最近遇到了一个比较麻烦的OTP需求，由于是第一次做，所以做了很多的调查和试错，所以当需求完成的时候我的commit也高达12个之多
这对于一个票而言是不雅致的，所以我们要使用git来进行一些操作：
git rebase -i HEAD~n //n代表你要查看的提交记录条数
比如我要压缩4条commit：
git rebase -i HEAD~4
这个时候终端会出现：
pick d167a86 提交记录1
pick c56d2e4 提交记录2
pick c56d2e4 提交记录3
pick c56d2e4 提交记录4
# Rebase 7a28439..c56d2e4 onto 7a28439 (2 commands)
#
# Commands:
# p, pick = use commit
# r, reword = use commit, but edit the commit message
# e, edit = use commit, but stop for amending
# s, squash = use commit, but meld into previous commit
# f, fixup = like "squash", but discard this commit's log message
# x, exec = run command (the rest of the line) using shell
# d, drop = remove commit
#
# These lines can be re-ordered; they are executed from top to bottom.
#
# If you remove a line here THAT COMMIT WILL BE LOST.
#
# However, if you remove everything, the rebase will be aborted.
#
# Note that empty commits are commented out可以看到我们提交的4条记录，假如，我需要将记录2、记录3、记录4合并到记录2（只能将最新的合并，即就是 记录1可以合并记录2，但是记录2不能合并记录1），我们将记录3、记录4中的pick改为squash然后保存更改退出后（Esc i 两个按键后可以修改内容，Esc Shift+: wq三个按键后为保存并退出，Esc Shift+: wq三个按键后为保存并退出，Esc Shift+: q三个按键后为退出），然后会进入：
# This is a combination of 3 commits.
# This is the 1st commit message:
提交记录2
# This is the commit message #2:
提交记录3
# This is the commit message #3:
提交记录4
# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Date: Fri Oct 12 14:58:12 2018 +0800
#
# interactive rebase in progress; onto 7a28439
# Last commands done (2 commands done):
# pick d167a86 解决测试中提出的bug,修改etag缓存策略
# squash c56d2e4 解决测试中的bug和修改UI布局,开发新漫画2.6.0版本
# No commands remaining.
# You are currently rebasing branch 'develope' on '7a28439'.
#
# Changes to be committed:
# modified: .gitignore
# deleted: .gradle/.DS_Store
# deleted: .gradle/2.14.1/.DS_Store
# deleted: .gradle/2.14.1/taskArtifacts/cache.properties
# deleted: .gradle/2.14.1/taskArtifacts/cache.properties.lock
# deleted: .gradle/2.14.1/taskArtifacts/fileHashes.bin
# deleted: .gradle/2.14.1/taskArtifacts/fileSnapshots.bin
# deleted: .gradle/2.14.1/taskArtifacts/fileSnapshotsToTreeSnapshotsIndex.bin
# deleted: .gradle/2.14.1/taskArtifacts/taskArtifacts.bin
# deleted: .gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localClassSetAnalysis/localClassSetAnalysis.bin
# deleted: .gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localClassSetAnalysis/localClassSetAnalysis.lock
# deleted: .gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localJarClasspathSnapshot/localJarClasspathSnapshot.bin# deleted: .gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localJarClasspathSnapshot/localJarClasspathSnapshot.lock我们删除上面的"提交记录2、提交记录3、提交记录4"后，保存退出，就可以了
之后我们只要使用
git push --force origin master
提交到远端，在pr里就可以看到commit数量减少了。