164 lines
6.6 KiB
Markdown
164 lines
6.6 KiB
Markdown
cinit is a fast, small and simple init with support for profiles
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## Why should I use cinit?
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* To significant speedup the startup process
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* To use highest level of parallelisation at startup
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* To benefit from real dependencies (so called ***needs*** and ***wants***)
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* To easily create profiles that can be chosen at startup (even **before** init is started!)
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## How does cinit work?
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Cinit creates a dependency tree at startup and executes the services.
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A service can have two type of dependencies:
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* ***wants*** describe soft dependencies (i.e. it's not fatal if the wanted service fails to start)
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* ***needs*** describe hard dependencies (if the needed service fails, the depending won't be started)
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Let's have a look at an example:
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A
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(wants)
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/ \
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|------> B \ C
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| / \ / \
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^ (needs) (needs) (wants)
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| D E F
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|------<------(needs)----|
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Or in words:
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* B and C do not have dependencies
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* They will be started at the beginning
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* A wants B and C
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* A waits until B and C are executed and started afterwards,
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independently of the success of B and C
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* A will also be started, if B and C fail to start.
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* D needs B
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* D will only be started, if B is successfully started
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* E needs B and C
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* E will only be started, if both B and C are successfully started
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* F wants C and needs B
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* F will only be started, if B is successfully started
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* F waits until C is started and is started afterwards
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## Getting cinit
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### Development versions
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You can get the latest (development) version via git:
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git clone git://git.schottelius.org/cLinux/cinit.git
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Additionally, the following other git ressources are available:
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* [Gitweb](http://git.schottelius.org/?p=cLinux/cinit.git;a=summary).
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* [Mirror at github](http://github.com/telmich/cinit)
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### Archives
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* [[cinit-0.3pre14.tar.bz2|archives/cinit-0.3pre14.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre14/))
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[[changes|browse_source/cinit-0.3pre14/CHANGES]]
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* [[cinit-0.3pre13.tar.bz2|archives/cinit-0.3pre13.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre13/))
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[[changes|browse_source/cinit-0.3pre13/CHANGES]]
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* [[cinit-0.3pre12.tar.bz2|archives/cinit-0.3pre12.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre12/))
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[[changes|browse_source/cinit-0.3pre12/CHANGES]]
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* [[cinit-0.3pre11.tar.bz2|archives/cinit-0.3pre11.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre11/))
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[[changes|browse_source/cinit-0.3pre11/CHANGES]]
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* [[cinit-0.3pre10.tar.bz2|archives/cinit-0.3pre10.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre10/))
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[[changes|browse_source/cinit-0.3pre10/CHANGES]]
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* [[cinit-0.3pre9.tar.bz2|archives/cinit-0.3pre9.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre9/))
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[[changes|browse_source/cinit-0.3pre9/CHANGES]]
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* [[cinit-0.3pre8.tar.bz2|archives/cinit-0.3pre8.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre8/))
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[[changes|browse_source/cinit-0.3pre8/CHANGES]]
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* [[cinit-0.3pre7.tar.bz2|archives/cinit-0.3pre7.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre7/))
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[[changes|browse_source/cinit-0.3pre7/CHANGES]]
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* [[cinit-0.3pre6.tar.bz2|archives/cinit-0.3pre6.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre6/))
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[[changes|browse_source/cinit-0.3pre6/CHANGES]]
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* [[cinit-0.3pre5.tar.bz2|archives/cinit-0.3pre5.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre5/))
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[[changes|browse_source/cinit-0.3pre5/CHANGES]]
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* [[cinit-0.3pre4.tar.bz2|archives/cinit-0.3pre4.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre4/))
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[[changes|browse_source/cinit-0.3pre4/CHANGES]]
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* [[cinit-0.3pre3.tar.bz2|archives/cinit-0.3pre3.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre3/))
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[[changes|browse_source/cinit-0.3pre3/CHANGES]]
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* [[cinit-0.3pre2.tar.bz2|archives/cinit-0.3pre2.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre2/))
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[[changes|browse_source/cinit-0.3pre2/CHANGES]]
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* [[cinit-0.3pre1.tar.bz2|archives/cinit-0.3pre1.tar.bz2]]
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([browse source](browse_source/cinit-0.3pre1/))
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[[changes|browse_source/cinit-0.3pre1/CHANGES]]
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* [[cinit-0.2.1.tar.bz2|archives/cinit-0.2.1.tar.bz2]]
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([browse source](browse_source/cinit-0.2.1/))
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[[changes|browse_source/cinit-0.2.1/CHANGES]]
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* [[cinit-0.2.tar.bz2|archives/cinit-0.2.tar.bz2]]
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([browse source](browse_source/cinit-0.2/))
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[[changes|browse_source/cinit-0.2/CHANGES]]
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* [[cinit-0.1.tar.bz2|archives/cinit-0.1.tar.bz2]]
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([browse source](browse_source/cinit-0.1/))
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[[changes|browse_source/cinit-0.1/CHANGES]]
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* [[cinit-0.0.8.tar.bz2|archives/cinit-0.0.8.tar.bz2]]
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([browse source](browse_source/cinit-0.0.8/))
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[[changes|browse_source/cinit-0.0.8/CHANGES]]
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* [[cinit-0.0.7.tar.bz2|archives/cinit-0.0.7.tar.bz2]]
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([browse source](browse_source/cinit-0.0.7/))
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[[changes|browse_source/cinit-0.0.7/CHANGES]]
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* [[cinit-0.0.6.tar.bz2|archives/cinit-0.0.6.tar.bz2]]
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([browse source](browse_source/cinit-0.0.6/))
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[[changes|browse_source/cinit-0.0.6/CHANGES]]
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* [[cinit-0.0.5.tar.bz2|archives/cinit-0.0.5.tar.bz2]]
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([browse source](browse_source/cinit-0.0.5/))
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[[changes|browse_source/cinit-0.0.5/CHANGES]]
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* [[cinit-0.0.4.tar.bz2|archives/cinit-0.0.4.tar.bz2]]
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([browse source](browse_source/cinit-0.0.4/))
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[[changes|browse_source/cinit-0.0.4/CHANGES]]
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## Support
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### Documentation
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The documentation is currently spread all over the ***doc/*** directory
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within the tarball and is being cleaned up. Additionally there
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are two presentations available:
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* [[2005-10-22: (German) speech at Technophil|software/cinit/speeches/2005-10-22]]
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* [[2005-08-06: (German) online speech|software/cinit/speeches/2005-08-06]]
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### Mailing list
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There is a general
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[cinit mailing list](http://l.schottelius.org/mailman/listinfo/cinit) available.
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### IRC
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You can join the development ***IRC channel***
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[#cLinux on irc.freenode.org](irc://irc.freenode.org/#cLinux).
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## Related websites
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* BSD init systems (same codebase):
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* <a href="http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/init/">FreeBSD</a>,
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* <a href="http://cvsweb.netbsd.org/bsdweb.cgi/src/sbin/init/">NetBSD</a>,
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* <a href="http://www.openbsd.org/cgi-bin/cvsweb/src/sbin/init/">OpenBSD</a>
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* <a href="http://www.initng.org/">initng</a>
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* <a href="http://www.fefe.de/minit/">minit</a>
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* <a href="http://smarden.org/runit/">runit</a>
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* <A HREF="http://www.atnf.csiro.au/~rgooch/linux/boot-scripts/">simpleinit</a>
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* <a href="ftp://ftp.cistron.nl/pub/people/miquels/sysvinit/">sysvinit</a>
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* <A HREF="http://www.netsplit.com/blog/work/canonical/upstart.html">upstart</A>
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[[!tag unix]]
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