KCron
Informazioni generali
KCron è uno strumento per eseguire automaticamente applicazioni ad intervalli regolari. È un'interfaccia grafica per il comando Cron.
KCron è un'applicazione standard negli ambienti KDE. |
Utilizzo
In KDE 4.4 KCron è un modulo accessibile in
. Se non è presente controlla di aver installato il pacchetto kdeadmin. In KDE 4.5 lo troverai in . Alcune distro creano un pacchetto separato per KCron, dunque se non lo vedi dovresti cercare questo termine nel tuo repository.Adding and Modifying tasks
- Click to add a new task, or "Modify" to modify an existing task. The Add or modify existing task page will be displayed.
- Enter the command to be run. Click the folder icon to choose it from a dialog.
- Enter a comment (optional). This should be descriptive, explaining what the task will do as the command may not always be obvious.
- Click Enable this task to enable the task to run.
- Click Run at system bootup to enable the script to run each time the system is booted.
- Click Run every day to enable the script to run every day. This will automatically select the appropriate options.
- Using the buttons, choose when the command should be run. Not all parameters are required, those not needed may be left blank.
- Hours and Minutes are the time of day to run the task, not an interval.
- When done, click . The task will be added and scheduled if enabled.
Tip
Click
to run a task immediately after adding or modifying the task.
Removing a task
To completely remove a task, select the task from the list and click the Delete button. This will permanently remove the task.
Environment Variables
Sometimes a task or multiple tasks need a specific variable set, it must be added in the Environment Variables section. The cron utility uses its own environment, system-wide and user-specific variables are not used. Click New Variable to add a new variable definition, or Modify to change an existing variable.
- Enter the name of the variable to use. This name:
- Must consist of letters, digits, and underscore ('_') only
- Must start with a latter
- Should not be a reserved or commonly used system variable. See https://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap08.html for more information
- The value the variable will contain. This can be a number or string.
- Enter a brief description of the variable.
Suggerimenti
- Tutti i file che vengono modificati si trovano nella cartella /etc/cron dove ci sono numerosi file da guardare.
- Lo strumento a riga di comando che ti permette di vedere i cron-jobs attualmente definiti è
crontab -l
(l'ultima è la lettera L).
More Information
- KDE official documentation
- Cron (Wikipedia)
- Cron (Arch Linux wiki)