In the Linux environment, when a file needs to be used in multiple places, in order to reduce the overhead of the file occupying memory resources, you can create a soft link to the file to solve this problem.
1. File soft link creation
Command: ln -s filename [source file] filename [soft link file]
2. Create soft links for all files under the folder
Command: ln -s folder [source folder] soft link path [soft link path] -r