const regex = new RegExp('^.*\\bRSA SHA256:.*(?:\\n.*){3}', 'gm')
const str = `Oct 21 17:27:21 localhost sshd[19772]: Accepted publickey for vagrant from 192.168.2.140 port 54614 ssh2: RSA SHA256:uDsE4ecSD9ElWQ5Q0fdMsbqEzOe0Hszilv8xhU6dT6M
Oct 21 17:27:22 localhost sshd[19772]: pam_unix(sshd:session): session opened for user vagrant by (uid=0)
Oct 21 17:27:22 localhost sshd[19772]: User child is on pid 19774
Oct 21 17:27:22 localhost sshd[19774]: Starting session: shell on pts/2 for vagrant from 192.168.2.140 port 54614 id 0
Oct 21 17:27:21 localhost sshd[19772]: Accepted publickey for vagrant from 192.168.2.140 port 54614 ssh2: RSA SHA256:uDsE4ecSD9ElWQ5Q0fdMsbqEzOe0Hszilv8xhU6dT6M
Oct 21 17:27:22 localhost sshd[19772]: pam_unix(sshd:session): session opened for user vagrant by (uid=0)
Oct 21 17:27:22 localhost sshd[19772]: User child is on pid 19774
Oct 21 17:27:22 localhost sshd[19774]: Starting session: shell on pts/2 for vagrant from 192.168.2.140 port 54614 id 0
`;
// 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