33 lines
1.1 KiB
Bash
33 lines
1.1 KiB
Bash
#!/bin/bash
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if command -v ip &>/dev/null; then
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LOCAL_IP=$(ip addr show | grep 'inet ' | grep -v '127.0.0.1' | awk '{print $2}' | cut -d/ -f1 | head -n 1)
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elif command -v ifconfig &>/dev/null; then
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LOCAL_IP=$(ifconfig | grep 'inet ' | grep -v '127.0.0.1' | awk '{print $2}' | head -n 1)
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else
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echo "错误: 找不到 ip 或 ifconfig 命令" && exit 1
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fi
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[ -z "$LOCAL_IP" ] && echo "错误: 未能检测到本地 IP" && exit 1
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PREFIX="${LOCAL_IP%.*}"
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echo "本机 IP: $LOCAL_IP，扫描网段: $PREFIX.1-254"
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echo "------------------------------------------------------"
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# macOS: -W 单位毫秒，-S 绑定源 IP
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# Linux: -W 单位秒， -I 绑定源 IP
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# 绑定源 IP 是为了防止 VPN 劫持路由导致 ping 走错网卡、ARP 不触发
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if [ "$(uname -s)" = "Darwin" ]; then
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for i in $(seq 1 254); do
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ping -c 1 -W 1000 -S "$LOCAL_IP" "$PREFIX.$i" >/dev/null 2>&1 && echo "$PREFIX.$i 在线" &
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done
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else
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for i in $(seq 1 254); do
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ping -c 1 -W 1 -I "$LOCAL_IP" "$PREFIX.$i" >/dev/null 2>&1 && echo "$PREFIX.$i 在线" &
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done
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fi
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wait
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echo "------------------------------------------------------"
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echo "扫描完成"
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