To add a new record for crontab press the 'Add' button, select 'A scheduled task that will launch at a frequency'. And press 'OK'
You are then presented with a window where you can select 'Basic' and 'Advanced' view.
If you want to add a simple task you do not need to care about templates, they are just in case you want to add similar tasks later.
In 'Task title' you select the title for your task, this is saved as a comment in the crontab file and does not affect anything. This is just for this tool.
The 'Select' button is for selecting an icon for your task, this is also just for this tool.
The 'Run' box is where you put your command. As an example 'ls'.
The 'Every' combobox is for selecting how often this task should be executed. If the provided options are not enough you have to create a timeexpression manually in the 'Advanced' tab.
The 'No output' checkbox adds a '>/dev/null 2>&1' to the record, this hides any output the command may have produced. Otherwise you would get an email every time it is run.
Here you have a box for every field in the crontab record. You should now crontab to use this, but you can click the titles for some help on creating the expressions.
If you click the 'minute' button you get a form showing some radiobuttons:
- Happends all minutes
- Happends every: [ ] minutes, means if you put in '2' it would happend at 0,2,4,6,8... if you put in '3': 0,3,6,9,12..
- Happends from minute [ ] to minute [ ], if you put in 20 and 30 it would happend every minute from 20 to 30(20,21..29.30)
- Happends at the [ ] th minute, means it will only happend at that minute.
The other expression changes as you select radiobutton, you may click that radiobutton and create an expression yourself. Like combining expressions as: 20-30\2, which means every other minute from 20-30: (20,22,24,26,28,30)