How to create screenshot...is there an additional features?
If I need to capture a special portion (fixed dimensions in pixels) of the screen, how to do that?
iMac 21.5″, macOS 10.14
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Use the shift+command+4 shortcut to determine the starting screen coordinates for your capture, then press escape to dismiss it. Then, in the Terminal, use this syntax, where the first two entries are from the preceding sentence, and the last two are the dimensions to capture:
screencapture -help
screencapture -p -R158,250,500,50
This resulted in a default .png image being written to my Desktop:
Each time you run this command string, it will capture a new image from the same location on the screen.
