andrasbacsai

#!/bin/bash
# Script to update a firewall rule in a Hetzner Firewall with your current IP address.
# Good if you would like to restrict SSH access only for your current IP address (secure).

#################
# WARNING: This script will overwrite all rules in the firewall rules, so make sure you 
# added all the required rules.
# I use a separate firewall rule just for SSH access.
#################

aachyee

# copy of https://github.com/ZoeyVid/nginx-quic/blob/latest/Dockerfile
# syntax=docker/dockerfile:labs
FROM alpine:3.20.3 AS build
SHELL ["/bin/ash", "-eo", "pipefail", "-c"]

ARG LUAJIT_INC=/usr/include/luajit-2.1
ARG LUAJIT_LIB=/usr/lib

ARG NGINX_VER=release-1.27.4
ARG OPENSSL_VER=openssl-3.1.7+quic

trvswgnr

#!/bin/sh

print_usage() {
    echo "usage: compress_video <input_file>"
    echo "supported formats: mp4, webm, mkv, mov, avi, flv"
}

get_extension() {
    f="${1##*/}"
    case "$f" in

henryivesjones

PostgreSQL DATE, TIMESTAMP, and INTERVAL cheat sheet

Working with DATE, TIMESTAMP, and INTERVAL in PostgreSQL can be confusing. In this article I will go over the three date/time related data types, and the two most useful date/time functions: DATE_PART and DATE_TRUNC. Finally, I will provide some real life examples of how these types and functions can be used within queries.

Types

PostgreSQL Date/Time Documentation

DATE

The DATE type contains the year, month, and day of a date. It is not possible to do any type of time related functions on a DATE without first converting it to a TIMESTAMP. Subtracting two DATE values from one another results in an INT representing the # of days between.

TIMESTAMP

The TIMESTAMP type contains a year, month, day, hour, minute, second, and microsecond. This is the type that I most often use.

katzefudder

FROM openresty/openresty:1.21.4.1-1-alpine

ENV PATH=$PATH:/usr/local/openresty/luajit/bin:/usr/local/openresty/nginx/sbin:/usr/local/openresty/bin

RUN apk update \
    && apk add curl perl \
    # install nginx-lua-openresty https://opm.openresty.org/package/knyar/nginx-lua-prometheus/
    && opm get knyar/nginx-lua-prometheus \
    && mkdir -p /var/log/nginx \
    && mkdir /var/www \

bgoonz

Ultimate Resource List

• CLI Tools
• GUI Tools
• Web Tools
• Systems/Services
• Networks
• Containers/Orchestration
• Manuals/Howtos/Tutorials

dannguyen

fetch_ghstars.py: quick CLI script to fetch and collate from Github API all of a user's starred repos

• Requires Python 3.6+
• Creates a subdir 'ghstars-USERNAME' at the current working directory
• the raw JSON of each page request is saved as: 01.json, 02.json 0n.json
• A flattened, filtered CSV is also created: wrangled.csv

Example usage:

kaichao

1. switch nginx image to openresty/openresty

2. add the following to server/location (/etc/nginx/conf.d/default.conf)

   set $req_header "";
   set $resp_header "";
   header_filter_by_lua_block{ 
      local h = ngx.req.get_headers();
      for k, v in pairs(h) do
         ngx.var.req_header = ngx.var.req_header .. k.."="..v.." ";

MichaelSimons

Retrieving Docker Image Sizes

There are two metrics that are important to consider when discussing the size of Docker images.

1. Compressed size - This is often referred to as the wire size. This affects how fast/slow images can be pulled from a registry. This impacts the first run experience on machines where images are not cached.
2. Uncompressed size - This is often referred to as the size on disk. This affects how much local storage is required to support your Docker workloads.

The example commands shown below will work on Windows, MacOS, and Linux.

How to Measure the Compressed Size

lizthegrey

default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'