$ 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 status命令可以让我们时刻掌握仓库当前的状态,上面的命令输出告诉我们,readme.txt被修改过了,但还没有准备提交的修改。
$ git diff readme.txt
diff --git a/readme.txt b/readme.txt
index 46d49bf..9247db6 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,2 +1,2 @@
Git is a version control system.
+Git is free software.
+Git is a distributed version control system.
Git is free software.git diff顾名思义就是查看difference,显示的格式正是Unix通用的diff格式,可以从上面的命令输出看到,我们在添加两行。
$ git add readme.txt$ git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
modified: readme.txtgit status告诉我们,将要被提交的修改包括readme.txt。
$ git commit -m "添加了两句话"
[master e475afc] 添加了两句话
1 file changed, 2 insertion(+)$ git status
On branch master
nothing to commit, working tree cleanGit告诉我们当前没有需要提交的修改,而且,工作目录是干净(working tree clean)的。