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Developer tools · #ubuntu
Ubuntu's unattended-upgrades automates security patching, but getting it right means understanding origin whitelists, reboot timing, and service blacklists. Here's how to configure it safely.
Learn how to combine APT pinning with unattended-upgrades to keep Ubuntu LTS servers stable while still receiving automatic security patches—without letting point releases override your pinned dependencies.
Use systemd-analyze to split a slow Ubuntu boot into phases, find the unit on the critical chain, and apply targeted fixes for network waits, fstab timeouts, and fsck stalls.
systemd socket activation on Ubuntu lets systemd hold a port and start your daemon only when a connection arrives — cutting idle memory use and boot time. Here's how it works, a working example, and the trade-offs.
When Ubuntu’s APT pinning blocks updates or pulls wrong package versions, a systematic diagnostic approach is needed. This guide walks through symptoms, checks, fixes, and when to seek help, ensuring you maintain a secure, up‑to‑date system.
Learn how to use Netplan’s try command to test network changes on Ubuntu safely, with a worked VLAN example and notes on limitations.
Learn how to use Ubuntu's Netplan to safely configure static IPs and network interfaces without risking a remote SSH lockout using the 'try' mechanism.
Learn how to use Ubuntu's ZFS root filesystem to create atomic snapshots, allowing you to instantly roll back your entire OS after a failed update or configuration error.
Enable Ubuntu’s AppArmor, write a profile for a Python script, test it in complain mode, then enforce. Step‑by‑step instructions, trade‑offs, and best practices are covered.
python