正则表达式

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包含error的单词且不区分大小写

\b\w*(?i)error\w*\b

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错误级别

error fatal critical 错误

\b\w*((?i)error|fatal|critical|错误)\w*\b

close refuse fail shutdown exit quit

\b\w*((?i)close|refuse|fail|shutdown|exit|quit)\w*\b

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警告级别

warn unknow disconnect timeout

\b\w*((?i)warn|unknow|disconnect|timeout)\w*\b

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成功级别

accept open success start run ok

\b\w*((?i)accept|open|success|start|run|ok)\w*\b

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IPV4

\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b

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IPV6

([A-Fa-f0-9]{1,4}::?){5,7}[A-Fa-f0-9]{1,4}

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网址

(https?|ftp|sftp|file)://[-A-Za-z0-9+&@#/%?=~_|!:,.;]+[-A-Za-z0-9+&@#/%=~_|]