CSV出力用。
$ rpm -qa \
--queryformat '%{GROUP},%{NAME},%{VERSION},%{RELEASE},%{BUILDTIME},%{INSTALLTIME}\n' | \
awk -F ',' '{printf("\"%s\",\"%s\",\"%s\",\"%s\",\"%s\",\"%s\"\n", \
$1, $2, $3, $4,\
strftime("%Y/%m/%d %H:%M", $5), \
strftime("%Y/%m/%d %H:%M", $6))}' | sort