zypper-autoremove.sh

#Single Liner
while [[ $(zypper pa --unneeded|tail -n+5|wc -l) -gt 0  ]]; do zypper pa --unneeded |tail -n+5|cut -d'|' -f3 | xargs sudo zypper rm; done

#Bash functions
zypper-cleanup() {
        thingsToClean=$(zypper pa --unneeded|tail -n+5|awk -F'|' '{print $3}')
        if [[ ${#thingsToClean[@]} -ne 0 ]]; then 
            echo ${thingsToClean[@]}|xargs sudo zypper rm -u 
        else
            echo "Nothing to cleanup"
        fi
    }

#Alternatively
    zypper-autoremove() {
	packages=($(zypper pa --unneeded --orphaned --installed-only|tail -n +5|awk '{print $5}'))
	length=${#packages[@]}
	
        if [ $length -ge 0 ]; then
			cat <<-EOF
			The following packages will be removed:
			${packages[@]}^

			EOF
		    read -p 'Proceed [y|n]: ' answer
		    if [ "$answer" == "y" ]; then
			    echo ${packages[@]} | xargs -I% -n $length sudo zypper rm -u %
		    fi
	    else
		    echo "No orphaned or unneeded packages to remove"
	    fi
    }