diff --git a/alfa4230-lab03.sh b/alfa4230-lab03.sh
new file mode 100755
index 0000000..95e634e
--- /dev/null
+++ b/alfa4230-lab03.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+# Starter shell script
+# Put commands below
+# To run, type ./starter.sh (you need the "./")
+# It must have permissions starting with a "7"  
+#mkdir -p A/{B,C,D}
+#mkdir -p C/{E,F}
+#mkdir -p D/{G,H/{J,K},I}
+#touch A/{aa,B/bb,C/cc,D/dd}
+#touch C/{cc,E/ee,F/ff}
+#touch D/{dd,G/gg,H/{hh,J/jj,K/kk},I/ii}
+mkdir -p main/{A/{B,C,D},E/{F,G},H/{I,J/{K,L},M}}
+touch main/{A/{aa,B/bb,C/cc,D/dd},E/{ee,F/ff,G/gg},H/{hh,I/ii,J/{jj,K/kk,L/ll},M/mm}}
+sudo apt-get -y install tree
+sudo apt-get -y install git
diff --git a/alfa4230-testfile.md b/alfa4230-testfile.md
new file mode 100644
index 0000000..173b679
--- /dev/null
+++ b/alfa4230-testfile.md
@@ -0,0 +1,3 @@
+Hello Mars
+Hello again
+