admin/sbin Folder

This Plesk folder is meant to store binary files (executables, libraries, compiled C programs) having symlinks of the same name in folder <plesk_root_dir>/admin/bin.

modules/

This Plesk folder contains a <module_name> folder for each installed module.

 

<module_name>/

This folder stores binary utilities of a particular module.

Here a module can have binaries of its back-end part that need to be executed with setuid root privileges. These binaries should be located in this folder, as Plesk stores its mod_wrapper utility here. This utility serves as a wrapper for module utilities. Symlinks of setuid binaries reference this mod_wrapper utility, so when called via a symlink, mod_wrapper finds a binary of the same name in the <plesk_root_dir>/admin/sbin folder and executes it as a utility with root access permissions.