slop

Get a selection of the screen. More information: https://github.com/naelstrof/slop.

• Wait for the user to make a selection and output its geometry to stdout:

slop

• Double click, rather than click and drag, to draw a selection:

slop -D

• Highlight the selection rather than outlining it:

slop -l

• Specify the output format:

slop -f format_string

• Specify the selection rectangle’s color:

slop -c red,green,blue,alpha