Tech Couch

Understanding computer storage units and transfer speeds

Making sense of Gb, GB, GiB, Gbps and GBps

A Practical Guide to Linux Disk Encryption

Keeping disk contents safe from prying eyes

Editing files with nano

Terminal file-editing made easy

Understanding bash stream redirection

Controlling the flow of data in and out of programs

Working with tar archives

...and tar.gz, tar.bz2 and tar.xz

Understanding the linux tee command

Copying stdin to multiple outputs

Protecting linux servers from malware with ClamAV and rkhunter

Finding malicious files the open source way

Creating an effective disaster recovery plan for IT infrastructure

Know what to do when things go wrong ahead of time

Dealing with pagination queries in SQL

The difficult choice behind chunking results into simple pages

Understanding postgres query plans

Making sense of postgres explanations