Let's see how to display yesterday's date with the date command.
On MacOS, we pass the following command:
date -v -1d +'%Y-%m-%d'
On Linux:
date -d 'yesterday' +'%Y-%m-%d'
date -v -1d +'%Y-%m-%d'
date -d 'yesterday' +'%Y-%m-%d'
When we use ssh public key authentication, we usually add relevant settings in ~/.ssh/config. If some are used by the company or at home, can multiple configs be used? In fact, it is possible. We can use git to load the company-shared, version-controlled config through Include.
rsnapshot is a rsync-based tool that can perform snapshot incremental backups. However, we installed which rsnapshot in CentOS. Why is there no such command? There is no way to install it with yum install rsnapshot?
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.
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