Essential Linux Commands for Setting, Monitoring and Troubleshooting Networks

Linux command line tools are essential for setting up, monitoring, and troubleshooting computer networks. Despite perceptions of being outdated, terminal skills remain crucial for system and network administration, especially as many tools lack graphical user interfaces. This article outlines 25 essential Linux commands that can assist users in diagnosing and resolving network issues. Key commands include `ping` for checking connectivity, `ip` for managing network interfaces and routing, and `tcpdump` for capturing network traffic. The `nmcli` command is highlighted for managing Wi-Fi connections, while `tc` is useful for traffic control. Additionally, tools like `traceroute`, `netstat`, and `iftop` provide insights into network paths and traffic usage. For troubleshooting, commands such as `dig` for DNS lookups and `mtr` for combined ping and traceroute functionality are recommended. The article emphasizes the importance of documenting command outputs to facilitate communication with Internet Service Providers (ISPs) during connectivity issues. Overall, mastering these commands can significantly enhance network management and troubleshooting capabilities.

- Command line skills are vital for network administration and troubleshooting.

- Essential commands include `ping`, `ip`, `tcpdump`, and `nmcli`.

- Tools like `traceroute` and `iftop` help monitor network paths and traffic.

- Documenting command outputs aids in resolving issues with ISPs.

- Understanding these commands enhances overall network management efficiency.