ago
visibility:
public

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