16 lines
441 B
Bash
16 lines
441 B
Bash
#!/usr/bin/env bash
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# 在 Linux 容器内执行：对指定网卡注入丢包。用法：apply-loss.sh <iface> <loss_percent>
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set -euo pipefail
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IFACE="${1:-eth0}"
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LOSS="${2:-20}"
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if ! command -v tc >/dev/null 2>&1; then
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echo "tc not found; use an image with iproute2 (e.g. nicolaka/netshoot)" >&2
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exit 1
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fi
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tc qdisc replace dev "$IFACE" root netem loss "${LOSS}%"
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echo "netem: iface=${IFACE} loss=${LOSS}%"
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tc qdisc show dev "$IFACE"
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