
readme.txt中添加了一行:$ cat readme.txt
Git is a distributed version control system.
Git is free software distributed under the GPL.
Git has a mutable index called stage.
Git tracks changes of files.
My stupid boss still prefers SVN.stupid boss可能会让你丢掉这个月的奖金!
git status查看一下:
$ git status
On branch master
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: readme.txt
no changes added to commit (use "git add" and/or "git commit -a")git checkout -- file可以丢弃工作区的修改:$ git checkout -- readme.txt命令git checkout -- readme.txt意思就是,把readme.txt文件在工作区的修改全部撤销,这里有两种情况:
readme.txt自修改后还没有被放到暂存区,现在,撤销修改就回到和版本库一模一样的状态;
readme.txt已经添加到暂存区后,又作了修改,现在,撤销修改就回到添加到暂存区后的状态。
git commit或git add时的状态。
readme.txt的文件内容:
$ cat readme.txt
Git is a distributed version control system.
Git is free software distributed under the GPL.
Git has a mutable index called stage.
Git tracks changes of files.git checkout -- file命令中的–很重要,没有--,就变成了“切换到另一个分支”的命令,我们在后面的分支管理中会再次遇到git checkout命令。
git add到暂存区了:
$ cat readme.txt
Git is a distributed version control system.
Git is free software distributed under the GPL.
Git has a mutable index called stage.
Git tracks changes of files.
My stupid boss still prefers SVN.$ git add readme.txtcommit之前,你发现了这个问题。用git status查看一下,修改只是添加到了暂存区,还没有提交:$ git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
modified: readme.txtgit reset HEAD <file>可以把暂存区的修改撤销掉(unstage),重新放回工作区:$ git reset HEAD readme.txt
Unstaged changes after reset:
M readme.txtgit reset命令既可以回退版本,也可以把暂存区的修改回退到工作区。当我们用HEAD时,表示最新的版本。
git status查看一下,现在暂存区是干净的,工作区有修改:
$ git status
On branch master
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: readme.txt$ git checkout -- readme.txt
$ git status
On branch master
nothing to commit, working tree clean整个世界终于清静了!
git checkout -- file。
git reset HEAD <file>,就回到了场景1,第二步按场景1操作。