Niko Diamadis cyb3rko

Git Commit Freeze Due to GPG Lock Issues

If you encounter a problem where you cannot commit changes in Git – neither through the terminal nor via the GitHub Desktop application – the issue might be a freeze during the Git commit process. This is often caused by GPG lock issues. Below is a concise and step-by-step guide to resolve this problem.

Solution Steps

1. Check for GPG Lock Messages

Open your terminal and try to perform a GPG operation (like signing a test message). If you see repeated messages like gpg: waiting for lock (held by [process_id]) ..., it indicates a lock issue.

 Google                8.8.8.8          8.8.4.4          https://developers.google.com/speed/public-dns/
 Quad9                 9.9.9.9          149.112.112.112  https://www.quad9.net/
 Cloudflare            1.1.1.1          1.0.0.1          https://1.1.1.1/dns/
 AdGuard DNS           94.140.14.14     94.140.15.15     https://adguard-dns.io/en/public-dns.html
 Control D             76.76.2.0        76.76.10.0       https://controld.com/free-dns/
 OpenDNS Home          208.67.222.222   208.67.220.220   https://www.opendns.com/
 CleanBrowsing         185.228.168.9    185.228.169.9    https://cleanbrowsing.org/filters/
 Alternate DNS         76.76.19.19      76.223.122.150   https://alternate-dns.com/
 DNS.WATCH             84.200.69.80     84.200.70.40     https://dns.watch/index

Install psycopg2 in Mac M1

Error while installing through pip install psycopg2 looks like this:

Please add the directory containing pg_config to the PATH

or specify the full executable path with the option (...)

Reference to the solution here.

Updating expired GPG keys and their backup 🔑🔐💻

I use a GPG key to sign my git commits.

An error like this one might be a sign of an expired GPG key.

error: gpg failed to sign the data fatal: failed to write commit object

Quick examples

feat: new feature
fix(scope): bug in scope
feat!: breaking change / feat(scope)!: rework API
chore(deps): update dependencies

Commit types

build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
ci: Changes to CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
chore: Changes which doesn't change source code or tests e.g. changes to the build process, auxiliary tools, libraries

ClamAV Setup Notes

Context

ClamAV can be used in a few different ways. Most importantly, it provides the ability to scan files in realtime (on-access) or to scan the file system periodically.

I tried configuring ClamAV to both perform on-access virus scanning and to perform nightly full filesystem scanning. Using the on-access option did not prove to be very useful, however a scheduled full system scan seems to be of value.

Here is my story.

https://docs.spring.io/spring-boot/docs/current/reference/html/appendix-application-properties.html spring.kafka prefixed properties

Key	Default Value	Description
spring.kafka.admin.client-id		ID to pass to the server when making requests. Used for server-side logging.
spring.kafka.admin.fail-fast	false	Whether to fail fast if the broker is not available on startup.
spring.kafka.admin.properties.*		Additional admin-specific properties used to configure the client.
spring.kafka.admin.ssl.key-password		Password of the private key in the key store file.
spring.kafka.admin.ssl.key-store-location		Location of the key store file.

OpenSSL Cheat Sheet 🔐

Install

Install the OpenSSL on Debian based systems

sudo apt-get install openssl

	/*
	* Copyright 2025 Kyriakos Georgiopoulos
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software

	class MainActivity : ComponentActivity() {
	override fun onCreate(savedInstanceState: Bundle?) {
	super.onCreate(savedInstanceState)
	enableEdgeToEdge()
	setContent {
	SampleUiDesignForCartTheme {
	ScratchCardView()
	}
	}
	}