systemd is a suite of system management daemons, libraries, and utilities designed as a central management and configuration platform for the Linux computer operating system. Described by its authors as a basic building block for an operating system,[5] systemd primarily aims to replace the Linux init system (the first process d in user space during the Linux startup process) inherited UNIX System V and Berkeley Software Distribution (BSD). -systemd is a suite of system management daemons, libraries, and utilities designed as a central management and configuration platform for the Linux computer operating system. Described by its authors as a　basic building block　for an operating system,[5] systemd primarily aims to replace the Linux init system (the first process　d in user space during the Linux startup process) inherited　UNIX System V and Berkeley Software Distribution (BSD).