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  1. #!/bin/bash
  2. echo 'wahegru.com mail is handled by 1 ASPMX.L.GOOGLE.com. wahegru.com mail is handled by 10 ALT4.ASPMX.L.GOOGLE.com. wahegru.com mail is handled by 5 ALT1.ASPMX.L.GOOGLE.com. wahegru.com mail is handled by 10 ALT3.ASPMX.L.GOOGLE.com. wahegru.com mail is handled by 5 ALT2.ASPMX.L.GOOGLE.com.' | \
  3.  grep -oP '(?<=10 )(\.*+\w)*+'
Success #stdin #stdout 0s 19632KB
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Standard input is empty
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ALT4.ASPMX.L.GOOGLE.com
ALT3.ASPMX.L.GOOGLE.com
https://ideone.com/tB5bUH
language:
Bash (bash 5.0.3)
created:
5 years ago
visibility:
secret

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