Update all submodules to latest commit on origin

git/update-all-submodules-to-latest-commit-on-origin.md

@@ -0,0 +1,11 @@
+# Update all submodules to latest commit on origin
+
+I use [Git submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) in a bunch of projects, and one common task is checking out the latest commit on the origin.
+
+Since Git 1.8.2 this is a one-liner, but I'm always forgetting it, so here it is:
+
+```sh
+git submodule update --remote --rebase # or `--merge` if you swing that way
+```
+
+The answers to [this StackOverflow question](https://stackoverflow.com/q/5828324) have some more detail (including a command that works on earlier versions of Git).