+ stat)
+ ls -l --time-style='+%Y %m' db |
+ awk -v 'hdr=Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec' '
+ BEGIN { printf "%64s\n", hdr }
+ NR>1 { cnt[$6+0][$7+0]++ }
+ END { for (y in cnt) {
+ printf "%4d", y
+ for (m=1; m<=12; m++)
+ printf "%5s", cnt[y][m]
+ printf "\n" } }'