X-Git-Url: https://git.sommitrealweird.co.uk/advent-of-code-2021.git/blobdiff_plain/a8478dc6f1b0da0421ec3c07ce400aeb8b39a9eb..HEAD:/day02/sub.sh

diff --git a/day02/sub.sh b/day02/sub.sh
old mode 100644
new mode 100755
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