Update 2024-02-14 07:51 OpenBSD/amd64-x13

.bin/OLD/next.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# $1 = 2013-11-08
+
+date_in=2013-11-08
+len=28
+
+len_s=$(( 28 * 24 * 60 * 60 ))
+
+# convert to ts
+date_s_in=$(date -jf %Y-%m-%d +%s $date_in)
+
+# add len
+date_s_out1=$(( date_s_in + len_s ))
+date_s_out2=$(( date_s_out1 + len_s ))
+date_s_out3=$(( date_s_out2 + len_s ))
+
+date_out1=$(date -jf %s +%Y-%m-%d $date_s_out1)
+date_out2=$(date -jf %s +%Y-%m-%d $date_s_out2)
+date_out3=$(date -jf %s +%Y-%m-%d $date_s_out3)
+
+echo "$date_in + $len days = $date_out1"
+echo "$date_out1 + $len days = $date_out2"
+echo "$date_out2 + $len days = $date_out3"
+