When we try the linux system, we need to delete a file, we can try the rm command to delete it quickly.
When we use a linux system, we can quickly delete a folder through the rm command line.
Open the command line tool in linux, you can use the firewall-cmd command line tool to quickly close the specified port.
Open the Linux command line program and use the firewall-cmd command to quickly open the specified port number.
Open the linux command line tool, use the firewall-cmd command line tool to quickly open the specified port, and automatically close after restarting.