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  1. #!/bin/bash
  2. s='$2y$15$nK/B6u765645/lo0867h56546v/BnH5U5g45Aj67u67nMVtrhryt6'
  3. grep -Ea '\$2[ayb]\$.{56}' <<< "$s"
Success #stdin #stdout 0s 4380KB
stdin
Standard input is empty
stdout
$2y$15$nK/B6u765645/lo0867h56546v/BnH5U5g45Aj67u67nMVtrhryt6