dargslan-ethtool-check

Network interface diagnostics tool — check link speed, duplex mode, driver info, offload settings, and NIC capabilities for all interfaces.

Part of the Dargslan Linux Admin Toolkit — 108+ professional CLI tools for system administrators.

Installation

pip install dargslan-ethtool-check

Usage

# Check all network interfaces
dargslan-ethtool-check

# Check specific interface
dargslan-ethtool-check -i eth0

# Verbose with traffic stats
dargslan-ethtool-check -v

# Show only interfaces with errors
dargslan-ethtool-check --errors-only

# Summary table only
dargslan-ethtool-check --summary

# JSON output
dargslan-ethtool-check --json

What It Checks

• Link Speed & Duplex — 10/100/1000/10000 Mbps, half/full duplex
• Driver & Firmware — NIC driver name, firmware version
• Link Status — carrier detect, auto-negotiation state
• Traffic Statistics — RX/TX bytes, packets, errors, drops
• MAC Address & MTU — interface identification

Example Output

  Interface: eth0  [UP]
  MAC Address      : aa:bb:cc:dd:ee:ff
  MTU              : 1500
  Link Speed       : 1 Gbps (1000 Mbps)
  Duplex           : Full
  Driver           : virtio_net
  Link Detected    : yes
  Auto-negotiation : off

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License

MIT — dargslan.com