jpedro

#!/usr/bin/env python
"""
Modification of `python -m SimpleHTTPServer` with a fallback to /index.html
on requests for non-existing files.

This is useful when serving a static single page application using the HTML5
history API.
"""

jpedro

Ed Finkler (Funkatron) asked me, in response to my recent article introducing Statamic, whether you could change Statamic's settings to serve from something other than the local disk.

I checked with Jason & Jack at Statamic, and they told me three things:

1. Statamic already has the ability (if configured a certain way) to compile all the files down to HTML. It's possible (I don't know how yet, but I know it is) to configure Nginx to serve those files directly.
2. Statamic v1 has a static site generator built-in, and v2 will get one soon.
3. Since Statamic's .env file effects the behavior of its Laravel core, you can change the cache driver that your Statamic app is using just like you would in any Laravel app. Just add a CACHE_DRIVER key in .env file and set it to any of the options: 'file', the default; 'database'; 'memcached'; 'redis';

jpedro

Generate ssl certificates with Subject Alt Names on OSX

Open ssl.conf in a text editor.

Edit the domain(s) listed under the [alt_names] section so that they match the local domain name you want to use for your project, e.g.

DNS.1   = my-project.dev

Additional FQDNs can be added if required:

jpedro

#!/usr/bin/env bash

cert_file="$1"
key_file="$2"

CERT_CONF="$(dirname "${BASH_SOURCE[0]}")"/cert-conf.cfg

if [ ! -f "$cert_file" ]; then

	cert_hostname="$3"

jpedro

#!/usr/bin/env sh

VBOX_LATEST_VERSION=$(curl http://download.virtualbox.org/virtualbox/LATEST.TXT)

wget -c http://download.virtualbox.org/virtualbox/${VBOX_LATEST_VERSION}/VBoxGuestAdditions_${VBOX_LATEST_VERSION}.iso -O /tmp/VBoxGuestAdditions_${VBOX_LATEST_VERSION}.iso
sudo mkdir -p /media/guestadditions ; sudo mount -o loop /tmp/VBoxGuestAdditions_${VBOX_LATEST_VERSION}.iso /media/guestadditions
sudo /media/guestadditions/VBoxLinuxAdditions.run
sudo umount /media/guestadditions && sudo rm -rf /tmp/VBoxGuestAdditions_$VBOX_VERSION.iso /media/guestadditions

echo 'You may safely ignore the message that reads: "Could not find the X.Org or XFree86 Window System."'

jpedro

# Add field
echo '{"hello": "world"}' | jq --arg foo bar '. + {foo: $foo}'
# {
#   "hello": "world",
#   "foo": "bar"
# }

# Override field value
echo '{"hello": "world"}' | jq --arg foo bar '. + {hello: $foo}'
{

jpedro

#!/usr/bin/env bcc-py
#
# topwaits      Show longest off-cpu waits per-stack
#
# Copyright 2019 Facebook, Inc.
# Copyright 2016 Netflix, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")
#
# 13-Jan-2016	Brendan Gregg	Wrote offcpu profiler
# 27-Nov-2019   Domas Mituzas   Gutted most of profiling part and left stall detector

jpedro

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

jpedro

[core]
airflow_home = /etc/airflow
dags_folder = /home/airflow/gcs/dags
base_log_folder = /home/airflow/gcs/logs
plugins_folder = /home/airflow/gcs/plugins
remote_logging = True
remote_log_conn_id = google_cloud_default
remote_base_log_folder = gs://asia-northeast1-settings-te-xxxxxxxx-bucket/logs
executor = CeleryExecutor
dags_are_paused_at_creation = False

jpedro

#!/usr/bin/env bash
### SYNOPSIS
###     Generates all CIDR ranges from an initial CIDR split by subnet MASK
###
### USAGE
###     cidrs <CIDR> <MASK>
###
### EXAMPLE
###     cidrs 10.240.0.0/21 /25
###