lua 获取带宽

#!/usr/bin/lua
local socket = require("socket")
function sleep(n)
        local sleep = socket.select(nil, nil, n)
        return sleep
end
local net = {"eth0", "em1"}
local name = os.tmpname()
os.execute([[ifconfig | head -1 | cut -d‘ ‘ -f1 >]]..name)
local readName = io.open(name, "r")
local realName = readName:read("*l")
for _, var in ipairs(net) do
        if var == realName then
                file1 = io.open("/sys/class/net/em1/statistics/tx_bytes","r")
                file2 = io.open("/sys/class/net/em1/statistics/tx_bytes","r")
                break
        else
                file1 = io.open("/sys/class/net/eth0/statistics/tx_bytes","r")
                file2 = io.open("/sys/class/net/eth0/statistics/tx_bytes","r")
        end
end
local tx1 = file1:read("*l")
sleep(1)
local tx2 = file2:read("*l")
local mb = (tx2-tx1)*8/1024/1024
print(math.ceil(mb))
file1:close()
file2:close()
readName:close()
os.remove(name)

本文出自 “Art_Hero” 博客，请务必保留此出处http://curran.blog.51cto.com/2788306/1392498

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lua 获取带宽

原文：http://curran.blog.51cto.com/2788306/1392498