15 lines
513 B
Markdown
15 lines
513 B
Markdown
# 查看指定网卡信息
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sudo ethtool eth0
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# 查看所有网卡的接口类型
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for iface in $(ip link show | awk -F: '/^[0-9]+:/ {print $2}' | tr -d ' '); do
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echo -n "$iface: "
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sudo ethtool $iface 2>/dev/null | grep -E "Supported link modes|Port|Speed"
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done
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**关键判断点：**
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- **电口（RJ45）**：显示 `Port: Twisted Pair` 或支持 `1000baseT/Full`、`10GBASE-T` 等模式
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- **光口（Fiber）**：显示 `Port: FIBRE` 或支持 `1000baseX/Full`、`10GBASE-SR/LR` 等模式 |