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Practical DevOps Architecture
Practical DevOps Architecture
May 20, 2025 · Operations

Understanding Netcat (nc): Functions, Common Parameters, and UDP Connectivity Test

This article explains what netcat (nc) is, outlines its primary functions such as listening on TCP/UDP ports, scanning, file transfer and speed testing, details common command‑line options, and demonstrates how to test UDP connectivity with an example command.

LinuxNetwork ToolsUDP testing
0 likes · 3 min read
Understanding Netcat (nc): Functions, Common Parameters, and UDP Connectivity Test
NetEase Game Operations Platform
NetEase Game Operations Platform
Jan 4, 2020 · Operations

Ceph Storage Failure Recovery: Analysis and Step‑by‑Step Procedures

This article describes a real‑world Ceph storage incident caused by disk bad sectors, analyzes its impact, and presents two practical recovery methods—full disk copy with dd+nc and skipping the faulty sector during service start—along with detailed commands and post‑recovery steps.

CephFailure RecoveryLinux
0 likes · 11 min read
Ceph Storage Failure Recovery: Analysis and Step‑by‑Step Procedures