学步园

十二. Git撤消操作

12.1
修改最后一次提交 git commit --amend

1.新建一个文件 2.提交一个之前的更改

3.跟踪这个文件 4.跟前一次一起提交

提示你是否重新编辑提交说明，如果不编辑退出后还是跟之前一样提交

commit 成功

或 git commit -m “” 可以直接提交

12.2
撤消已暂存的文件 git reset HEAD

#新建两个文件
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ touch 1txt
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ touch 2txt
#全部暂存
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git add -A
#查看文件状态
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git status
# On branch master
# Your branch is ahead of 'origin/master' by 1 commit.
#   (use "git push" to publish your local commits)
#
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#     new file:   1txt
#     new file:   2txt
# 


#取消暂存 1txt
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git reset HEAD 1txt
#再次查看文件状态，1txt 已经被取消啦

bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git status
# On branch master
# Your branch is ahead of 'origin/master' by 1 commit.
#   (use "git push" to publish your local commits)
#
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#     new file:   2txt
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#     1txt 

12.3
撤消对文件的修改 git checkout -- <file>

bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ ls
README          TEST            android-package ios-package     testamend
#修改文件testmend
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ vim testamend
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git status
# On branch master
# Your branch is ahead of 'origin/master' by 1 commit.
#   (use "git push" to publish your local commits)
#
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#     modified:   testamend
#
no changes added to commit (use "git add" and/or "git commit -a”)
#撤消文件的修改
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git checkout -- testamend
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git status
# On branch master
# Your branch is ahead of 'origin/master' by 1 commit.
#   (use "git push" to publish your local commits)
#
nothing to commit, working directory clean 

12.4
Git撤消commit

1. git log查看日志，找到需要回退的那次commit的 哈希值

12.5
Git版本回退

#查看log
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git log
commit 047cd2d2f6bd1ecdcdb4854b728300aeaa314b80
Author: 小朋 <xiaopeng.bxp@****.com>
Date:   Thu Jan 2 22:26:50 2014 +0800


    1test


commit fa7fd8d49f3789d39aa3cc52cd81e09e6d061719
Author: 小朋 <xiaopeng.bxp@****.com>
Date:   Tue Dec 31 13:29:45 2013 +0800


    delete test2


commit 746f92258e2bc65c46f77f37315f577091192885
Author: 小朋 <xiaopeng.bxp@****.com>
Date:   Tue Dec 31 13:22:07 2013 +0800


    test git commit -a 

…..

HEAD是指向最新的提交，上一次提交是HEAD^,上上次是HEAD^^,也可以写成HEAD～2 ,依次类推

#放弃本地所有修改，回退到上一个版本
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git reset --hard HEAD^
HEAD is now at fa7fd8d delete test2

注： --hard 表示放弃所有本地改动

#再次查看log
bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git log
commit fa7fd8d49f3789d39aa3cc52cd81e09e6d061719
Author: 小朋 <xiaopeng.bxp@****.com>
Date:   Tue Dec 31 13:29:45 2013 +0800


    delete test2


commit 746f92258e2bc65c46f77f37315f577091192885
Author: 小朋 <xiaopeng.bxp@****.com>
Date:   Tue Dec 31 13:22:07 2013 +0800


    test git commit -a


commit e301c4e185b0937d1ce9484ea86ab401e95c976c
Author: 小朋 <xiaopeng.bxp@****.com>
Date:   Tue Dec 31 13:14:42 2013 +0800


    just test 

………..

回退到指定的版本 git reset --hard <哈希值>

bixiaopeng@bixiaopengtekiMacBook-Pro wirelessqa$ git reset --hard 746f92258e2bc65c46f77f37315f577091192885
HEAD is now at 746f922 test git commit -a 

12.6
撤消未跟踪文件 git clean -dxf

「举个例子」

清除所有未跟踪文件，包括纳入ignored的文件。如果要保留ignored的文件修改，使用参数-df

＃清除所有未跟踪文件，包括纳入ignored的文件
bixiaopeng@bixiaopeng-To-be-filled-by-O-E-M:~/workspace2/spark$ git clean -dxf
正删除 .idea/
正删除 .package.sh.swp
正删除 assets/sparklog/
正删除 backup-config/AndroidManifest.xml
正删除 backup-config/channel_config.xml
正删除 backup-res/assets/
正删除 backup-res/res/
正删除 debug
正删除 package/spark_2.4_L95_91zhuomian.apk
正删除 res/values/channel_config.xmlg
正删除 target/
正删除 xiamimusic.iml
＃再查看一下未跟踪的文件已经被撤消了
bixiaopeng@bixiaopeng-To-be-filled-by-O-E-M:~/workspace2/spark$ git status
# 位于分支 test
# 尚未暂存以备提交的变更：
# （使用 "git add <file>..." 更新要提交的内容）
# （使用 "git checkout -- <file>..." 丢弃工作区的改动）
#
# 修改： pom.xml
#
修改尚未加入提交（使用 "git add" 和/或 "git commit -a"）｀