diff --git a/scripts/start-backup b/scripts/start-backup
new file mode 100755
index 000000000..f42bf6e7a
--- /dev/null
+++ b/scripts/start-backup
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+if [[ "$BACKUP" == "" ]]; then
+  echo "BACKUP environment variable is required"
+  exit 1
+fi
+
+if [[ "$PROFILE" == "" ]]; then
+  echo "PROFILE environment variable is required"
+  exit 1
+fi
+
+backupPath="$HOME/Library/Application Support/Signal-$BACKUP"
+profilePath="$HOME/Library/Application Support/Signal-$PROFILE"
+
+rm -rf "$profilePath" && \
+  cp -R "$backupPath" "$profilePath" && \
+  NODE_APP_INSTANCE="$PROFILE" yarn start