# deletes the branch if it has already been fully merged in its upstream branch
$ git branch -d <branch_name> 

# The -D option is an alias for --delete --force, which deletes the branch "irrespective of its merged status." [Source: man git-branch]
$ git branch -D <branch_name>

# Delete Remote Branch
# In most cases, <remote_name> will be origin
$ git push <remote_name> --delete <branch_name>

$ git branch -d <local-branch>
$ git push origin --delete <remote-branch-name>

# If only exists locally:
$ git branch -d <local-branch>
# If already exists remotely:
$ git push origin --delete <remote-branch-name>
# If remote only on website: select symbol with number right of branch drop-down,
# then click red trashcan symbol on right side of list.

del branch git