diff --git a/.DS_Store b/.DS_Store
index b09cf81c..c5fb584c 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/br.sh b/br.sh
new file mode 100644
index 00000000..6e9e4567
--- /dev/null
+++ b/br.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+git checkout master
+git pull
+git checkout -b $1
+echo a > $1
+git add $1
+git commit -m 1
+echo b >> $1
+git add $1
+git commit -m 2
+git push --set-upstream origin $1
\ No newline at end of file
diff --git a/master.sh b/master.sh
new file mode 100644
index 00000000..65c2df73
--- /dev/null
+++ b/master.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+git checkout master
+git pull
+echo a > $1
+echo b >> $1
+git add $1
+git commit -m m
+git push
+git checkout -
+git merge master --no-ff
+git push
\ No newline at end of file
diff --git a/models/.DS_Store b/models/.DS_Store
index 26d86485..d1dfde2d 100644
Binary files a/models/.DS_Store and b/models/.DS_Store differ
diff --git a/models/2/sldemo_autotrans.slx b/models/1/sldemo_autotrans.slx
similarity index 100%
rename from models/2/sldemo_autotrans.slx
rename to models/1/sldemo_autotrans.slx
diff --git a/models/test.txt b/models/test_renamed.txt
similarity index 100%
rename from models/test.txt
rename to models/test_renamed.txt