了解linux DISPLAY变量 [英] Understanding linux DISPLAY variable

问题描述

我是Linux新手，必须设置DISPLAY变量才能运行Java应用程序.我设法做到了这一点，并且我知道可以使用

I am new to Linux and I had to set DISPLAY variable for running a java application. Somehow I managed to do that, and I understand that display can be set using

<host>:<display>[.<screen>]

但是我正在做的是:1001.

but what I am doing is :1001.

现在，此1001是此linux的第1001个显示?一台机器上可能有这么多显示器吗?或者我的理解是错误的?

Now, this 1001 is 1001th display of this linux? Are this many display possible in a machine or my understanding is wrong?

推荐答案

X11 使用 DISPLAY 变量来标识您的显示(以及键盘和鼠标).通常在台式机上是:0 ，指的是主显示器等.

The DISPLAY variable is used by X11 to identify your display (and keyboard and mouse). Usually it'll be :0 on a desktop PC, referring to the primary monitor, etc.

如果您将SSH与X转发( ssh -X otherhost )一起使用，则它将设置为类似 localhost:10.0 的名称.这告诉X应用程序发送其输出，并从TCP端口 127.0.0.1:6010 接收输入，该端口将通过SSH转发回您的原始主机.

If you're using SSH with X forwarding (ssh -X otherhost), then it'll be set to something like localhost:10.0. This tells X applications to send their output, and receive their input from the TCP port 127.0.0.1:6010, which SSH will forward back to your original host.

是的，回想过去，瘦客户端"计算意味着 X终端，通常有数百台显示器连接到同一主机.

And, yes, back in the day, when "thin client" computing meant an X terminal, it was common to have several hundred displays connected to the same host.

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