man scrot

scrot(1) General Commands Manual scrot(1)

scrot – capture a screenshot using imlib2

scrot [options] [file]

scrot is a screen capture utility using the imlib2 library to aquire
and save images. scrot has a few options, detailed below. Specify
[file] as the filename to save the screenshot to. If [file] is not
specified, a date-stamped file will be dropped in the current direc‐

-h, –help
display help output and exit.

-v, –version
output version information and exit.

-b, –border
When selecting a window, grab wm border too

-c, –count
Display a countdown when used with delay.

-d, –delay NUM
Wait NUM seconds before taking a shot.

-e, –exec APP
Exec APP on the saved image.

-q, –quality NUM
Image quality (1-100) high value means high size, low compression.
Default: 75. (Effect differs depending on file format chosen).

-s, –select
Interactively select a window or rectangle with the mouse.

-u, –focused
Use the currently focused window.

-t, –thumb NUM
generate thumbnail too. NUM is the percentage of the original size
for the thumbnail to be.

-z, –silent
prevent beeping.

Both the –exec and filename parameters can take format specifiers that
are expanded by scrot when encountered. There are two types of format
specifier. Characters preceded by a ‘%’ are interpretted by strf‐
time(2). See man strftime for examples. These options may be used to
refer to the current date and time. The second kind are internal to
scrot and are prefixed by ‘$’ The following specifiers are recognised:

$f image path/filename (ignored when used in the filename)
$n image name (ignored when used in the filename)
$s image size (bytes) (ignored when used in the filename)
$p image pixel size
$w image width
$h image height
$t image format
$$ prints a literal ‘$’
\n prints a newline (ignored when used in the filename)

scrot ‘%Y-%m-%d_$wx$h.png’ -e ‘mv $f ~/shots/’
This would create a file called something like 2000-10-30_2560x1024.png
and move it to your shots directory.

None known.