[Linux] Bash ethtool Uso: Manage network device parameters

Overview

The ethtool command is a powerful utility in Linux used to query and control network device driver and hardware settings. It allows users to retrieve information about network interfaces, configure settings, and diagnose network issues.

Usage

The basic syntax of the ethtool command is as follows:

ethtool [options] [arguments]

Common Options

• -s, --set-priv-flags: Set private flags for the device.
• -i, --driver: Display driver information for the specified device.
• -p, --identify: Blink the LED on the specified device for identification.
• -t, --test: Run self-tests on the specified device.
• -a, --show-pause: Show pause frame settings.
• -S, --statistics: Display statistics for the specified device.

Common Examples

Here are some practical examples of using the ethtool command:

1. Display information about a network interface:

   ethtool eth0
   

2. Show driver information for a specific device:

   ethtool -i eth0
   

3. Blink the LED on a network interface for identification:

   ethtool -p eth0
   

4. Display statistics for a network interface:

   ethtool -S eth0
   

5. Run self-tests on a network interface:

   ethtool -t eth0
   

Tips

• Always run ethtool with root privileges for full access to all features.
• Use man ethtool to access the manual and explore more options and detailed usage.
• Combine ethtool with other network diagnostic tools like ping or traceroute for comprehensive network troubleshooting.