Syslog (RFC 5424) in JS
Parses RFC 5424 syslog messages.
Try it in the JS tester →Pattern
regexJS
^<(\d{1,3})>(\d+) (\S+) (\S+) (\S+) (\S+) (\S+) (.*)$JavaScript / ECMAScript code
jsJavaScript
const re = new RegExp("^<(\\d{1,3})>(\\d+) (\\S+) (\\S+) (\\S+) (\\S+) (\\S+) (.*)$", "");
const input = "<165>1 2023-10-11T22:14:15.003Z mymachine.example.com evntslog - ID47 - Application event";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).
How the pattern works
Captures priority, version, timestamp, hostname, app-name, procid, msgid, and message content from standard structured syslog entries.
Examples
Input
<165>1 2023-10-11T22:14:15.003Z mymachine.example.com evntslog - ID47 - Application eventMatches
<165>1 2023-10-11T22:14:15.003Z mymachine.example.com evntslog - ID47 - Application event