22.5. Managing Print Jobs

When a job is submitted to a printer, it is placed in the printer's queue. It is removed only when it has been successfully printed or sent to a remote server. On a system with many users or a slow printer, the queue can grow quite large if jobs are being submitted faster than they can be printed.

You can use this Webmin module to list jobs in the queue for a printer, view their contents, or delete them. To manage these tasks, complete the following steps:

1.
On the module's main page, click on the list link under the Jobs column for the printer whose queue you want to manage. This will take you to a page listing all jobs currently being printed or waiting to be printed.

2.
To view the contents of a print job, click on its size. Because most jobs are submitted in PostScript format, your browser must have a plug-in or helper application that can handle the format.

This is not possible for remote printers or on some print systems.

3.
To delete a print job, click on its ID in the first column. Or to remove all the jobs in the queue, click the Cancel all print jobs button.

The print jobs page can also be used to submit a test page to the printer for verifying from within Webmin that it is working. To do this, follow these steps:

1.
On the module's main page, click on the list link under the Jobs column for the printer on which you want to print a test page.

2.
Click on the Print Test Page button.

3.
Select either the Black and white Postscript page, Colour Postscript page, or Plain ASCII text option to use one of Webmin's built-in test pages. Or, select Any uploaded file and use the field next to it to choose a file on your system for printing.

4.
Click the Print page button to submit the chosen page to the printer. A web page showing the output from the lpr command will be displayed so that you can see if any immediate errors occurred.

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