2017-08-22 13:52:52
sudo apt-get install scrot
捕捉活动窗口（按下回车后，3秒之内点击要捕捉的窗口）：
scrot -d 3 -u
捕捉选定的区域（按下回车后，鼠标左键选定区域即可）：
scrot -s
scrot帮助：
Usage : scrot [OPTIONS]… [FILE]
Where FILE is the target file for the screenshot.
If FILE is not specified, a date-stamped file will be dropped in the
current directory.
See man scrot for more details
-h, –help display this help and exit
-v, –version output version information and exit
-b, –border When selecting a window, grab wm border too
-c, –count show a countdown before taking the shot
-d, –delay NUM wait NUM seconds before taking a shot
-e, –exec APP run APP on the resulting screenshot
-q, –quality NUM Image quality (1-100) high value means
high size, low compression. Default: 75.
For lossless compression formats, like png,
low quality means high compression.
-m, –multidisp For multiple heads, grab shot from each
and join them together.
-s, –select interactively choose 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,
or the geometry in percent, e.g. 50×60 or 80×20.
-z, –silent Prevent beeping
SPECIAL STRINGS
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 interpreted by strftime(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)
$m thumbnail path/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 ‘$’
\n prints a newline (ignored when used in the filename)
Example:
scrot ‘%Y-%m-%d_$wx$h_scrot.png’ -e ‘mv $f ~/images/shots/’
Creates a file called something like 2000-10-30_2560x1024_scrot.png
and moves it to your images directory.
This program is free software see the file COPYING for licensing info.
Copyright Tom Gilbert 2000
Email bugs to <scrot_sucks@linuxbrit.co.uk>
