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  1. #!/bin/bash
  2. s="product: 13.6.0.35_0"
  3. grep -ow '13\.[0-9]*' <<< "$s" | head -1
  4.  
  5. sed -En 's/.* ([0-9]+\.[0-9]+).*/\1/p' <<< "$s"
  6. awk -F'[[:space:].]' '{print $2"."$3}' <<< "$s"
Success #stdin #stdout 0.01s 5504KB
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Standard input is empty
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13.6
13.6
13.6
https://ideone.com/hfRBd9
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
secret

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