X11 screen grabber from cmd line

[Antonio Olivares]

ImageMagick port can do this using command import.

$ which import
/usr/local/bin/import
$ import --help
Version: ImageMagick 6.8.0-7 2013-03-06 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC
Features:

Usage: import [options ...] [ file ]

Image Settings:
  -adjoin              join images into a single multi-image file
  -border              include window border in the output image
  -channel type        apply option to select image channels
  -colorspace type     alternate image colorspace
  -comment string      annotate image with comment
  -compress type       type of pixel compression when writing the image
  -define format:option
                       define one or more image format options
  -density geometry    horizontal and vertical density of the image
  -depth value         image depth
  -descend             obtain image by descending window hierarchy
  -display server      X server to contact
  -dispose method      layer disposal method
  -dither method       apply error diffusion to image
  -delay value         display the next image after pausing
  -encipher filename   convert plain pixels to cipher pixels
  -endian type         endianness (MSB or LSB) of the image
  -encoding type       text encoding type
  -filter type         use this filter when resizing an image
  -format "string"     output formatted image characteristics
  -frame               include window manager frame
  -gravity direction   which direction to gravitate towards
  -identify            identify the format and characteristics of the image
  -interlace type      None, Line, Plane, or Partition
  -interpolate method  pixel color interpolation method
  -label string        assign a label to an image
  -limit type value    Area, Disk, Map, or Memory resource limit
  -monitor             monitor progress
  -page geometry       size and location of an image canvas
  -pause value         seconds delay between snapshots
  -pointsize value     font point size
  -quality value       JPEG/MIFF/PNG compression level
  -quiet               suppress all warning messages
  -regard-warnings     pay attention to warning messages
  -respect-parentheses settings remain in effect until parenthesis boundary
  -sampling-factor geometry
                       horizontal and vertical sampling factor
  -scene value         image scene number
  -screen              select image from root window
  -seed value          seed a new sequence of pseudo-random numbers
  -set property value  set an image property
  -silent              operate silently, i.e. don't ring any bells
  -snaps value         number of screen snapshots
  -synchronize         synchronize image to storage device
  -taint               declare the image as modified
  -transparent-color color
                       transparent color
  -treedepth value     color tree depth
  -verbose             print detailed information about the image
  -virtual-pixel method
                       Constant, Edge, Mirror, or Tile
  -window id           select window with this id or name

Image Operators:
  -annotate geometry text
                       annotate the image with text
  -colors value        preferred number of colors in the image
  -crop geometry       preferred size and location of the cropped image
  -encipher filename   convert plain pixels to cipher pixels
  -geometry geometry   preferred size or location of the image
  -help                print program options
  -monochrome          transform image to black and white
  -negate              replace every pixel with its complementary color
  -repage geometry     size and location of an image canvas
  -quantize colorspace reduce colors in this colorspace
  -resize geometry     resize the image
  -rotate degrees      apply Paeth rotation to the image
  -strip               strip image of all profiles and comments
  -thumbnail geometry  create a thumbnail of the image
  -transparent color   make this color transparent within the image
  -trim                trim image edges
  -type type           image type

Miscellaneous Options:
  -debug events        display copious debugging information
  -help                print program options
  -list type           print a list of supported option arguments
  -log format          format of debugging information
  -version             print version information

By default, 'file' is written in the MIFF image format.  To
specify a particular image format, precede the filename with an image
format name and a colon (i.e. ps:image) or specify the image type as
the filename suffix (i.e. image.ps).  Specify 'file' as '-' for
standard input or output.
$



Best Regards,


Antonio

On Thu, May 9, 2013 at 1:41 PM, Matthias Apitz <guru at unixarea.de> wrote:
>
> Hello,
>
> Do we have something in the ports which could do a screen shoot of $DISPLAY, but
> from the cmd line of an alpha console, and save it as PNG or JPEG?
> Thx
>
>         matthias
> --
> Sent from my FreeBSD netbook
>
> Matthias Apitz               |  - No system with backdoors like Apple/Android
> E-mail: guru at unixarea.de     |  - Never being an iSlave
> WWW: http://www.unixarea.de/ |  - No proprietary attachments, no HTML/RTF in E-mail
> phone: +49-170-4527211       |  - Respect for open standards
> _______________________________________________
> freebsd-questions at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"