How to clear the current command line in Linux or Mac terminal?
For example, if you typed a bunch of instructions wrongly, and you want to clear them,
Be sure to do the same as I used to, use the reverse key to kill slowly, we can use ctrl+u
Remove the entire command line directly.
If you press ctrl+u to delete the entire line command,
If you want to restore , you can press ctrl+y .
This function is very useful, but be very careful, read it first and then delete it, if you make a wrong directory, you will die miserably
Today I will talk to you about X, not iPhone X, nor X-Men, but X Window System, He is the main graphical interface display component of the current Linux system. Since it is very easy to expand and modularize, it has been used since it was established in 1986. The X Window system adopts the Client/Server architecture, which splits the application program and the display into two. The application program of X Windows is usually called X Client, and the display is the well-known X Server. The X client communicates with the X server through the X protocol (X protocol), which is an asynchronous network communication protocol.
Detect whether selinux is enabled in the system
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