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wewetv1987-cell
wewetv1987-cellCOMMUNITY
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Linux

Diagnose Linux permissions, processes, storage, and networking issues safely.

Updated Feb 16, 2026
Search Tags:#troubleshooting#permissions#system administration#linux#ssh#cron#systemd
One-click install
npx skills add https://github.com/wewetv1987-cell/openclaw-backup --skill linux-wewetv1987-cell
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Linux
Source: https://github.com/wewetv1987-cell/openclaw-backup/tree/main/skills/linux
Command: npx skills add https://github.com/wewetv1987-cell/openclaw-backup --skill linux-wewetv1987-cell

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you operate Linux systems more safely by avoiding permission traps, silent failures, and the most common administration mistakes that waste time or cause outages.

Core Features & Use Cases

  • Permissions and ownership checks: Diagnose file mode issues, ACL surprises, SSH auth failures, and risky recursive ownership changes.
  • Process, service, and job control: Handle signals, zombies, systemd units, cron jobs, and reboot behavior without assuming commands do more than they actually do.
  • Storage, memory, and network troubleshooting: Investigate disk space mysteries, deleted-but-open files, OOM events, load spikes, and networking pitfalls with the right Linux tools.
  • Use case: A server appears full, a service will not restart cleanly, or SSH suddenly stops working; this Skill helps identify the real cause and the safe next step.

Quick Start

Use the Linux skill to diagnose a Linux system problem and explain the safest fix.

Frequently Asked Questions about Linux

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
Why does my Linux server show disk space as full when I deleted the large log files?▼

Linux disk space remains consumed by deleted-but-open files until the holding process terminates. You must identify and restart the specific holding process to release the file descriptor and free the disk space.

How do I troubleshoot SSH authentication failures caused by file permissions?▼

SSH authentication failures on Linux occur when file or directory permissions are too permissive. You must correct ownership and restrict access modes on the authorized_keys file and parent directories to restore secure access.

Why is my systemd service failing to restart cleanly after a configuration change?▼

Systemd service restart failures stem from invalid unit files or unmet dependencies. You must interpret service lifecycle details and verify process status to identify the silent failure before attempting a safe restart sequence.

How do I safely diagnose Linux memory usage and OOM events without causing an outage?▼

Diagnose Linux memory usage and OOM events by interpreting resource diagnostics with the right system tools. You must investigate load spikes carefully to identify the real cause and apply safe next steps without causing an outage.

What is the safest way to apply recursive ownership changes on a Linux filesystem?▼

Applying recursive ownership changes on a Linux filesystem risks breaking service access and triggering permission traps. You must verify access rules and avoid risky recursive changes unless absolutely necessary for system administration.

Why did my cron job stop working silently without sending any error output?▼

Cron jobs fail silently on Linux when environment variables are missing or command behavior is misinterpreted. You must verify the cron environment and service lifecycle details to ensure safe job control execution.

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