update to nextra 4

content/git/remove-merged-branch.md

@@ -0,0 +1,20 @@
+---
+tags:
+  - git
+  - branch
+  - clean
+  - delete
+---
+
+# Delete all local branches that are already merged.
+
+This command is useful if you have a buch of local branches that you don't need anymore.
+
+```bash
+git branch --merged | grep -v \* | xargs git branch -D
+```
+
+[Original SO Link](https://stackoverflow.com/a/10610669)
+
+
+