Essential Linux CLI Shortcuts and Debian Package Management
Terminal Interaction and Directory Navigation
Adjusting the terminal font size can be done quickly using Ctrl + Shift + +.
To toggle between the current working directory and the previous one, use cd -. For instance, if you navigate from /var/log to /etc/nginx using cd /etc/nginx, running cd - will instantly return you to /var/log. Executing it ...
Posted on Thu, 11 Jun 2026 18:08:52 +0000 by mickd
Fixing APT Dynamic MMap Exhaustion in Ubuntu Jammy on FreeBSD Jail
An apt update or apt full-upgrade inside an Ubuntu Jammy installation running under FreeBSD jail may abort with:
E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Start. Current value: 25165824. (man 5 apt.conf)
E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Start. Current value: 25165824. (man 5 a ...
Posted on Thu, 14 May 2026 11:02:41 +0000 by Grant Cooper
Configuring Domestic Mirrors for Ubuntu ARM Systems
Ubuntu ARM systems utilize a distinct repository named ubuntu-ports instead of the standard Ubuntu repositories. This guide demonstrates how to configure domestic mirror sources for improved downlaod speeds on ARM-based Ubuntu installations.
Understanding Ubuntu ARM Repositories
ARM architecture Ubuntu systems require the ubuntu-ports repositor ...
Posted on Mon, 11 May 2026 02:11:48 +0000 by Mightywayne