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  1. #!/bin/bash
  2. s="alt='Text-01'
  3. alt='Text 02'
  4. alt=''
  5. alt='Some long text'"
  6. grep -oP "alt='(?:\K[^']+|')" <<< "$s"
  7.  
Success #stdin #stdout 0s 4960KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Text-01
Text 02
alt=''
Some long text
https://ideone.com/chEy4o
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
secret

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