System Settings/Task Scheduler/ru: Difference between revisions

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[[Image:Kcron-screenshot-de.png|thumb|300px|center|KCron в KDE SC 4]]
Task Scheduler is a graphical front end to the standard "cron" utility. With it, commands (or "tasks") can be run at specific times, on a certain day or date, or at specific intervals (time between execution).


[[Image:Kcron-screenshot-de.png|thumb|300px|center|Task Scheduler in Plasma 5]]


=== Использование ===
=== Использование ===


First define what variables your application needs and their values, then select your application. When this is done you select at which times your application should be run and you're all set.
В{{KDE4}}


In{{KDE4}}
В версии 4.4 '''KCron''' является модулем, который может быть найден в <menuchoice>Настройки системы -> Продвинутые -> Система -> Планировщик задач</menuchoice>. В случае отсутствия приложения, убедитесь, что установлен пакет '''kdeadmin'''.  В KDE 4.5, а также в более поздних версиях, находится в <menuchoice> Настройки системы -> Раздел Системное администрирование -> Планировщик задач</menuchoice>. В некоторых дистрибутивах выделяют '''KCron''' в отдельный пакет, поэтому, в случае его отсутствия, осуществите поиск по репозиторию.
In 4.4 '''KCron''' is a module which could be found in <menuchoice>System Settings -> Advanced -> System section -> Task Scheduler</menuchoice>. If it is not present, please check that you have the '''kdeadmin''' package installed.  In KDE 4.5 you will find it in <menuchoice>System Settings -> System Administration section -> Task Scheduler</menuchoice>. Some distros make '''KCron''' a separate package, so if it's not visible you should query your repository for it.


In{{KDE3}}
=== Adding and Modifying tasks ===
KCron can be started using <keycap>Alt+F2</keycap> or K-Menu.


=== Hints ===
* Click <menuchoice>New Task...</menuchoice> to add a new task, or "Modify" to modify an existing task. The '''Add or modify existing task''' page will be displayed.


* All the files that are modified are located in the /etc/cron directory where there are numerous files to look at.
[[Image:kcron-task-dialog.png|thumb|300px|center|The "Add or modify task" page of SystemSettings]]


* The command-line tool that allows you to have a look at the currently installed cron-jobs is {{Input|1=crontab -l}} (that's the letter L).
* Enter the command to be run. Click the folder icon to choose it from a dialog.


[[Category:System]]
* Enter a comment (optional). This should be descriptive, explaining what the task will do as the command may not always be obvious.
[[Category:KDE3]]
 
* 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 <menuchoice>OK</menuchoice>. The task will be added and scheduled if enabled.
 
{{Tip|Click <menuchoice>Run Now</menuchoice> 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 letter
** 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.
 
=== Подсказки ===
 
* Все модифицированные файлы расположены в папке /etc/cron, где находятся многочисленные файлы в которых придётся посмотреть.
 
* Инструмент командной строки, позволяющий посмотреть на текущее установленное задание Cron, является {{Input|1=crontab -l}} (это буква L).
 
==More Information==
 
* [https://docs.kde.org/stable5/en/kdeadmin/kcontrol5/kcron/index.html KDE official documentation]
* [https://en.wikipedia.org/wiki/Cron Cron] (Wikipedia)
* [https://wiki.archlinux.org/index.php/cron Cron] (Arch Linux wiki)
 
[[Category:Система/ru]]

Latest revision as of 08:30, 1 June 2019

Other languages:

Основная информация

KCron - инструмент для регулярного выполнения приложений в фоне. Это графический интерфейс к команде Cron.

KCron стандартный инструмент, поставляемый внутри в рабочей среды KDE.

Task Scheduler is a graphical front end to the standard "cron" utility. With it, commands (or "tasks") can be run at specific times, on a certain day or date, or at specific intervals (time between execution).

Task Scheduler in Plasma 5

Использование

В

В версии 4.4 KCron является модулем, который может быть найден в Настройки системы -> Продвинутые -> Система -> Планировщик задач. В случае отсутствия приложения, убедитесь, что установлен пакет kdeadmin. В KDE 4.5, а также в более поздних версиях, находится в Настройки системы -> Раздел Системное администрирование -> Планировщик задач. В некоторых дистрибутивах выделяют KCron в отдельный пакет, поэтому, в случае его отсутствия, осуществите поиск по репозиторию.

Adding and Modifying tasks

  • Click New Task... to add a new task, or "Modify" to modify an existing task. The Add or modify existing task page will be displayed.
The "Add or modify task" page of SystemSettings
  • 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 OK. The task will be added and scheduled if enabled.

Tip

Click Run Now 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.

  • The value the variable will contain. This can be a number or string.
  • Enter a brief description of the variable.

Подсказки

  • Все модифицированные файлы расположены в папке /etc/cron, где находятся многочисленные файлы в которых придётся посмотреть.
  • Инструмент командной строки, позволяющий посмотреть на текущее установленное задание Cron, является 
    crontab -l
    (это буква L).

More Information

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