Skip to content

Instantly share code, notes, and snippets.

@frabert
frabert / COPYING
Last active December 21, 2023 13:35
Favicons for HN
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
@wlib
wlib / LICENSE
Last active April 30, 2024 17:07
Run a shell script with bash, line-by-line, prompted on each command. Useful for running unknown scripts or debugging. Not a secure substitute for understanding a script beforehand.
MIT License
Copyright (c) 2021 Daniel Ethridge
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

ZSH CheatSheet

This is a cheat sheet for how to perform various actions to ZSH, which can be tricky to find on the web as the syntax is not intuitive and it is generally not very well-documented.

Strings

Description Syntax
Get the length of a string ${#VARNAME}
Get a single character ${VARNAME[index]}
@bmaupin
bmaupin / open-source-sso.md
Last active October 6, 2025 09:57
Comparison of some open-source SSO implementations

⚠️ This is not maintained. Feel free to check comments and/or forks for more current options.

Background

This was created years ago; at the time I'd been a Shibboleth admin for nearly a decade but we needed something that could handle OIDC/OAuth and that explicitly supported OpenJDK. After a lot of investigation, I really liked Keycloak/Red Hat Single Sign-On. More details here: Gluu vs keycloack vs wso2 identity management

Comparison

(Items in bold indicate possible concerns)

@tuxfight3r
tuxfight3r / slapd
Last active January 27, 2025 03:58
openldap proxy to AD with TLS
#file /etc/sysconfig/slapd
# OpenLDAP server configuration
# see 'man slapd' for additional information
# Where the server will run (-h option)
# - ldapi:/// is required for on-the-fly configuration using client tools
# (use SASL with EXTERNAL mechanism for authentication)
# - default: ldapi:/// ldap:///
# - example: ldapi:/// ldap://127.0.0.1/ ldap://10.0.0.1:1389/ ldaps:///
SLAPD_URLS="ldap:/// ldaps:///"
@procrastinatio
procrastinatio / haproxy_rate_limiting.md
Created October 25, 2017 06:04
Rate limiting with HAproxy

Introduction

So HAProxy is primalery a load balancer an proxy for TCP and HTTP. But it may act as a traffic regulator. It may also be used as a protection against DDoS and service abuse, by maintening a wide variety of statistics (IP, URL, cookie) and when abuse is happening, action as denying, redirecting to other backend may undertaken ([haproxy ddos config], [haproxy ddos])

@dubcl
dubcl / megacli.md
Last active September 9, 2025 22:37
megacli command guide
@benrobot
benrobot / HashString.ps1
Created May 11, 2017 17:17
Powershell one liner to Hash a string using SHA256
new-object System.Security.Cryptography.SHA256Managed | ForEach-Object {$_.ComputeHash([System.Text.Encoding]::UTF8.GetBytes("The string to hash goes here"))} | ForEach-Object {$_.ToString("x2")} | Write-Host -NoNewline
@drmalex07
drmalex07 / README-setup-tunnel-as-systemd-service.md
Last active October 24, 2025 10:22
Setup a secure (SSH) tunnel as a systemd service. #systemd #ssh #ssh-tunnel #ssh-forward

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target