自己部署一个VPS流量监控Surge面板

echo "deb [trusted=yes] https://dl.cloudsmith.io/public/caddy/stable/deb/debian any-version main" | sudo tee /etc/apt/sources.list.d/caddy-stable.list

[Unit]
Description=traffic
After=network.target

[Service]
Type=simple
User=root
WorkingDirectory=/root/
ExecStart=/root/traffic.sh
Restart=on-failure
RestartSec=30s

[Install]
WantedBy=multi-user.target

#!/bin/sh

if ["$1" == "--help"];then
  cat << EOF
$0 网卡名称
--help 打印帮助菜单
EOF
fi

if [-z "$1"];then
  if ip a ; then
  interface=$(ip a | grep mtu | awk -F ':' '{print $2}' | head -n 2 | tail -n +2 | awk -F '''{print $1}')
  else
  interface=eth0
  fi
else
  interface=$1
fi

if ["$(cat /proc/uptime | awk'{print $1}'| sed's/\..*//g')" -lt "120" ]; then
  if [-n "$(cat ./all)" ]; then
    expr "$(cat ./all)" + "$(cat ./all-now)" > ./all
  else
    echo "1" > ./all
  fi
  if [-n "$(cat ./tx)" ]; then
    expr "$(cat ./tx)" + "$(cat ./tx-now)" > ./tx
  else
    echo "1" > ./tx
  fi
  if [-n "$(cat ./rx)" ]; then
    expr "$(cat ./rx)" + "$(cat ./rx-now)" > ./rx
  else
    echo "1" > ./rx
  fi
else
  if [-z "$(cat ./all)" ]; then
    echo "1" > ./all
  fi
  if [-z "$(cat ./tx)" ]; then
    echo "1" > ./tx
  fi
  if [-z "$(cat ./rx)" ]; then
    echo "1" > ./rx
  fi
fi

nohup caddy file-server --browse --listen :49155 &

calculate() {
str=<code>expr $str + 2</code>
str=<code>expr $str / 4 </code>
if [$str = 0]; then
value="$info"B
elif [$str = 1]; then
value=<code>expr $info / 1024</code>KB
elif [$str = 2]; then
value=<code>expr $info / 1024 / 1024</code>MB
elif [$str = 3]; then
value=<code>expr $info / 1024 / 1024 / 1024</code>GB
elif [$str = 4]; then
value=<code>expr $info / 1024 / 1024 / 1024 / 1024</code>TB
elif [$str = 5]; then
value=<code>expr $info / 1024 / 1024 / 1024 / 1024 / 1024</code>PB
fi
}

START_TIME=$(date +%s)

while true; do
  # 记录执行时间
  CURRENT_TIME=$(date +%s)
  TIME_PASSED=$((CURRENT_TIME - START_TIME))

  NIC_RX=$(cat "/sys/class/net/${interface}/statistics/rx_bytes")
  NIC_TX=$(cat "/sys/class/net/${interface}/statistics/tx_bytes")
  NIC=$(expr $NIC_RX + $NIC_TX)
  echo ${NIC} > ./all-now
  echo ${NIC_TX} > ./tx-now
  echo ${NIC_RX} > ./rx-now
  rx=$(cat ./rx)
  tx=$(cat ./tx)
  all=$(cat ./all)
  NIC_RX_ALL=$(expr ${NIC_RX} + ${rx})
  NIC_TX_ALL=$(expr ${NIC_TX} + ${tx})
  NIC_ALL=$(expr ${NIC} + ${all})
  str=${#NIC_RX_ALL} && info=${NIC_RX_ALL} && calculate && NIC_RX_ALL=$value
  str=${#NIC_TX_ALL} && info=${NIC_TX_ALL} && calculate && NIC_TX_ALL=$value
  str=${#NIC_ALL} && info=${NIC_ALL} && calculate && NIC_ALL=$value

  CPU_USAGE=$(top -b -n 1 | grep Cpu | awk '{print $2}' | cut -f 1 -d "%" | sed 's/\..*//g')
  CPU_SYS=$(top -b -n 1 | grep Cpu | awk '{print $4}' | cut -f 1 -d "%" | sed 's/\..*//g')
  CPU=$(expr $CPU_USAGE + $CPU_SYS)

  MEM_TOTAL=$(free -m | awk -F '[ :]+' 'NR==2{print $2}')
  MEM_USER=$(free -m | awk -F '[ :]+' 'NR==2{print $3}')
  MEM=$(expr $MEM_USER \* 100 / $MEM_TOTAL)

  clear
  echo "网卡流量监控"
  echo "----------------------------------------"
  echo "网卡: $interface"
  echo "发送: ${NIC_TX_ALL}  接收: ${NIC_RX_ALL}  总流量: ${NIC_ALL}"
  echo "CPU 使用率:${CPU}%  内存使用率: ${MEM}%"
  echo "{" > ./traffic
  echo "\"in\": \"${NIC_RX_ALL}\","  >> ./traffic
  echo "\"out\": \"${NIC_TX_ALL}\"," >> ./traffic
  echo "\"all\": \"${NIC_ALL}\"," >> ./traffic
  echo "\"cpu\": \"${CPU}%\"," >> ./traffic
  echo "\"mem\": \"${MEM}%\"," >> ./traffic
  echo "\"last_exec_time\": \"$(date '+%Y-%m-%d %H:%M:%S')\"" >> ./traffic
  echo "}" >> ./traffic

  # 休眠 10 秒钟
  sleep 10
done