jesselawson

#!/usr/bin/env bash

git log --pretty=format:'' --numstat "$@" | awk 'NF' | awk '{insertions+=$1; deletions+=$2} END {print NR, "files changed,", insertions, "insertions(+),", deletions, "deletions(+)"}';

jesselawson

In this tutorial, we'll develop a script that will get all the IP addresses blocked by fail2ban on the ssh chain and then add them to an ipset that will be automatically blocked by iptables. Talk about power traffic management!

One of the most frustrating parts about running a web hosting company is the exposure to spam and bad bot traffic. At my old hosting company, I often had to scrub through IP logs to determine what traffic was legitimate and what traffic should have been blocked outright. In fact, more web hosting companies could do this but they choose not to because more traffic = more money.

jesselawson

#!/usr/bin/env bash

ipset -q flush ipsum

ipset -q create ipsum hash:net

for ip in $(curl --compressed https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt 2>/dev/null | grep -v "#" | grep -v -E "\s[1-2]$" | cut -f 1); do ipset add ipsum $ip; done

# Add any IPs here that may not be in the block list yet:
ipset add ipsum 110.169.9.43

jesselawson

"""
Example 2

Introducing both kinds of comments, and using them to explain in detail the 
elements of Example 1. 
"""

# A 'comment' is code that is ignored by a language's compiler or interpreter. 
# Python ignores any line that starts with the octothorpe (`#`). 
# You might be more familiar with the term 'hash' or 'pound sign' for the # character.

jesselawson

use std::path::Path;
use std::fs::File;
use std::io::{BufRead, BufReader};
use std::io::Write;

fn parse_markdown_file(_filename: &str) {
  print_short_banner();
  println!("[ INFO ] Starting parser!");
  

jesselawson

// Code for the Fifth Checkpoint
// Tutorial: https://jesselawson.org/rust/get-started-with-rust-by-building-a-tiny-markdown-compiler/
// 
// The purpose of this checkpoint is to ensure that you have a complete copy
// of the code in the tutorial up to the checkpoint. I want you to tinker and
// explore, but to keep up with the rest of the tutorial, make sure your
// code matches this checkpoint. 

use std::path::Path;
use std::fs::File;

jesselawson

// Code for the Fourth Checkpoint
// Tutorial: https://jesselawson.org/rust/get-started-with-rust-by-building-a-tiny-markdown-compiler/
// 
// The purpose of this checkpoint is to ensure that you have a complete copy
// of the code in the tutorial up to the checkpoint. I want you to tinker and
// explore, but to keep up with the rest of the tutorial, make sure your
// code matches this checkpoint. 

fn parse_markdown_file(_file: &str) {
  println!("[ INFO ] Trying to parse {}...", _file);

jesselawson

// Code for the Third Checkpoint
// Tutorial: https://jesselawson.org/rust/get-started-with-rust-by-building-a-tiny-markdown-compiler/
// 
// The purpose of this checkpoint is to ensure that you have a complete copy
// of the code in the tutorial up to the checkpoint. I want you to tinker and
// explore, but to keep up with the rest of the tutorial, make sure your
// code matches this checkpoint. 

fn parse_markdown_file() {
  // This will be created in Chapter 4

jesselawson

// Code for the Second Checkpoint
// Tutorial: https://jesselawson.org/rust/get-started-with-rust-by-building-a-tiny-markdown-compiler/
// 
// The purpose of this checkpoint is to ensure that you have a complete copy
// of the code in the tutorial up to the checkpoint. I want you to tinker and
// explore, but to keep up with the rest of the tutorial, make sure your
// code matches this checkpoint. 

fn get_version() -> u16 {
    1000

jesselawson

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main(void) {
  // sizeof(char) is always 1, but we have it here
  // for instructional purposes
  char* full_name = malloc(sizeof(char)*strlen("Jesse Lawson")+1);

  strcpy(full_name, "Jesse Lawson");