Custom CronJob/Systemd Timer in IGEL OS 12

You can set timers on your IGEL OS 12 device to execute commands or to install/update apps at defined dates and times. The dates and times are specified in systemd syntax.

Menu path: System > System Customization > Custom CronJob/Systemd timer

Configuring a Timed Custom Command

1. Click to add a new timer.
   

2. Edit the data as follows and then click Confirm.

   • Name job: Display name for the timed command. It is recommended to use a name that speaks for itself.

   • User: User to run the command. The following users are available on IGEL OS 12:

     • root

     • user: A user with typical user permissions

   • Type: Select custom command action.

   • Command: Enter the command to execute.

   • Date and time for execution of job - using systemd timer syntax: Specify the date and time at which the command is to be executed. For examples, see https://www.freedesktop.org/software/systemd/man/latest/systemd.time.html#Calendar%20Events

   • Delays the timer by a randomly selected value; default of 0: This parameter is useful when the command consumes many resources, e.g. network resources, and is executed by a great number of devices. Example: If you enter 10, the command will be executed somewhere between the specified time +1 seconds and the specified time +10 seconds.

   • If hardware supports rtc wake and this option is enabled, the system will boot up to initiate the specified job / action: Please note that this feature is still experimental. The functionality depends strongly on the specific hardware and BIOS/UEFI.

Configuring a Timed Update

You can configure the timer to install or update apps on a given date and time. For this, System > Update > Action after app assignment from UMS must be set to Nothing (additional step is needed to download and activate new app(s)). For a description, see Update - App Update Settings in IGEL OS 12 .

1. Click to add a new timer.
   

2. Edit the data as follows and then click Confirm.

   • Name job: Name for the timed command. It is recommended to use a name that speaks for itself, e.g. “Update”.

   • User: Select root.

   • Type: Select update action.

   • Date and time for execution of job - using systemd timer syntax: Specify the date and time at which the command is to be executed. For examples, see https://www.freedesktop.org/software/systemd/man/latest/systemd.time.html#Calendar%20Events

   • Delays the timer by a randomly selected value; default of 0: This feature does not work with IGEL OS 12.7.0 or earlier.

   • If hardware supports rtc wake and this option is enabled, the system will boot up to initiate the specified job / action