Lesson 6: System Updates, Patching, and Maintenance

Both Windows and Linux release updates to fix bugs and vulnerabilities. On Windows, you use Windows Update to download patches, security fixes, and drivers. On Linux, you use the package manager (like sudo apt update && sudo apt upgrade) to pull updates from the distribution's repositories. Regular patching prevents malware exploits. For example, if a major security flaw is found, installing the patch quickly can stop viruses from exploiting it. Think of updates like safety checks for your car – skipping them leads to breakdowns.

An admin should regularly check system health. Key metrics include CPU usage, memory usage, and disk space. On Windows, Task Manager shows CPU/Memory graphs and which processes are using them. On Linux, tools like top, htop, or vmstat show similar info. Monitoring trends helps catch issues early: e.g., if disk usage is near full, add storage. Also check error logs: Windows has Event Viewer, Linux has /var/log/syslog or dmesg. These logs give clues to hardware failures or software crashes.