rename repo, subdir for yearly challenges

2020/day02/ex1.bash

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# ex1.bash: Advent2020 game, day 2/game 1
+
+CMD=${0##*/}
+
+declare -i beg end num found=0 nlines=0
+
+IFS=$':- \t'
+while read -r beg end char str; do
+	stripped=${str//[^$char]}					  # keep only specified char
+	((num = ${#stripped}))						  # occurences of this char
+	((num >= beg && num <= end && found++))		  # match ?
+	((nlines++))
+done
+printf "${CMD} : lines: %d matched:%d\n" "$nlines" "$found"
+
+exit 0