Manpages - cupsd-helper.8

cupsd-helper - cupsd helper programs (deprecated)

cups-deviced request-id limit user-id options
cups-driverd cat ppd-name
cups-driverd list request_id limit options
cups-exec sandbox-profile [ -g group-id ] [ -n nice-value ] [ -u user-id ] /path/to/program argv0 … argvN

The cupsd-helper programs perform long-running operations on behalf of the scheduler, cupsd*(8). The *cups-deviced helper program runs each CUPS *backend*(7) with no arguments in order to discover the available printers.

The cups-driverd helper program lists all available printer drivers, a subset of “matching” printer drivers, or a copy of a specific driver PPD file.

The cups-exec helper program runs backends, filters, and other programs. On macOS these programs are run in a secure sandbox.

The cups-driverd program looks for PPD and driver information files in the following directories:

      /Library/Printers
      /opt/share/ppd
      /System/Library/Printers
      /usr/local/share/ppd
      /usr/share/cups/drv
      /usr/share/cups/model
      /usr/share/ppd

PPD files can be compressed using the *gzip*(1) program or placed in compressed *tar*(1) archives to further reduce their size.

Driver information files must conform to the format defined in *ppdcfile*(5).

CUPS printer drivers, backends, and PPD files are deprecated and will no longer be supported in a future feature release of CUPS. Printers that do not support IPP can be supported using applications such as *ippeveprinter*(1).

*backend*(7), *cups*(1), *cupsd*(8), *cupsd.conf*(5), *filter*(7), *ppdcfile*(5), CUPS Online Help (http://localhost:631/help)

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