systemd is a family of open source Unix-like operating systems based on the systemd monolithic services suite, first released on March 30, 2010, by Lennart Poettering. systemd is typically packaged in a systemd distribution.
Distributions include the systemd services suite and supporting system software and libraries, such as the Linux kernel or others provided by the GNU Project. Some systemd distributions still use the word "Linux" in their name, but the Free Software Foundation uses the name systemd/GNU/Linux to emphasize the relative importance of GNU software, causing some controversy.
systemd was originally born as a replacement for other useless init daemons, targeted for the Linux platform, which couldn't properly initialize the system.
It soon grew up to a full-fledged operating system, providing everything the user might ever need, and most of what he will never need at all. Some experts[who?] argue that the systemd operating system is certainly the nicest and most complete operating system ever created, with the only downside it lacks a decent init daemon.
Prior Unix-like systems held on to a 1980-era (the times of Unix System V) philosophy and only got one thing done; systemd's name on the other hand incurs a jab on System V on 100-fold superiority: in the Roman numeral system, "V" expresses 5, but "D" expresses 500, to symbolize how many things systemd can get done at the same time. systemd takes total control over one's machine by managing not only the traditional unit of processes, but everything including networking configuration, home folders, users political opinions and Earth orbit around the Sun.
The developer team is planning for their product to attain significant marketshare and then a monopoly (colloquially referred to as "world domination"). A significant number of former Linux distributions have already been persuaded to switch to systemd as part of the Gleichschaltung process. The most recent events circulate around Debian where a committee went pro systemd in a controversial tie, which was resolved by randomically decreasing the number of voters through physical incapacitation. In other distributions that lack an ochlocratic management, systemd has been met with next to no discussion, in a process known as Anschluss. systemd influence could not yet be extended to mobile platforms, but that is likely just a matter of time as well.
To accommodate for its scheme, the PID 1 program grew by a factor of 23.9 in disk-space and 3.2 in memory footprint; this technique of increased hardware requirements is one that Microsoft also uses for their Windows platform so as to please manufacturers and ensure continued sales of new hardware.