fboaventura

Super Guide to the split-window tmux Subcommand (and Beyond)

Guide overview

tmux, like other great software, is deceptive. On the one hand, it's fairly easy to get set up and start using right away. On the other hand, it's difficult to take advantage of tmux's adanced power features without spending some quality alone time with the manual. But the problem with manuals is that they aren't geared toward beginners. They are geared toward helping seasoned developers and computer enthusiasts quickly obtain the

fboaventura

• 0.1. References
• 0.2. Other cheatsheets
• 0.3. Manage multiple gcloud config configurations
  • 0.3.1. Switch gcloud context with gcloud config
• 0.4. Credentials
• 0.5. info
• 0.6. projects
• 0.7. zones & regions
• 0.8. Organization
• 0.9. billing

fboaventura

#!/bin/sh
parse_yaml() {
   local prefix=$2
   local s='[[:space:]]*' w='[a-zA-Z0-9_]*' fs=$(echo @|tr @ '\034')
   sed -ne "s|^\($s\)\($w\)$s:$s\"\(.*\)\"$s\$|\1$fs\2$fs\3|p" \
        -e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p"  $1 |
   awk -F$fs '{
      indent = length($1)/2;
      vname[indent] = $2;
      for (i in vname) {if (i > indent) {delete vname[i]}}

fboaventura

"""
Django ORM Optimization Tips

Caveats:
* Only use optimizations that obfuscate the code if you need to.
* Not all of these tips are hard and fast rules.
* Use your judgement to determine what improvements are appropriate for your code.
"""

# ---------------------------------------------------------------------------

fboaventura

"""
Code adapted from and inspired by http://blog.ranman.org/cleaning-up-aws-with-boto3/.

"""
import os
import re
from datetime import datetime, timedelta
import boto3

fboaventura

#!/usr/bin/env python2

"""
    Other Repositories of python-ping
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    * https://github.com/l4m3rx/python-ping      supports Python2 and Python3
    * https://bitbucket.org/delroth/python-ping

fboaventura

Ubuntu 20.04 + Autoinstall + VirtualBox

Intro

This guide will explain how to set up a [VirtualBox][] VM running [Ubuntu 20.04][] and, using the new [autoinstall][] tool and cloud-init, install OpenSSH server, add a group and a user, who can then connect to the machine via SSH. This was done on a 2016 MacBook Pro running macOS 10.15 "Catalina" and VirtualBox 6.1.6 (with the VirtualBox Guest Additions installed).

You will also need a group name, a username, a password hash and an SSH key pair.

How Autoinstall Works

fboaventura

tmux Cheat Sheet

Table of Contents

• General Usage
• Shortcuts
• Commands
• Scripting tmux
• Configuring tmux

fboaventura

Screen Quick Reference

Basic

Description	Command
Start a new session with session name	screen -S <session_name>
List running sessions / screens	screen -ls
Attach to a running session	screen -x
Attach to a running session with name	screen -r

fboaventura

#!/bin/bash

# Load balance multiple internet connections. Requires iproute2, awk and grep.
# (C) 2016 Tobias Girstmair, isticktoit.net, GPLv2
# Also useful: speedometer -l  -r eth1 -t eth1 -m $(( 1024 * 1024 * 3 / 2 ))
# Not much user error checking is done - only pass working network connections

# script needs root to work and at least two interfaces to be useful
[ $EUID -eq 0 -a $# -ge 2 ] || {
	echo "Usage (as root): $0 iface1[:weight1] iface2[:weight2] ..." >&2