2 files changed, 18 insertions, 2 deletions
diff --git a/README.md b/README.md
index f039909..68353ca 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,7 @@ Language: Haskell
 
 ## Running exercises
 
-    cd day01
-    ghc ../utils.hs main.hs && (cat input.txt | ./main)
+    ./aoc day01
 
 ## Author
 
diff --git a/aoc b/aoc
new file mode 100755
index 0000000..8e144fb
--- /dev/null
+++ b/aoc
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+DAY="${1}"
+if [ -z "${DAY}" ]; then
+    echo "usage: ${0} day01"
+    exit 1
+fi
+
+set -euo pipefail
+
+cd "${DAY}"
+if [ ! -f "input.txt" ]; then
+    echo "input.txt not found in ${DAY}"
+    exit 1
+fi
+
+ghc ../utils.hs main.hs && (cat input.txt | ./main)