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MX on Linux: Difference between revisions
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You might expect <code>sudo systemctl disable fake-hwclock.service</code> (or remove the service, and modify the scripts that call it) could ensure the computer (if online) has to get a time found on the internet (NTP). Nothing is as simple as it might seem! | You might expect <code>sudo systemctl disable fake-hwclock.service</code> (or remove the service, and modify the scripts that call it) could ensure the computer (if online) has to get a time found on the internet (NTP). Nothing is as simple as it might seem! | ||
===Commands to start, stop, or restart (stop and start in one command) MX as a service=== | ===Commands to check, start, stop, or restart (stop and start in one command) MX as a service=== | ||
You will need to start (or restart) MX after you have defined (or redefined) the service as instructed above. The full set of commands to use with this service are at [[Raspberry_Pi_Image#systemctl_commands|systemctl_commands]], here I simply repeat the basic commands that can be used with any service (start, stop, and restart). | You will need to start (or restart) MX after you have defined (or redefined) the service as instructed above. The full set of commands to use with this service are at [[Raspberry_Pi_Image#systemctl_commands|systemctl_commands]], here I simply repeat the basic commands that can be used with any service (status, enable, disable, start, stop, and restart). | ||
Don't forget you may need to type <code>sudo systemctl daemon-reload</code> to tell "systemd" that it needs to reload all service definitions whenever either one has changed, or a new one has been added. | |||
In all these commands, '''just replace [service_name] with ''cumulusmx''''' (or enter the name of another service). | In all these commands, '''just replace [service_name] with ''cumulusmx''''' (or enter the name of another service). | ||
* <code>sudo systemctl status [service_name]</code> | |||
* sudo systemctl | ** (displays whether named service has started, whether it has failed, whether it has stopped, also whether enabled, extra information will be added should status change) | ||
* | ** type the single character "q" to quit updating status display and return to prompt | ||
* sudo systemctl | * <code>sudo systemctl enable [service_name]</code> | ||
** (typed just once, and service named will automatically start when your Linux computer is booted) | |||
** the confirmation message says a link has been created | |||
* <code>sudo systemctl disable [service_name]</code> | |||
** (used when you don't want an automatic restart of the named service) | |||
* <code>sudo systemctl start [service_name]</code> | |||
** (will start the named service) | |||
* <code>sudo systemctl stop [service_name]</code> | |||
** (will stop the named service) | |||
** Closing MX with "cumulusmx" as the named service this way does a proper shutdown | |||
* <code>sudo systemctl restart [service_name]</code> | |||
** (issues a stop, then start, command to named service) | |||
** You can upgrade MX by installing new files over the existing ones, while MX is left running, and then use this command to pick up new release with minimum downtime. | |||