https://uclab.dev/linux/index.html System administration, shell scripting, and infrastructure management — mostly from the trenches of a daily-driver Arch Linux setup and the homelab. Containers From Scratch Apr 15, 2026 Running Liz Rice containers-from-scratch on Ubuntu Noble with cgroups v2 — what breaks and how to fix it. Full article » Vault on a Synology NAS and Migrating Secrets Apr 4, 2026 Running HashiCorp Vault on a Synology NAS with Docker and Migrating Secrets Full article » Tmux Multiple Panes Mar 30, 2026 Sending the Same Command to Multiple Panes/Windows in tmux Hugo en Wed, 15 Apr 2026 08:02:44 +0000 https://uclab.dev/linux/containers-from-scratch/index.html Wed, 15 Apr 2026 08:02:44 +0000 https://uclab.dev/linux/containers-from-scratch/index.html Running Liz Rice containers-from-scratch on Ubuntu Noble with cgroups v2 — what breaks and how to fix it. https://uclab.dev/linux/vault-migrate/index.html Sat, 04 Apr 2026 11:24:04 +0000 https://uclab.dev/linux/vault-migrate/index.html Running HashiCorp Vault on a Synology NAS with Docker and Migrating Secrets https://uclab.dev/linux/tmux-multiple-panes/index.html Mon, 30 Mar 2026 09:01:36 +0000 https://uclab.dev/linux/tmux-multiple-panes/index.html Sending the Same Command to Multiple Panes/Windows in tmux https://uclab.dev/linux/bash-scripting-logical-operators/index.html Fri, 13 Mar 2026 14:32:22 +0000 https://uclab.dev/linux/bash-scripting-logical-operators/index.html AND: && Run the second command only if the first succeeds: mkdir mydir && cd mydir git pull && echo "Pull successful" OR: || Run the second command only if the first fails: cd mydir || mkdir mydir command -v docker &>/dev/null || sudo apt install docker Chaining && and || are your bread and butter. They check exit codes. This is why exit codes matter - they drive conditional execution. cd project || mkdir project && cd project ./run-tests && ./deploy || echo "Tests failed!" The [[]] Test command - Security Critical “Single brackets are a security vulnerability. Double brackets. Always. No exceptions.”* https://uclab.dev/linux/bash-scripting/index.html Fri, 13 Mar 2026 07:44:42 +0000 https://uclab.dev/linux/bash-scripting/index.html Handling Defaults https://uclab.dev/linux/proc-filesystem/index.html Thu, 26 Feb 2026 09:45:25 +0000 https://uclab.dev/linux/proc-filesystem/index.html Writing to /proc/1/fd/1 — The Linux File Descriptor Trick Explained https://uclab.dev/linux/cursors-arch-linux/index.html Sat, 14 Feb 2026 10:22:24 +0000 https://uclab.dev/linux/cursors-arch-linux/index.html Installing Bibata Modern Ice Cursor Theme on Arch Linux with Hyprland https://uclab.dev/linux/fix-pgp-arch-linux/index.html Sat, 14 Feb 2026 09:19:15 +0000 https://uclab.dev/linux/fix-pgp-arch-linux/index.html A comprehensive guide to resolving invalid or corrupted PGP signature errors when installing Arch Linux with pacstrap https://uclab.dev/linux/fix-time-sync/index.html Thu, 12 Feb 2026 07:55:03 +0000 https://uclab.dev/linux/fix-time-sync/index.html Fixing Time Synchronization https://uclab.dev/linux/nvidia-hyprland/index.html Sun, 08 Feb 2026 15:22:24 +0000 https://uclab.dev/linux/nvidia-hyprland/index.html Nvidia Hyprland https://uclab.dev/linux/dual_boot/index.html Sun, 08 Feb 2026 15:03:24 +0000 https://uclab.dev/linux/dual_boot/index.html Dual Booting Arch Linux and Windows 11 with Full Encryption and Secure Boot https://uclab.dev/linux/ssh_key/index.html Sun, 08 Feb 2026 11:38:40 +0000 https://uclab.dev/linux/ssh_key/index.html Setting Up SSH Keys for GitHub on Arch Linux https://uclab.dev/linux/path_bash_script/index.html Tue, 03 Feb 2026 09:35:19 +0100 https://uclab.dev/linux/path_bash_script/index.html Path bash script https://uclab.dev/linux/sysinfo_bash_script/index.html Mon, 02 Feb 2026 18:43:54 +0100 https://uclab.dev/linux/sysinfo_bash_script/index.html Building a Simple System Information Script in Bash https://uclab.dev/linux/shebang_bash_security/index.html Mon, 02 Feb 2026 17:59:04 +0100 https://uclab.dev/linux/shebang_bash_security/index.html Shebang bash security https://uclab.dev/linux/custom-root-ca-arch-linux/index.html Sun, 16 Nov 2025 10:00:52 +0100 https://uclab.dev/linux/custom-root-ca-arch-linux/index.html Installing a custom Root CA Certificate on Arch Linux https://uclab.dev/linux/archive-files-linux/index.html Wed, 12 Nov 2025 10:38:48 +0100 https://uclab.dev/linux/archive-files-linux/index.html Archiving Files with tar https://uclab.dev/linux/onedrive-rclone/index.html Sun, 09 Nov 2025 19:30:09 +0100 https://uclab.dev/linux/onedrive-rclone/index.html Onedrive Rclone https://uclab.dev/linux/pass-store/index.html Sat, 08 Nov 2025 14:13:56 +0100 https://uclab.dev/linux/pass-store/index.html Unix Password Manager https://uclab.dev/linux/mount-nfs-systemd/index.html Sat, 08 Nov 2025 14:00:24 +0100 https://uclab.dev/linux/mount-nfs-systemd/index.html Mount NFS with Systemd https://uclab.dev/linux/arch-linux-fingerprint/index.html Sat, 08 Nov 2025 13:34:27 +0100 https://uclab.dev/linux/arch-linux-fingerprint/index.html Arch Linux Fingerprint https://uclab.dev/linux/arch-linux-webex/index.html Sat, 08 Nov 2025 12:16:41 +0100 https://uclab.dev/linux/arch-linux-webex/index.html Arch Linux Webex https://uclab.dev/linux/arch-linux-secureboot/index.html Thu, 06 Nov 2025 14:12:28 +0100 https://uclab.dev/linux/arch-linux-secureboot/index.html Complete guide for setting up Arch Linux with Secure Boot using Ubuntu’s signed shim and systemd-boot on systems with locked BIOS (cannot disable Secure Boot or enroll custom keys). Prerequisites Ventoy USB with Secure Boot support enabled Official Arch Linux ISO System with Secure Boot enabled (locked BIOS) Internet connection for AUR packages Overview This setup uses: https://uclab.dev/linux/archlinux-install/index.html Mon, 03 Nov 2025 20:07:53 +0100 https://uclab.dev/linux/archlinux-install/index.html Arch-Linux install guide https://uclab.dev/linux/archlinux-chroot/index.html Sun, 02 Nov 2025 13:25:46 +0100 https://uclab.dev/linux/archlinux-chroot/index.html arch-chroot vs chroot https://uclab.dev/linux/vault-install/index.html Sun, 02 Nov 2025 12:21:27 +0100 https://uclab.dev/linux/vault-install/index.html Vault setup and configuration https://uclab.dev/linux/vault/index.html Sun, 02 Nov 2025 12:10:33 +0100 https://uclab.dev/linux/vault/index.html Hashicorp vault notes https://uclab.dev/linux/arch-linux-font-install/index.html Sun, 02 Nov 2025 10:34:22 +0100 https://uclab.dev/linux/arch-linux-font-install/index.html Install DepartureMono font ArchLinux https://uclab.dev/linux/luks_arch_linux_migration/index.html Sun, 02 Nov 2025 09:11:25 +0100 https://uclab.dev/linux/luks_arch_linux_migration/index.html Migrating /home to a new encrypted drive