Git管理修改

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1. 修改readme.txt

git is a version control system.git is free software under the GPL.git tracks changes.

2. 添加到暂存区

$ git add readme.txt$ git statusOn branch masterChanges to be committed:  (use "git reset HEAD <file>..." to unstage)        modified:   readme.txt

3. 修改readme.txt

git is a version control system.git is free software under the GPL.git tracks changes of files.

4. 提交至版本库

$ git commit -m "tracks change"[master 1161148] tracks change 1 file changed, 2 insertions(+), 1 deletion(-)

5. 查看状态

$ git statusOn branch masterChanges 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.txtno changes added to commit (use "git add" and/or "git commit -a")

发现第二次的修改并没有被提交,
操作过程：第一次修改 -> git add -> 第二次修改 -> git commit
Git管理的是修改，用git add命令后，在工作区的第一次修改被放入暂存区，准备提交，但是，在工作区的第二次修改并没有放入暂存区，所以，git commit只负责把暂存区的修改提交了，也就是第一次的修改被提交了，第二次的修改不会被提交。/

6. 查看工作区和版本库的区别

$ git diff HEAD -- readme.txtdiff --git a/readme.txt b/readme.txtindex 5cedd61..c05c601 100644--- a/readme.txt+++ b/readme.txt@@ -1,3 +1,3 @@ git is a version control system. git is free software under the GPL.-git tracks changes.\ No newline at end of file+git tracks changes of files.\ No newline at end of file

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