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This article mainly introduces the relevant knowledge of "how Alpine Linux manages the init system". The editor shows you the operation process through the actual case. The operation method is simple, fast and practical. I hope this article "how Alpine Linux manages the init system" can help you solve the problem.

Alpine Linux uses the same OpenRCinit system as Gentoo. Use commands such as "rc-update", "rc-status", "rc-service", "openrc" to manage init systems

Rc-update

Rc-update is mainly used to add or delete services at different runtime levels.

Rc-update syntax format

Usage: rc-update [options] add [...] or: rc-update [options] del [...] or: rc-update [options] [show [...]] Options: [asuChqVv]-a,-- all Process all runlevels-s,-- stack Stack a runlevel instead of a service-u,-- update Force an update of the dependency tree-h,-- help Display this help outputrc-status-C,-- nocolor Disable color output-V,-- version Display software version-v -verbose Run verbosely-q,-quiet Run quietly (repeat to suppress errors)

Use an example

$rc-update add docker boot # add a service $rc-update del docker boot # delete a service rc-status

Rc-status is mainly used for state management at the run level.

Rc-status syntax format

Usage: rc-status [options]... or: rc-status [options] [- a |-c |-r |-s |-u] Options: [aclrsuChqVv]-a,-- all Show services from all run levels-c,-- crashed Show crashed services-l,-- list Show list of run levels-r,-- runlevel Show the name of the current runlevel-s,-- servicelist Show servicelist-u,-- unused Show services not assigned to any runlevel-h -help Display this help output-C,-- nocolor Disable color output-V,-- version Display software version-v,-- verbose Run verbosely-q,-- quiet Run quietly (repeat to suppress errors)

Use an example

$rc-status # check the status of the default runlevel $rc-status-a # check the status of all runlevels rc-service

Rc-service is primarily used to manage the status of the service

Rc-service syntax format

Usage: rc-service [options] [- I]... or: rc-service [options]-eor: rc-service [options]-lor: rc-service [options]-rOptions: [e:ilr:INChqVv]-e,-exists tests if the service exists or not-i,-- ifexists if the service exists then run the command-I,-- ifinactive if the service is inactive then run the command-N,-- ifnotstarted if the service is notstarted then run the command-l -list list all available services-r,-- resolve resolve the service name to an init script-h,-- help Display this help output-C,-- nocolor Disable color output-V,-- version Display software version-v,-- verbose Run verbosely-q,-- quiet Run quietly (repeat to suppress errors)

Use an example

$rc-service sshd start # starts a service. $rc-service sshd stop # stop a service. $rc-service sshd restart # restart a service. Openrc

Openrc is mainly used to manage different runlevels.

Openrc syntax format

Usage: openrc [options] [] Options: [a:no:s:SChqVv]-n,-- no-stop do not stop any services-o,-- override override the next runlevel to change intowhen leaving single user or boot runlevels-s,-- service runs the service specified with the restof the arguments-S,-- sys output the RC system type, if any-h,-- help Display this help output-C,-- nocolor Disable color output-V,-- version Display software version-v,-- verbose Run verbosely-q -- Runtime defaultsysinitbootsinglerebootshutdown available for quiet Run quietly (repeat to suppress errors) Alpine Linux

Use an example

$openrc single # is changed to another single runlevel instruction $reboot # to restart the system, similar to shutdown-r now. $halt # shutdown, similar to shutdown-h now. $poweroff # shutdown the content about "how Alpine Linux manages init systems" ends here. Thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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