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README.md
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README.md
@ -32,13 +32,33 @@ the idea of systemd crontab generator. Though the original C implementation of c
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from maillist is very incomplete: it doesn't support monotonic schedules (like `@daily` or `@yearly`),
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it can't parse comments and environment variable settings, etc.
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I'm not very good in C, so C implementation (while it's recommended for generators) whould take
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me ages to write, so I used Python for proof-of-concept implementation. And here comes
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**systemd-crontab-generator**.
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Hence I decided to create **systemd-crontab-generator**.
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[published]: http://lists.freedesktop.org/archives/systemd-devel/2013-August/012591.html
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[declined]: http://lists.freedesktop.org/archives/systemd-devel/2013-September/013120.html
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## History
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I'm not very good in C, so C implementation (while it's recommended for generators) whould take
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me ages to write, so at first I used Python for proof-of-concept implementation.
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Then my small home project was noticed by **[@systemd-cron][]** project and eventually was merged
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into it and evolved thanks to **Alexanre Detiste**, **Dwayne Bent** and others.
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Still I beared in mind the image of the project's future: rewrite it in systems language.
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Python, being VM-based scripting language is not the best choice for system service:
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it's slow (the slowest systemd generator ever, actually), have problems with multithreading,
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requires a lot of hacks like setgid/setuid C helper to implement crontab, etc.
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Meanwhile the [Rust][] systems language, I liked very much from the very beginning,
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[reached its 1.0][announce], so I decided to grab the moment and rewrite everything in Rust.
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The current version you are starring at is meant to be a successor of **[@systemd-cron][]**
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project, fully rewritten in Rust from ground up, while preserving experience, systemd unit
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templates and main algorithms and solutions polished in Python version by **[@systemd-cron][]** team.
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[Rust]: http://www.rust-lang.org
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[announce]: http://blog.rust-lang.org/2015/05/15/Rust-1.0.html
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## Installation
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If you are on [Archlinux][arch], install from [AUR][aur], otherwise see `PKGBUILD` file and
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@ -69,10 +89,12 @@ You were warned!
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## License
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The project is licensed under [CC-BY](http://creativecommons.org/licenses/by/4.0/).
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Don't forget to attribute if you derive from my work!
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Also, specially for [systemd-cron](https://github.com/systemd-cron), the project is licensed
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under [MIT](http://opensource.org/licenses/MIT) license for compatibility.
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The main part of a project is licensed under [MIT][].
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Crontab man page is derived from [Vixie Cron][vixie] and licensed under *Paul-Vixie's-license*.
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Don't forget to attribute if you derive from the work!
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[vixie]: https://wiki.gentoo.org/wiki/Cron#vixie-cron
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[MIT]: http://opensource.org/licenses/MIT
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## Contribution
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@ -85,6 +107,28 @@ Also check out [comments][] in AUR for current news about Arch package status.
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## Copyright
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© 2014, Konstantin Stepanov (<me@kstep.me>)
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Original **[@systemd-cron][]** project:
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- © 2013 Dwayne Bent
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- © 2013 Dominik Peteler
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- © 2014 Daniel Schaal <farbing@web.de>
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[![CC-BY](https://i.creativecommons.org/l/by/4.0/80x15.png "CC-BY")](http://creativecommons.org/licenses/by/4.0/)
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Systemd crontab generator evolution, tooling and support:
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- © 2014 Alexandre Detiste <alexandre@detiste.be>
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- © 2014 Dwayne Bent
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Original systemd crontab generator code in Python, Rust version:
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- © 2014-2015 Konstantin Stepanov <me@kstep.me>
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Crontab man-page (*man/crontab.5.in*):
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- © 1988, 1990, 1993, 1994, Paul Vixie <paul@vix.com>
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- © 1994, Ian Jackson <ian@davenant.greenend.org.uk>
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- © 1996-2005, Steve Greenland <stevegr@debian.org>
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- © 2005-2006, 2008-2012, Javier Fernández-Sanguino Peña <jfs@debian.org>
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- © 2010-2011, 2014 Christian Kastner <debian@kvr.at>
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- Numerous contributions via the Debian BTS copyright their respective authors
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Debian packaging:
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- © 2013 Shawn Landden <shawn@churchofgit.com>
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- © 2014 Alexandre Detiste <alexandre@detiste.be>
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[@systemd-cron]: https://github.com/systemd-cron/systemd-cron
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