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  1. #!/bin/bash
  2. s='BBB-m      more info
  3. BBB        more info
  4. BBB-a      more info
  5. BBB-w      more info'
  6. awk '$1 == "BBB"{$0="; "$0}1' <<< "$s"
  7. echo "---"
  8. sed 's/^BBB[[:space:]]/; &/' <<< "$s"
  9.  
Success #stdin #stdout 0.01s 5436KB
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stdin
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Standard input is empty
stdout
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BBB-m      more info
; BBB        more info
BBB-a      more info
BBB-w      more info
---
BBB-m      more info
; BBB        more info
BBB-a      more info
BBB-w      more info
https://ideone.com/EB4Oxx
language:
Bash (bash 5.0.3)
created:
3 years ago
visibility:
public

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