====== Linux ======
  * [[software:os:linux:systemd|Systemd]]
  * [[software:os:linux:docker|Docker]]
  * [[software:postfix|Postfix]]
  * [[software:os:debian_cloud|Настройка Debian 8 в облаке]]
  * [[software:os:linux:swap|Swap in Linux]]
  * [[software:os:linux:shell|Shell programming]] (bash, tcsh)
  * [[software:os:linux:useful|Корисні програми]] - перекладач тощо
  * [[software:os:linux:flatpak_install|Flatpak install]]
  * [[software:os:linux:chrony|Chrony]]
  * [[software:os:linux:ssh|SSH]]
  * [[software:os:tick|TICK]] - Telegraf, InfluxDB, Chronograf, Kapacitor
  * [[software:os:linux:alpine|Alpine Linux]]
  * [[software:os:linux:lighttpd|Lighttpd]]
===== Налаштування =====
  * [[software:os:linux:kde:setup|KDE initial setup]]
  * [[software:os:linux:kde:browsers|KDE setup different default browsers]]
  * [[software:os:linux:shell:setup|Shell configuration]] (bash)
  * [[software:jetbrains:pycharm|PyCharm]]
  * [[software:os:linux:kde:fix_icons|How to fix icons not showing in quick start]]
  * [[software:os:linux:additional_repos|How to add 3rd party repository in Ubuntu]]
  * [[software:os:linux:nftables|Новий фаєрвол Nftables]]
  * [[software:os:linux:server:setup|Налаштування сервера]]
  * [[software:os:linux:g213|Налаштування клавіатури Logitech G213]]
  * [[software:os:linux:sound_blaster_x4|Налаштування звукової карти Sound Blaster X4]]
  * [[software:os:linux:kde:zanshin|Zanshin]] to-do list manager for KDE
===== Redhat-specific =====
  * [[software:os:linux:fedora:setup|Початкове налаштування Fedora Workstation KDE 38]]
  * [[software:os:linux:al2023|Amazon Linux 2023]]
  * [[https://linuxiac.com/epel-repo-installation-and-usage-on-linux/|EPEL Repo Explained: Installation and Usage on Linux]]


====== Безпека ======
  * [[https://linux-audit.com/postfix-hardening-guide-for-security-and-privacy/|Postfix Hardening Guide for Security and Privacy]]
  * [[https://linux-audit.com/granting-temporary-access-to-servers-using-signed-ssh-keys/|Granting Temporary Access to Your Servers (Using Signed SSH Keys)]]
  * [[https://linux-audit.com/using-ed25519-openssh-keys-instead-of-dsa-rsa-ecdsa/|Using Ed25519 for OpenSSH keys (instead of DSA/RSA/ECDSA)]]
  * [[https://linux-audit.com/audit-and-harden-your-ssh-configuration/|OpenSSH security and hardening]]
  * [[https://medium.freecodecamp.org/how-to-get-https-working-on-your-local-development-environment-in-5-minutes-7af615770eec|How to get HTTPS working on your local development environment in 5 minutes]] - отличная статья, сделал себе локальный CA на работе по нему
  * [[https://www.linuxbabe.com/security/verify-pgp-signature-software-downloads-linux|How to Verify PGP Signature of Downloaded Software on Linux]]
  * [[https://www.linuxbabe.com/ubuntu/wireguard-vpn-server-ubuntu|Set Up Your Own WireGuard VPN Server on Ubuntu]]
  * [[https://opensource.com/article/18/7/sysadmin-guide-selinux|A sysadmin's guide to SELinux: 42 answers to the big questions]]
  * [[https://linuxiac.com/how-to-secure-ssh-server-with-sshguard/|How to Secure SSH Server with SSHGuard: A Practical Guide]]
====== Шифрування ======
  * [[https://vitobotta.com/2018/01/11/ubuntu-full-disk-encryption-manual-partitioning-uefi/Ubuntu: (almost) full disk encryption with manual partitioning - UEFI mode]] - ручний спосіб зашифрувати розділи під час установки. Треба старатись обійтись без цього, але в 23.04 інші способи зламані


====== Статьи ======
  * [[https://medium.com/@javachampions/java-is-still-free-2-0-0-6b9aa8d6d244|Java is Still Free 2.0.3]] - какие версии Джавы ставить и как в Линуксе
  * [[https://www.linuxbabe.com/mail-server/setup-basic-postfix-mail-sever-ubuntu|Build Your Own Email Server on Ubuntu: Basic Postfix Setup]] - series of articles
  * [[https://devicetests.com/fixing-vim-colors-in-tmux|Fixing Vim Colors in Tmux]]
  * [[https://linuxiac.com/how-to-install-fonts-on-linux/|How to Install Fonts on Linux: A Comprehensive Guide]]
  * [[https://linuxiac.com/how-to-keep-ssh-session-alive/|How to Keep SSH Session Alive]]
  * [[https://linuxiac.com/using-snap-command-on-linux/|Using Snap Command on Linux in Examples]]