const regex = /\w{3}\s\d{2}\s\d{2}:\d{2}:\d{2}\s\w+\s\w+\[\d+\]:\squery\[\w+\]\s([\da-z\.-]+\.[a-z]{2,6})\s\w+\s(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('\\w{3}\\s\\d{2}\\s\\d{2}:\\d{2}:\\d{2}\\s\\w+\\s\\w+\\[\\d+\\]:\\squery\\[\\w+\\]\\s([\\da-z\\.-]+\\.[a-z]{2,6})\\s\\w+\\s(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})', 'gm')
const str = `Jul 30 00:00:41 rpi dnsmasq[571]: query[A] officescan.corp.arcon.com.br from 192.168.5.187
Jul 30 00:00:43 rpi dnsmasq[571]: query[A] teams.events.data.microsoft.com from 192.168.5.187
Jul 30 00:00:43 rpi dnsmasq[571]: forwarded teams.events.data.microsoft.com to 1.0.0.1
Jul 30 00:00:43 rpi dnsmasq[571]: forwarded teams.events.data.microsoft.com to 1.1.1.1
Jul 30 00:00:43 rpi dnsmasq[571]: reply teams.events.data.microsoft.com is <CNAME>
Jul 30 00:00:43 rpi dnsmasq[571]: reply teams-events-data.trafficmanager.net is <CNAME>
Jul 30 00:00:43 rpi dnsmasq[571]: reply skypedataprdcolweu02.cloudapp.net is 52.114.74.43
`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions