git中的撤销操作

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修改最后一次提交的信息

有的时候我们提交commit后，不想提交了，想取消。或者想修改最后一次提交的信息

比如我们的提交历史如下：

hui.qian@HUIQIANPC /e/testerhome/AndroidTestScrpits (dev)$ git logcommit 453724d4c64351885a8b96c929aa3c5427606ec9Author: unknown <hui.qian@HuiQianPC.spreadtrum.com>Date:   Tue Mar 3 15:00:55 2015 +0800    0303commit 0be21561767575dabe4902e427e47100bbcfded2Author: unknown <hui.qian@HuiQianPC.spreadtrum.com>Date:   Tue Mar 3 14:50:37 2015 +0800    first commitcommit 557d1095b610b0cbb26d679528af551a6bcdb10fAuthor: unknown <hui.qian@HuiQianPC.spreadtrum.com>Date:   Tue Mar 3 14:24:29 2015 +0800

现在我看第一个commit的信息不爽怎么办？git为我们提供了git commit –amend命令

这里写图片描述

我们将0303改为2015.3.3，保持退出后，输出如下信息:

$ git commit --amend[dev e0793fc] 20150303 Committer: unknown <hui.qian@HuiQianPC.spreadtrum.com>Your name and email address were configured automatically basedon your username and hostname. Please check that they are accurate.You can suppress this message by setting them explicitly:    git config --global user.name "Your Name"    git config --global user.email you@example.comAfter doing this, you may fix the identity used for this commit with:    git commit --amend --reset-author 1 file changed, 1 insertion(+)

此时再执行git log命令会发现如下信息:

commit e0793fce0e83ba7e64aa60acc1b26d2ccd1c0f1eAuthor: unknown <hui.qian@HuiQianPC.spreadtrum.com>Date:   Tue Mar 3 15:00:55 2015 +0800    20150303commit 0be21561767575dabe4902e427e47100bbcfded2Author: unknown <hui.qian@HuiQianPC.spreadtrum.com>Date:   Tue Mar 3 14:50:37 2015 +0800    first commit

说明修改成功了。

取消最后一次add的文件

$ git statusOn branch devChanges 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:   README.md        modified:   shell/screenshot.shno changes added to commit (use "git add" and/or "git commit -a")hui.qian@HUIQIANPC /e/testerhome/AndroidTestScrpits (dev)$ git add .hui.qian@HUIQIANPC /e/testerhome/AndroidTestScrpits (dev)$ git statusOn branch devChanges to be committed:  (use "git reset HEAD <file>..." to unstage)        modified:   README.md        modified:   shell/screenshot.sh

例如上面的信息，我们将2个文件的修改一起暂存了。但是我发现
shell/screenshot.sh并不需要暂存，我想取消怎么办，很简单，可以看到上面的提示信息就有这个命令git reset HEAD 。我们来试试

$ git reset HEAD shell/screenshot.shUnstaged changes after reset:M       shell/screenshot.shhui.qian@HUIQIANPC /e/testerhome/AndroidTestScrpits (dev)$ git statusOn branch devChanges to be committed:  (use "git reset HEAD <file>..." to unstage)        modified:   README.mdChanges 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:   shell/screenshot.sh

我们成功的把shell/screenshot.sh从准备提交列表(Changes to be committed)赶到了没有暂存文件列表(Changes not staged for commit)中

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