How can I merge local master into all local branches?

Question

I have several local branches, and after sometime, I merged all these branches into master, and then I want to merge local master into all local branches.

How can I do that?

Answer 1

There is no one single command in git, but the way to do something "for all the branches" is, in a bash session:

for BRANCH in `ls .git/refs/heads`; do something $BRANCH; done

That could be used for merging:

for BRANCH in `ls .git/refs/heads`; do if [[ "$BRANCH" != "master" ]] ; then git checkout $BRANCH ; git merge master ; fi ; done

Or for resetting the branch, as suggested in William 's answer :

for BRANCH in `ls .git/refs/heads`; do if [[ "$BRANCH" != "master" ]] ; then git checkout $BRANCH ; git reset --hard master ; fi ; done

Answer 2

You can delete the local branches and recreate them. With this, the new branches will be a mirror of the master branch. You can obtain the same result with git checkout branch-name && git reset --hard master .

Remember that this can delete some commits. If you don't want that (maybe because these local branches have a remote branch), you will need to do a git merge : git checkout branch-name && git merge master .

Answer 3

I used VonC's answer from here, but then for some reason ls .git/refs/heads stopped resulting all branch names - only two ones were in this folder. So this modified version worked for me after:

for BRANCH in `git branch`; do if [[ "$BRANCH" != "master" ]] ; then git checkout $BRANCH ; git merge master --no-edit; fi ; done