#!/usr/bin/clitosis  ## -*- shell-script -*-

$ dseq "1917-01-01" "2071-12-31" -f "ymd" > "add.ymd-28y.ref"
$ dadd +28y < "add.ymd-28y.ref" | dadd -28y
< "add.ymd-28y.ref"
$ rm -- "add.ymd-28y.ref"
$

## add.ymd-28y.clit