Apache Common Log Format

const re = new RegExp("^(\\S+) (\\S+) (\\S+) \\[([^\\]]+)\\] \"(\\S+) (\\S+) (\\S+)\" (\\d{3}) (\\d+|-)", "");
const input = "127.0.0.1 - frank [10/Oct/2023:13:55:36 -0700] \"GET /index.html HTTP/1.0\" 200 2326";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

import re

pattern = re.compile(r"^(\\S+) (\\S+) (\\S+) \\[([^\\]]+)\\] \"(\\S+) (\\S+) (\\S+)\" (\\d{3}) (\\d+|-)")
input_text = "127.0.0.1 - frank [10/Oct/2023:13:55:36 -0700] \"GET /index.html HTTP/1.0\" 200 2326"
for m in pattern.finditer(input_text):
    print(m.group(0))

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`^(\S+) (\S+) (\S+) \[([^\]]+)\] "(\S+) (\S+) (\S+)" (\d{3}) (\d+|-)`)
	input := `127.0.0.1 - frank [10/Oct/2023:13:55:36 -0700] "GET /index.html HTTP/1.0" 200 2326`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}