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  1. #!/bin/bash
  2. s='sdk: ">=0.2.4 <3.1.1"
  3. version: ^2.3.1
  4. sdk: flutter
  5. version 1.0.0+1'
  6. sed -nE 's/.*version:[^0-9]*([0-9][0-9.]*).*/\1/p' <<< "$s"
  7. grep -oP 'version:\D*\K\d[\d.]*' <<< "$s"
Success #stdin #stdout 0.01s 5408KB
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2.3.1
2.3.1
https://ideone.com/RnLfgS
language:
Bash (bash 5.0.3)
created:
3 years ago
visibility:
secret

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