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Systemd presented as SysV-Init and Upstart alternative

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Linux

In his "Rethinking PID 1" blog post, open source developer Lennart Poettering, who is known for his work on Avahia and Pulseaudio, has announced "Systemd", an alternative to SysV-Init and the Init system Upstart. Upstart is used in a lot of modern Linux distributions to execute or launch all of the things and services required for operation when the system is booted.

In a very detailed blog entry, Poettering discusses the problems of current Init systems and explains how Systemd, which is still very experimental and currently only available via Git, is going to make things better. For the system to be launched as quickly as possible, he argues that the Init system should only execute what is absolutely necessary and take care of as many tasks as possible in parallel in order to use resources efficiently. Furthermore, services should only be launched when they are needed – as is done with (x)inetd, which automatically launches server services such as SSH, Telnet and Webmin when a specific port is accessed.

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