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  1. #!/bin/bash
  2. s="constA 	 3.1415; //some comments"
  3. value="$(sed -En 's/constA[[:blank:]]+([0-9][0-9.]*).*/\1/p' <<< "$s")"
  4. echo $value
  5.  
Success #stdin #stdout 0s 4396KB
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Standard input is empty
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3.1415
https://ideone.com/OJfBjS
language:
Bash (bash 5.0.3)
created:
6 years ago
visibility:
secret

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