Day 16 pt 1 - doesn't actually stack packets hierarchically - just parses the headers

[advent-of-code-2021.git] / day02 / sub.sh

diff --git a/day02/sub.sh b/day02/sub.sh
old mode 100644 (file)
new mode 100755 (executable)
index b8040aa..2140d4e
--- a/day02/sub.sh
+++ b/day02/sub.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 
-exec 3<input.txt
+filename="${1:-input.txt}"
+
+exec 3<"$filename"
 depth=0
 horizontal=0
 aim=0