Linux
Linux administration and system notes.
- Clear spam from Postfix mail queue Remove spam messages from Postfix queue when a compromised system floods your mail server.
- APT Maintenance and Cleanup Clean up old packages, fix broken dependencies, and maintain a healthy APT system.
- Control external monitor settings with ddccontrol Adjust brightness, contrast, and color settings on external monitors via DDC/CI from the command line.
- Enable hibernate on Ubuntu Configure Ubuntu to support hibernation with proper swap setup and systemd configuration.
- Thunderbird PPA workaround for Ubuntu 24.04 Install traditional APT Thunderbird when Ubuntu forces Snap version that breaks your mailbox.
- Create Swap File on Ubuntu My love letter to swap: the first thing I do on a new VPS. Because RAM deserves a safety net.
- Server Baseline Snapshot Uttam, don't forget to run this script the first thing while taking over a server. Future you will thank present you.
- View saved WiFi password Retrieve stored WiFi password from Ubuntu/Linux using NetworkManager.