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  1. #!/bin/bash
  2. s="#Foo bar
  3. Foo bar
  4. #Baz foo
  5. Baz foo"
  6. perl -pe 's/^#.*(*SKIP)(*F)|o{2,}/"O" x length($&)/ge' <<< "$s"
Success #stdin #stdout 0.01s 5532KB
comments (?)
stdin 
Standard input is empty
stdout 
#Foo bar
FOO bar
#Baz foo
Baz fOO
https://ideone.com/IeLkH6
language:
Bash (bash 5.0.3)
created:
3 years ago
visibility:
secret

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