Five years ago, Zhiju wrote about how to reset a forgotten password in Linux (centos). At that time, it was still a centos6. Yes, record it here so that you can find it easier next time you encounter it.
To be honest, I forgot to take screenshots at first, but the early startup is similar to centos6. You can refer to: https://www.vpsok.net/12719.html
First, restart the server, and then press esc key until the system selection interface appears, press e (this step is similar to centos6)
CentOS7 forgotten password reset method
Five years ago, Zhiju wrote about how to reset a forgotten password in Linux (centos). At that time, it was still a centos6. Yes, record it here so that you can find it easier next time you encounter it.
To be honest, I forgot to take screenshots, but the early startup is similar to centos6. You can refer to: https://www.zrblog.net/12719.html
First, restart the server, and then press esc key until the system selection interface appears, press e (this step is similar to centos6)
View, open and close CentOS7 firewall
CentOS7 has been out for a few years. I personally still use the 6 series. I mainly feel that the operations of these commands have changed too much, such as the firewall view and switch. It is always a habit to memorize the 6 series commands. 8 is not far away and you cannot hold on to 6 all the time. Now I will record the firewall related commands to facilitate my own search.
View, open and close CentOS7 firewall
CentOS7 has been out for a few years. I personally still use the 6 series. I mainly feel that the operations of these commands have changed too much, such as the firewall view and switch. It is always a habit to memorize the 6 series commands. 8 is not far away and you cannot hold on to 6 all the time. Now I will record the firewall related commands to facilitate my own search.