tty和vty在linux中有什么区别 [英] what is the difference between tty and vty in linux

问题描述

任何人都可以向我解释vty和tty之间的区别吗?

Can anyone explain me the difference between vty and tty ?

执行tty时，我得到以下提示.

I am getting the following when i execute tty .

[sce@..]# tty
/dev/pts/135

/dev/pts/135是什么?

what is /dev/pts/135 here ?

推荐答案

TTY定义:Teletypewriter最初是指现在的Linux/Unix系统上的任何终端.这也意味着Unix/Linux系统上的任何串行端口.

TTY Definition: Teletypewriter originally and now also means any terminal on Linux/Unix systems. It also means any serial port on Unix/Linux systems.

PTS定义:代表伪终端从站.

PTS Definition: Stands for pseudo terminal slave.

TTY和PTS之间的区别在于与计算机的连接类型.TTY端口是与计算机的直接连接，例如键盘/鼠标或与设备的串行连接.PTS连接是SSH连接或telnet连接.所有这些连接都可以连接到外壳程序，该外壳程序将允许您向计算机发出命令.

The difference between TTY and PTS is the type of connection to the computer. TTY ports are direct connections to the computer such as a keyboard/mouse or a serial connection to the device. PTS connections are SSH connections or telnet connections. All of these connections can connect to a shell which will allow you to issue commands to the computer.

虚拟电传打字机(VTY)是在路由器中创建的命令行界面(CLI)，用于促进通过Telnet(局域网中使用的网络协议)与守护程序的连接.要连接到VTY，用户必须输入有效的密码.

Virtual teletype (VTY) is a command line interface (CLI) created in a router and used to facilitate a connection to the daemon via Telnet, a network protocol used in local area networks. To connect to a VTY, users must present a valid password.

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