dnsperf and resperf

The Table

理解 bashrc 和 profile

在一般的 linux 或者 unix 系统中, 都可以通过编辑 bashrc 和 profile 来设置用户的工作环境, 很多文章对于 profile 和 bashrc 也都有使用, 但究竟每个文件都有什么作用和该如何使用呢?

首先我们来看系统中的这些文件, 一般的系统可能会有。

The Type Of Service (TOS) bits are a set of four-bit flags in the IP header. When any one of these bit flags is set, routers may handle the datagram differently than datagrams with no TOS bits set. Each of the four bits has a different purpose and only one of the TOS bits may be set at any time, so combinations are not allowed. The bit flags are called Type of Service bits because they enable the application transmitting the data to tell the network the type of network service it requires.

Node.js is an open-source, cross-platform, JavaScript run-time environment that executes JavaScript code outside of a browser.