osx man page for screencapture

SCREENCAPTURE(1)					    BSD General Commands Manual 					  SCREENCAPTURE(1)

NAME
     screencapture -- capture images from the screen and save them to a file or the clipboard

SYNOPSIS
     screencapture [-SWCTMPcimswxto] file

DESCRIPTION
     The screencapture utility is not very well documented to date.  A list of options follows.

     -c      Force screen capture to go to the clipboard.

     -C      Capture the cursor as well as the screen.	Only allowed in non-interactive modes.

     -i      Capture screen interactively, by selection or window.  The control key will cause the screen shot to go to the clipboard.	The space
	     key will toggle between mouse selection and window selection modes.  The escape key will cancel the interactive screen shot.

     -m      Only capture the main monitor, undefined if -i is set.

     -M      Open the taken picture in a new Mail message.

     -o      In window capture mode, do not capture the shadow of the window.

     -P      Open the taken picture in a Preview window.

     -s      Only allow mouse selection mode.

     -S      In window capture mode, capture the screen instead of the window.

     -t      <format> Image format to create, default is png (other options include pdf, jpg, tiff and other formats).

     -T      <seconds> Take the picture after a delay of <seconds>, default is 5.

     -w      Only allow window selection mode.

     -W      Start interaction in window selection mode.

     -x      Do not play sounds.

     -a      Do not capture attached windows.

     -r      Do not add screen dpi meta data to captured file.

     files   where to save the screen capture, 1 file per screen

BUGS
     Better documentation is needed for this utility.

SECURITY CONSIDERATIONS
     To capture screen content while logged in via ssh, you must launch screencapture in the same mach bootstrap hierarchy as loginwindow:

     PID=pid of loginwindow
     sudo launchctl bsexec $PID screencapture [options]

HISTORY
     A screencapture utility first appeared in Mac OS X v10.2.

Mac OS								   June 16, 2004							    Mac OS