Git delete all branches except main

git branch | grep -v "main" | xargs git branch -D

This command will delete all branches except main:

1. git branch: Lists all local branches in your repository.
2. grep -v "main": Filters out the line containing "main". -v inverts the match, so branches named main are excluded from the output.
3. xargs git branch -D: Takes the list of branches (excluding main) and passes each branch name as an argument to the git branch -D command. git branch -D forcibly deletes a branch, even if it hasn’t been fully merged.