The importance of Linux permissions for files and directories

For file

1. R can read the actual contents of the file
2. W can edit the contents of the file
3. X files can be executed by the system

For directory

1. R has a list of structures that read the directory, which means you can use the LS command to view the list of contents in the directory
2. W can create new files, delete files, duplicate filenames, move file locations, etc.
3. X can enter the directory to make its working directory successful

The importance of Linux permissions for files and directories