标签:txt href refers 状态 bsp hang strong sof set
撤销修改分为两种情况:
一种是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;
一种是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。
总之,就是让这个文件回到最近一次git commit或git add时的状态。
情况一:工作区修改还未放到暂存区
添加一条my stu...........
$ 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.
查看状态no changes...........暂存区是干净的
$ 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会告诉你,git checkout -- file可以丢弃工作区的修改:
$ git checkout -- readme.txt
现在,看看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.
文件复原了!!
情况二:修改后放到暂存区还没提交
$ cat readme.txtGit 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.txt
查看状态还未提交
$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: readme.txt#
Git同样告诉我们,用命令git 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.txt
git 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#
no changes added to commit (use "git add" and/or "git commit -a")
丢弃工作区的修改吗?
$ git checkout -- readme.txt
$ git status# On branch master
nothing to commit (working directory clean)
小结
场景1:当你改乱了工作区某个文件的内容,想直接丢弃工作区的修改时,用命令git checkout -- file。
场景2:当你不但改乱了工作区某个文件的内容,还添加到了暂存区时,想丢弃修改,分两步,第一步用命令git reset HEAD file,就回到了场景1,第二步按场景1操作。
场景3:已经提交了不合适的修改到版本库时,想要撤销本次提交,参考版本回退一节,不过前提是没有推送到远程库。
标签:txt href refers 状态 bsp hang strong sof set
原文地址:http://www.cnblogs.com/livelihood/p/6538732.html