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Operations

Curated posts and practical notes in Operations.

Docker Compose Environment Variables Not Working: .env, env_file, Precedence, and Container Recreation

Docker Out of Disk Space: Cleaning Images, Build Cache, Logs, and Volumes

Complete rsnapshot Backup Guide: Linux, Windows Shares, NAS, and Samba

HC620 SMR Drive Turns Read-Only After Btrfs Fills Up: Safe Space Recovery and Troubleshooting

Incrementally Sync Two Large Directories with rsync: Resume and Verification Guide

tmux Keyboard Shortcuts: Windows, Panes, Sessions, and Scrollback

Buzz Self-Hosted Tutorial: Set up a private Agent workspace for Codex, Claude Code and the team

Two Btrfs Zoned Failures on an HC620: Deadlock, Read-Only Remount, and Kernel Troubleshooting

Cloudflare Tunnel Setup Guide: Expose Local Services Without Port Forwarding

Fix Antimalware Service Executable High CPU Without Disabling Defender

How to Install Joplin Server: Docker Compose Setup for Private Sync

Ubuntu 26.04 LTS GPU and Hardware Updates: CUDA, ROCm, DPC++, and More Platform Changes

Ubuntu 26.04 LTS Released: Major Desktop Updates with GNOME 50 and Linux 7.0

go2rtc with Xiaomi Camera RTSP: Feed NVR, HomeKit, and Frigate