man/cupsd-helper.8

   1 .\"
   2 .\" cupsd-helper man page for CUPS.
   3 .\"
   4 .\" Copyright 2007-2019 by Apple Inc.
   5 .\" Copyright 1997-2006 by Easy Software Products.
   6 .\"
   7 .\" Licensed under Apache License v2.0.  See the file "LICENSE" for more
   8 .\" information.
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  10 .TH cupsd-helper 8 "CUPS" "26 April 2019" "Apple Inc."
  11 .SH NAME
  12 cupsd\-helper \- cupsd helper programs (deprecated)
  13 .SH SYNOPSIS
  14 .B cups\-deviced
  15 .I request-id
  16 .I limit
  17 .I user-id
  18 .I options
  19 .br
  20 .B cups\-driverd
  21 .B cat
  22 .I ppd-name
  23 .br
  24 .B cups\-driverd
  25 .B list
  26 .I request_id
  27 .I limit
  28 .I options
  29 .br
  30 .B cups\-exec
  31 .I sandbox-profile
  32 [
  33 .I \-g
  34 .I group-id
  35 ] [
  36 .I \-n
  37 .I nice-value
  38 ] [
  39 .I \-u
  40 .I user-id
  41 ]
  42 .I /path/to/program
  43 .I argv0
  44 .I ...
  45 .I argvN
  46 .SH DESCRIPTION
  47 The \fBcupsd\-helper\fR programs perform long-running operations on behalf of the scheduler,
  48 .BR cupsd (8).
  49 The \fBcups-deviced\fR helper program runs each CUPS
  50 .BR backend (7)
  51 with no arguments in order to discover the available printers.
  52 .LP
  53 The \fBcups-driverd\fR helper program lists all available printer drivers, a subset of "matching" printer drivers, or a copy of a specific driver PPD file.
  54 .LP
  55 The \fBcups-exec\fR helper program runs backends, filters, and other programs. On macOS these programs are run in a secure sandbox.
  56 .SH FILES
  57 The \fBcups-driverd\fR program looks for PPD and driver information files in the following directories:
  58 .nf
  59
  60     \fI/Library/Printers\fR
  61     \fI/opt/share/ppd\fR
  62     \fI/System/Library/Printers\fR
  63     \fI/usr/local/share/ppd\fR
  64     \fI/usr/share/cups/drv\fR
  65     \fI/usr/share/cups/model\fR
  66     \fI/usr/share/ppd\fR
  67 .fi
  68 .LP
  69 PPD files can be compressed using the
  70 .BR gzip (1)
  71 program or placed in compressed
  72 .BR tar (1)
  73 archives to further reduce their size.
  74 .LP
  75 Driver information files must conform to the format defined in
  76 .BR ppdcfile (5).
  77 .SH NOTES
  78 CUPS printer drivers, backends, and PPD files are deprecated and will no longer be supported in a future feature release of CUPS.
  79 Printers that do not support IPP can be supported using applications such as
  80 .BR ippeveprinter (1).
  81 .SH SEE ALSO
  82 .BR backend (7),
  83 .BR cups (1),
  84 .BR cupsd (8),
  85 .BR cupsd.conf (5),
  86 .BR filter (7),
  87 .BR ppdcfile (5),
  88 CUPS Online Help (http://localhost:631/help)
  89 .SH COPYRIGHT
  90 Copyright \[co] 2007-2019 by Apple Inc.