quicksheet-sysmon

Live system monitor extension for QuickSheet — CPU, RAM, disk usage, and uptime directly in your spreadsheet cells.

What it looks like

🟢 CPU    12.3%  [██░░░░░░░░░░░░░░░░░░]   8 cores
🟡 RAM    54.2%  [██████████░░░░░░░░░░]   8.7/16.0 GB
🟢 Disk   38.1%  [███████░░░░░░░░░░░░░]   190.5/500.0 GB
⏱️ Uptime  2d 5h 23m                       14:32:07

Color-coded indicators: 🟢 normal (<50%) · 🟡 warning (50-80%) · 🔴 critical (>80%). Refreshes every 2 seconds.

Install

git clone https://github.com/Deskworks/quicksheet-sysmon.git

In QuickSheet, load the extension:

ext: github:Deskworks/quicksheet-sysmon

Usage

Type any of these in a cell:

Cell value	Shows
sys: all	CPU + RAM + Disk + Uptime
sys: cpu	CPU usage only
sys: mem	Memory/RAM usage only
sys: disk	Disk usage only

How it works

• CPU: Reads /proc/stat on Linux for system-wide usage; falls back to process CPU on other platforms.
• RAM: Reads /proc/meminfo on Linux for real available memory; falls back to GC memory info.
• Disk: Uses DriveInfo for the root drive (/ or C:\).
• Uptime: Uses Environment.TickCount64 for system uptime.

All metrics are gathered using .NET BCL — zero NuGet dependencies, consistent with the QuickSheet philosophy.

Requirements

• .NET 9 SDK
• QuickSheet

Protocol

Uses the standard QuickSheet extension protocol (JSON lines on stdin/stdout):

1. Receives {"type":"init"} → registers prefix sys
2. Receives {"type":"activate", "params":["all"]} → sends cell data
3. Pushes updated metrics every 2 seconds

License

MIT