https://bugs.kde.org/show_bug.cgi?id=431782
--- Comment #2 from Ilario Gottardello <ilario.gottarde...@gmail.com> ---
$ scanimage -L
device `niash:libusb:002:010' is a Hewlett-Packard ScanJet 3400C flatbed
scanner
$ scanimage -d niash:libusb:002:010 --help
Usage: scanimage [OPTION]...
Start image acquisition on a scanner device and write image data to
standard output.
Parameters are separated by a blank from single-character options (e.g.
-d epson) and by a "=" from multi-character options (e.g. --device-name=epson).
-d, --device-name=DEVICE use a given scanner device (e.g. hp:/dev/scanner)
--format=pnm|tiff|png|jpeg file format of output file
-i, --icc-profile=PROFILE include this ICC profile into TIFF file
-L, --list-devices show available scanner devices
-f, --formatted-device-list=FORMAT similar to -L, but the FORMAT of the output
can be specified: %d (device name), %v (vendor),
%m (model), %t (type), %i (index number), and
%n (newline)
-b, --batch[=FORMAT] working in batch mode, FORMAT is `out%d.pnm'
`out%d.tif'
`out%d.png' or `out%d.jpg' by default depending on
--format
This option is incompatible with --output-file.
--batch-start=# page number to start naming files with
--batch-count=# how many pages to scan in batch mode
--batch-increment=# increase page number in filename by #
--batch-double increment page number by two, same as
--batch-increment=2
--batch-print print image filenames to stdout
--batch-prompt ask for pressing a key before scanning a page
--accept-md5-only only accept authorization requests using md5
-p, --progress print progress messages
-o, --output-file=PATH save output to the given file instead of stdout.
This option is incompatible with --batch.
-n, --dont-scan only set options, don't actually scan
-T, --test test backend thoroughly
-A, --all-options list all available backend options
-h, --help display this help message and exit
-v, --verbose give even more status messages
-B, --buffer-size=# change input buffer size (in kB, default 32)
-V, --version print version information
Output format is not set, using pnm as a default.
Options specific to device `niash:libusb:002:010':
Geometry:
-l 0..220mm (in steps of 1) [0]
Top-left x position of scan area.
-t 0..296mm (in steps of 1) [0]
Top-left y position of scan area.
-x 0..220mm (in steps of 1) [210]
Width of scan-area.
-y 0..296mm (in steps of 1) [290]
Height of scan-area.
--resolution 75|150|300|600dpi [150]
Sets the resolution of the scanned image.
Image:
--gamma-table 0..255,... (in steps of 1)
Gamma-correction table. In color mode this option equally affects the
red, green, and blue channels simultaneously (i.e., it is an intensity
gamma table).
Scan Mode:
--mode Color|Gray|Lineart [Color]
Selects the scan mode (e.g., lineart, monochrome, or color).
Enhancement:
--threshold 0..100% (in steps of 1) [inactive]
Select minimum-brightness to get a white point
Type ``scanimage --help -d DEVICE'' to get list of all options for DEVICE.
List of available devices:
niash:libusb:002:010
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