How do I take a screenshot from the terminal?

Question

I am using Lubuntu 14.04.

How do I - using the command line - take a screenshot of a window or my desktop?

Answer 1

_{moved the OP's answer embedded in the question to here as a community wiki}

In Lubuntu the command-line entry to take a screenshot is the following:

lxsession-default screenshot window

Answer 2

In Xubuntu

For fullscreen

xfce4-screenshooter -f

For region

xfce4-screenshooter -r

For active window

xfce4-screenshooter -w

To save to a directory, with a region

xfce4-screenshooter -rs ~/Desktop

To copy to clipboard, with a region

xfce4-screenshooter -rc

All available options are detailed in the man page man xfce4-screenshooter

Answer 3

In Lubuntu you can use the following commands to take screenshot..

take screenshot
scrot

take screenshot after some delay (5 sec)

scrot -d 5