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  1. #!/bin/bash
  2. echo '{"base":"EUR","date":"2016-03-01","rates":{"USD":1.0872}}' | grep -oP '(?<="USD":)\d+(?:\.\d+)?'
  3. echo '{"base":"EUR","date":"2016-03-01","rates":{"USD":.0872}}' | grep -oP '(?<="USD":)\d*\.?\d+'
  4. echo '{"base":"EUR","date":"2016-03-01","rates":{"USD":-.0872}}' | grep -oP '(?<="USD":)-?\d*\.?\d+'
Success #stdin #stdout 0s 5028KB
comments (?)
stdin 
Standard input is empty
stdout 
1.0872
.0872
-.0872
https://ideone.com/q1019b
language:
Bash (bash 5.0.3)
created:
9 years ago
visibility:
secret

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