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  1. #!/bin/bash
  2. SOURCE="8.8.8.8"
  3. RX="^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}(/[0-9]{1,2})?$"
  4. if ! [[ $SOURCE =~ $RX ]];then
  5.                 echo ERROR: Invalid Source
  6.                 exit 1
  7. fi
Success #stdin #stdout 0s 19688KB
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https://ideone.com/1umTGQ
language:
Bash (bash 5.0.3)
created:
7 years ago
visibility:
secret

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