我使用一个Python脚本，它自动执行最流行的答案中的步骤，并检查其余分支，看看它们是否会在合并时产生任何更改，如果没有，则交互提示删除它们：https://github.com/robertknight/prune-merged-branches.

Git中没有命令会自动为您执行此操作。但是你可以编写一个脚本，使用Git命令来满足你的需要。这可以通过多种方式实现，具体取决于您使用的分支模型。

如果您需要知道分支是否已合并到master中，如果myTopicBranch已合并，则以下命令将不会产生输出（即，您可以删除它）

$ git rev-list master | grep $(git rev-parse myTopicBranch)

您可以使用Gitbranch命令解析出Bash中的所有分支，并对所有分支执行for循环。在这个循环中，您可以使用上面的命令检查是否可以删除分支。

我的Bash脚本贡献大致基于mmrobin的答案。

它需要一些有用的参数来指定include和exclude，或者只检查/删除本地或远程分支，而不是两者。

#!/bin/bash

# exclude branches regex, configure as "(branch1|branch2|etc)$"
excludes_default="(master|next|ag/doc-updates)$"
excludes="__NOTHING__"
includes=
merged="--merged"
local=1
remote=1

while [ $# -gt 0 ]; do
  case "$1" in
  -i) shift; includes="$includes $1" ;;
  -e) shift; excludes="$1" ;;
  --no-local) local=0 ;;
  --no-remote) remote=0 ;;
  --all) merged= ;;
  *) echo "Unknown argument $1"; exit 1 ;;
  esac
  shift   # next option
done

if [ "$includes" == "" ]; then
  includes=".*"
else
  includes="($(echo $includes | sed -e 's/ /|/g'))"
fi

current_branch=$(git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
if [ "$current_branch" != "master" ]; then
  echo "WARNING: You are on branch $current_branch, NOT master."
fi
echo -e "Fetching branches...\n"

git remote update --prune
remote_branches=$(git branch -r $merged | grep -v "/$current_branch$" | grep -v -E "$excludes" | grep -v -E "$excludes_default" | grep -E "$includes")
local_branches=$(git branch $merged | grep -v "$current_branch$" | grep -v -E "$excludes" | grep -v -E "$excludes_default" | grep -E "$includes")
if [ -z "$remote_branches" ] && [ -z "$local_branches" ]; then
  echo "No existing branches have been merged into $current_branch."
else
  echo "This will remove the following branches:"
  if [ "$remote" == 1 -a -n "$remote_branches" ]; then
    echo "$remote_branches"
  fi
  if [ "$local" == 1 -a -n "$local_branches" ]; then
    echo "$local_branches"
  fi
  read -p "Continue? (y/n): " -n 1 choice
  echo
  if [ "$choice" == "y" ] || [ "$choice" == "Y" ]; then
    if [ "$remote" == 1 ]; then
      remotes=$(git remote)
      # Remove remote branches
      for remote in $remotes
      do
        branches=$(echo "$remote_branches" | grep "$remote/" | sed "s/$remote\/\(.*\)/:\1 /g" | tr -d '\n')
        git push $remote $branches
      done
    fi

    if [ "$local" == 1 ]; then
      # Remove local branches
      locals=$(echo "$local_branches" | sed 's/origin\///g' | tr -d '\n')
      if [ -z "$locals" ]; then
        echo "No branches removed."
      else
        git branch -d $(echo "$locals" | tr -d '\n')
      fi
    fi
  fi
fi

Adam更新答案的别名版本：

[alias]
    branch-cleanup = "!git branch --merged | egrep -v \"(^\\*|master|dev)\" | xargs git branch -d #"

此外，请参阅此答案以获得有关转义复杂别名的实用提示。

如果您想删除已合并到当前所在分支的所有本地分支，那么我根据前面的回答提出了一个安全的命令：

git branch --merged | grep -v \* | grep -v '^\s*master$' | xargs -t -n 1 git branch -d

此命令不会影响当前分支或主分支。它还将使用xargs的-t标志告诉您它在做什么。

对于Windows，您可以使用以下命令安装Cygwin并删除所有远程分支：

git branch -r --merged | "C:\cygwin64\bin\grep.exe" -v master | "C:\cygwin64\bin\sed.exe" 's/origin\///' | "C:\cygwin64\bin\xargs.exe" -n 1 git push --delete origin