Not sure who will use it, but I encountered it myself, because my home is a floating IP.
A software I installed can't detect that the ppp0 network card is an external network, so changing the name can trick him into successfully installing it.
1. File opening
vim /etc/ppp/peers/dsl-provider2. Add ifname eth0 in the last line
plugin rp-pppoe.so
nic-ens3
ifname eth0
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.
Htop is a free (GPL) ncurses-based program monitor tool for Linux. It is similar to top, but allows you to scroll vertically and horizontally, so you can see the full command line running on the system, And you can view them as program trees, select multiple programs and operate them.
Some people may be curious about what to do with this. Let me briefly explain my situation. The super old host cannot install HAProxy or certbo without Docker, only apache and nginx. But I need to automatically apply for and update the certificate on the host, so I let the host mount the folder on another host that can run the certbot program through NFS, so that the verification file generated by him can be directly generated on the old host /home In the /nginx/acme-challenge/.well-known/acme-challenge/ directory, the web page can be successfully verified and the certificate can be obtained. When there are a bunch of vhosts, you can all eat the same folder, instead of creating a directory for each vhost website.
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