Add script to get 70th day - day-70 - Files related to Day 70, official gopher holy-day
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DIR commit 13cb13c7acf484cc3272ee7d8ad7c3db1f14b9ef
HTML Author: Scarlett McAllister <git@roygbyte.com>
Date: Sun, 25 Jun 2023 20:23:17 -0300
Add script to get 70th day
Diffstat:
A day-70.sh | 45 +++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+), 0 deletions(-)
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DIR diff --git a/day-70.sh b/day-70.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# day-70.sh
+#
+# Find the 70th day of a given year
+#
+# Author: ROYGBYTE
+# Date: 2023
+
+leap_year() {
+ year=${1}
+ rule_1=$((year%4))
+ if [ ! $rule_1 -eq 0 ]; then
+ # Not divisable by 4, no leap.
+ return 1
+ fi
+ rule_2=$((year%100))
+ rule_3=$((year%400))
+ if [ $rule_2 -eq 0 ]; then
+ # Divisable by 100, maybe leap.
+ if [ ! $rule_3 -eq 0 ]; then
+ # Not divisable by 400, no leap.
+ return 1
+ fi
+ fi
+ return 0
+}
+
+# 70th day of year fluctuates depending on whether it's leap year or no.
+nth_day_march=11
+leap_year ${1}
+if [ $? -eq 0 ]; then
+ nth_day_march=10
+fi
+
+# Sanity check: day num should be 70, duh.
+date_string="${1}-03-${nth_day_march}"
+day_num=$(date --date="${date_string}" +%j)
+if [ ! $day_num -eq 70 ]; then
+ printf "Something went wrong\n"
+ exit 1
+fi
+
+# Pretty print the date information
+date --date="${date_string}"