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Sat, Jul 19, 2014 5:17 pm

Taking a screenshot with scrot

Scrot is a command line screen capturing application for Linux systems developed by Tom Gilbert. If the package is installed, you can type scrot imagefile to take a snapshot of the screen and store it in the file named imagefile, e.g., scrot test.png. If you don't want the terminal window from which you ran the command captured in the screenshot, you can issue the sleep command followed by some delay in seconds followed by a semicolon and then the scrot command to give you time to minimize the terminal window from which you ran the command. E.g.:
$ sleep 10; scrot test.png

The above command would give you 10 seconds to minimize the terminal window and any other open windows you didn't want to see in the screenshot. The results of the screenshot would be stored in the directory from which the command was run in the file test.png. Or you can use the scrot command's own delay parameter, -d or --delay followed by the number of seconds of delay you wish to give yourself before scrot captures the screen, e.g., scrot -d 10.

For help on the utility issue the command scrot --help.

scrot --help
Usage : scrot [OPTIONS]... [FILE]
  Where FILE is the target file for the screenshot.
  If FILE is not specified, a date-stamped file will be dropped in the
  current directory.
  See man scrot for more details
  -h, --help                display this help and exit
  -v, --version             output version information and exit
  -b, --border              When selecting a window, grab wm border too
  -c, --count               show a countdown before taking the shot
  -d, --delay NUM           wait NUM seconds before taking a shot
  -e, --exec APP            run APP on the resulting screenshot
  -q, --quality NUM         Image quality (1-100) high value means
                            high size, low compression. Default: 75.
                            For lossless compression formats, like png,
                            low quality means high compression.
  -m, --multidisp           For multiple heads, grab shot from each
                            and join them together.
  -s, --select              interactively choose a window or rectangle
                            with the mouse
  -u, --focused             use the currently focused window
  -t, --thumb NUM           generate thumbnail too. NUM is the percentage
                            of the original size for the thumbnail to be,
                            or the geometry in percent, e.g. 50x60 or 80x20.
  -z, --silent              Prevent beeping

  SPECIAL STRINGS
  Both the --exec and filename parameters can take format specifiers
  that are expanded by scrot when encountered.
  There are two types of format specifier. Characters preceded by a '%'
  are interpreted by strftime(2). See man strftime for examples.
  These options may be used to refer to the current date and time.
  The second kind are internal to scrot  and are prefixed by '$'
  The following specifiers are recognised:
                  $f image path/filename (ignored when used in the filename)
                  $m thumbnail path/filename
                  $n image name (ignored when used in the filename)
                  $s image size (bytes) (ignored when used in the filename)
                  $p image pixel size
                  $w image width
                  $h image height
                  $t image format
                  $$  prints a literal '$'
                  \n prints a newline (ignored when used in the filename)
  Example:
          scrot '%Y-%m-%d_$wx$h_scrot.png' -e 'mv $f ~/images/shots/'
          Creates a file called something like 2000-10-30_2560x1024_scrot.png
          and moves it to your images directory.

This program is free software see the file COPYING for licensing info.
Copyright Tom Gilbert 2000
Email bugs to <scrot_sucks@linuxbrit.co.uk>

You can also type man scrot to see information on use of the utility.

References:

  1. Scrot
    Wikipedia, the free encyclopedia
  2. The Tom Gilbert Blog

[/os/unix/linux/utilities/graphics] permanent link

Sat, Jul 19, 2014 1:11 pm

Steps for taking a screenshot in GIMP

Steps for taking a screenshot in GNU Image Manipulation Program (GIMP), which is a free graphics program available for Linux, Mac OS X, Solaris, and Microsoft Windows systems.
  1. Click on File.
  2. Select Create.
  3. Select Screenshot.
  4. When the GIMP screenshot window opens, you will have the option of selecting the area for the screenshot.
    Area
    • Take a screenshot of a single window
      [ ] Include window decoration
    • Take a screenshot of the entire screen
      [ ] Include mouse pointer
    • Select a region to grab
    Delay [ 0 ] seconds

    At the end of the delay, click in a window to snap it.

  5. When you have selected the option you want, click on the Snap button.

If you choose to take a screenshot of a single window, the cursor will change to something similar to a "+". Move the cursor over the appropriate window and that window will be pasted into a GIMP window when you click on the window. Note: make sure you don't have any windows overlapping the one you wish to capture, otherwise you may see a portion of an overlapping window in the screenshot.

If you don't want to capture the border around a window, scrollbars for the window, and any application menu at the top of the window, uncheck "Include window decoration.

If you choose "Take a screenshot of the entire screen", a snapshot will be taken of the entire screen including the GIMP window.

If you select a region to grab, the cursor will change as above. You can then click in one corner of the area of the screen you wish to include in the snapshot then drag the mouse to a diagonal corner while holding the mouse button down. When you release the button, the area selected will be captured.

Once you have the screen shot, you can create a GIF, JPG, PNG, etc. image file from the screenshot by clicking on File and selecting Export.

[/software/graphics/gimp] permanent link

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