screenshots_processing.sh

#!/bin/bash
# 150% fullscreen

EVEN_UP_CROP=179
ODD_DOWN_CROP=16

#result
SIZE=918x1192
SHIFT=+215+138

num=1
count=1
for f in *.png
do
	if [ $num -eq 1 ]
	then
		odd=$f
		num=2
	else
		even=$f
		montage -geometry +0+0 -tile 1x2             \
		\( "$odd" -crop -0-$ODD_DOWN_CROP \)         \
		\( "$even" -crop +0+$EVEN_UP_CROP \)         \
		-crop $SIZE$SHIFT                            \
		$count.png
		num=1
		echo -n [$count]
		((count++))
	fi
done	
echo '...DONE'