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  1. #!/bin/bash
  2. s="key = oldValue
  3. key=oldValue
  4. key= oldValue
  5. key =oldValue
  6. keyABC = doNotMatchThis"
  7.  
  8. sed '/^key *=/s/=.*/= newValue/' <<< "$s"
Success #stdin #stdout 0s 4288KB
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stdin
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Standard input is empty
stdout
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key = newValue
key= newValue
key= newValue
key = newValue
keyABC = doNotMatchThis
https://ideone.com/WWiIBb
language:
Bash (bash 5.0.3)
created:
6 years ago
visibility:
secret

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