1 files changed, 32 insertions, 0 deletions
diff --git a/mirror.sh b/mirror.sh
new file mode 100755
index 0000000..e9a808a
--- /dev/null
+++ b/mirror.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -euo pipefail
+
+die()
+{
+    echo "$@" 1>&2
+    exit 1
+}
+
+current_branch()
+{
+    git rev-parse --abbrev-ref HEAD
+}
+
+uncommitted () {
+    git status --short | grep '^ M ' > /dev/null
+}
+
+case "$(current_branch)" in
+    master|main)
+	if uncommitted
+	then
+	    die "there are uncommitted change"
+	fi
+	git pull --rebase gitlab HEAD
+	git push origin HEAD
+	;;
+    *)
+	die "not in main or master branch"
+	;;
+esac