display the packages included in the installed patterns. https://forums.opensuse.org/showthread.php/464559-List-of-installed-packages-since-OS-installation?p=2378719#post2378719

gistfile1.txt

#! /bin/bash

# display the packages included in the installed patterns. 
# You'll only have to install the patterns - not the packages! 
for pat in $(zypper pt -i | awk -F "|" '/^i/ { print $2 }' | sort -u | sed 's/^ //;s/ *$//;s/ /#/g') ; do
	pkg=$(zypper info -t pattern "${pat//#/ }" | awk 'BEGIN { ORS=" "} ; /^i/&&/| package |/{ print $3 }')
	[ "$pkg" ] || continue
	printf "* %s\n%s\n\n" "${pat//#/ }" "$pkg"
	pkgs="$pkgs $pkg"
done


echo $pkgs | tr " " "\n" | sort -u > /tmp/pkg0.lst
zypper se -i -t package | awk '/^i/ { print $3}' | sort -u > /tmp/pkg1.lst
diff /tmp/pkg{0,1}.lst | awk '/^>/ { print $2 }' > /tmp/pkg2.lst

# display dependencies installed by the remaining packages.
# You'll only have to install these packages. 
for pkg in $(cat /tmp/pkg2.lst) ; do
	dep=$(rpm -q --requires $pkg | sed '/(/d;/^\//d;s/ .*//;/\.so.[0-9]*/d' | sort -u | tr "\n" " ")
	printf "* %s\n%s\n\n" $pkg "$dep" 		
	deps="$deps $dep"
done

echo $deps | tr " " "\n" | sort -u > /tmp/pkg3.lst

# display remaining packages to install
echo "* remaining packages: "
diff /tmp/pkg{2,3}.lst | awk '/^>/ { print $2 }' | tr "\n" " "