$ curl cheat.sh/
# flameshot
# Screenshot utility with a GUI.
# Supports basic image editing, such as text, shapes, colors, and imgur.
# More information: <https://flameshot.org>.

# Create a fullscreen screenshot:
flameshot full

# Create a screenshot interactively:
flameshot gui

# Create a screenshot and save it to a specific path:
flameshot gui --path path/to/directory

# Create a screenshot interactively in a simplified mode:
flameshot launcher

# Create a screenshot from a specific monitor:
flameshot screen --number 2

# Create a screenshot and print it to the standard output:
flameshot gui --raw

# Create a screenshot and copy it to the clipboard:
flameshot gui --clipboard

# Create a screenshot with a specific delay in milliseconds:
flameshot full --delay 5000

$
Follow @igor_chubin cheat.sh tldr