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  1. #!/bin/bash
  2. echo "2001:0Db8:85a3:0000:8a2e:0370:7334" | grep "^\([0-9a-fA-F]\{0,4\}:\)\{1,7\}[0-9a-fA-F]\{0,4\}$"
Success #stdin #stdout 0s 19632KB
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2001:0Db8:85a3:0000:8a2e:0370:7334
https://ideone.com/tTvvfU
language:
Bash (bash 5.0.3)
created:
6 years ago
visibility:
secret

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