wordpress:config:file-permissions

This command sets the permissions of the "wp-content" directory and all directories and files within it to 755.

Here's a breakdown of the different parts of the command:

• "chmod" is a command used to change the permissions of files and directories on Linux and other Unix-like operating systems.
• "-R" stands for "recursive" and tells the command to apply the permission changes to all files and directories within the "wp-content" directory.
• "755" is the permission mode that is being set. In Linux, each file and directory has three types of permissions: read, write, and execute. The first digit in "755" represents the owner's permissions (7 = read, write, execute), the second digit represents the group's permissions (5 = read and execute, but no write), and the third digit represents everyone else's permissions (5 = read and execute, but no write).

So this command sets the owner of the "wp-content" directory (presumably the web server) to have full permissions, while the group and other users can only read and execute, but not write. This is a common set of permissions for web files and directories.