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303 entries match these filters
- 0212 postgres/postgres: PostgreSQL source code mirror The official read-only GitHub mirror of the PostgreSQL source repository. Browse the code and history here; patches go through the project's mailing… Linux, macOS, Windows Repo Install & connect · PostgreSQL 15 Oct 2026
- 0222 Connecting to Oracle: SQL*Plus, SQLcl, EZConnect, tnsnames.ora and the listener Clients reach an Oracle database through the listener, using an Easy Connect string or a tnsnames.ora alias. Here are the formats, the… Intermediate · Cheat sheet · Linux, macOS, Windows Article Administration · Concepts & tools 15 Oct 2026
- 0228 MySQL Server source code Oracle's public GitHub repository with the source code of MySQL Server, including the server, client programs such as mysql and mysqldump, and… Linux, macOS, Windows Repo MySQL & MariaDB 15 Oct 2026
- 0229 MariaDB Server The source of MariaDB Server, the community-developed fork of MySQL started by original MySQL developers, licensed under GPLv2. Linux, macOS, Windows Repo MySQL & MariaDB 15 Oct 2026
- 0209 Fix: FATAL: password authentication failed for user PostgreSQL reached the server and found a matching pg_hba.conf rule, but the password check failed. Usually a wrong password, a role without… Intermediate · Fixes an error · Any system Article Roles & administration · Security & access 15 Oct 2026
- 0215 mysql command-line client cheat sheet The connection options, built-in commands and everyday SQL you need in the mysql (and mariadb) command-line client, on one page. Beginner · Cheat sheet · Any system Article Administration · Queries 15 Oct 2026
- 0181 Ansible concepts: inventory, modules, playbooks, idempotency and roles Ansible configures many servers over SSH from one control machine. Learn the core pieces: inventory, modules, tasks, playbooks, roles, and why runs… Beginner · Explains an idea · Linux, macOS Article Ansible 15 Oct 2026
- 0182 Your first Ansible playbook: install nginx and publish a page A complete beginner playbook that installs nginx on Debian or Ubuntu servers, starts it at boot and deploys a home page, with… Beginner · Step by step · Linux, macOS Script Ansible 15 Oct 2026
- 0183 Ansible variables, templates and handlers: configure an nginx site Use group variables, Jinja2 templates and handlers together: render an nginx server block from variables, test the config and reload nginx only… Intermediate · Step by step · Linux, macOS Script Ansible 15 Oct 2026
- 0184 Ansible Vault: keep passwords and keys encrypted in your repo Ansible Vault encrypts variable files or single values so secrets can live in Git next to your playbooks. Create, edit and rekey… Advanced · Step by step · Linux, macOS Article Ansible 15 Oct 2026