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# Linux Operations Healthcheck Toolkit
This directory contains first-pass Linux diagnostics for common host checks. The scripts focus on health visibility, disk usage, service status, network troubleshooting, and lightweight reporting without making system changes.
## Diagram
``` mermaid
flowchart TD
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A["os-healthcheck"]
click A href "./" "os-healthcheck"
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```
## Scripts
- `healthcheck.sh` - consolidated host overview.
- `disk_check.sh` - threshold-based filesystem usage check.
- `service_check.sh` - service state validation for critical daemons.
- `system_report.sh` - timestamped report generation for quick evidence capture.
- `network_troubleshoot.sh` - local network, DNS, route, and connectivity checks.
## Usage
``` bash
cd infra-run/scripts/bash/os-healthcheck
./healthcheck.sh
./disk_check.sh 90
./service_check.sh sshd nginx
./system_report.sh
./network_troubleshoot.sh 8.8.8.8
```
## Notes
- The toolkit is read-only and suited to initial triage.
- It aligns with the portfolio pattern of quick pre-check and evidence collection steps.
